Release Notes - Testnet#

Sirius Testnet#

Note

Prior to Sirius, the nodes enforced that a transaction could not be deployed until 2 hours before its expiry date. With Sirius, node validation of transactions has been improved and the 2 hour window has been removed.

October 5, 2022

Concordium Client 4.2.0#

  • Fix handling of --no-confirm in contract init, contract update, module deploy, and register data transactions. This flag is now respected.

  • Add support for import of keys from Concordium Wallet for Chrome.

  • Fix some inconsistencies in the display format of CCD amounts.

September 29, 2022

Concordium Node 4.4.4#

Concordium Node 4.4.4 contains performance improvements and bug fixes.

  • Smart contract state is no longer cached on startup and is not cached after finalization. This reduces the node’s memory use and startup time.

  • Smart contract modules are no longer retained in memory. Module artifacts are loaded as needed during contract execution. Metadata is cached for a limited number of smart contract modules. By default, the cache will retain metadata for at most 1000 smart contract modules, and this is configurable via the --modules-cache-size command line argument or by using the CONCORDIUM_NODE_CONSENSUS_MODULES_CACHE_SIZE environment variable.

  • Speed up and reduce memory overhead during protocol updates. Overhead in memory use during protocol updates should now be less than 20%, and time to process a protocol update should be around 1/3 of the previous release.

  • The node now validates blocks more eagerly and does not relay blocks it cannot fit into the tree, i.e., pending blocks.

  • The --download-blocks-from option now takes the URL to the catchup _index file_, permitting to only download and import catchup files containing blocks not already present in the database.

  • Partial node database recovery. The node is now able to recover from the most common causes of its database corruption.

  • Fix typo in environment variable CONCORDIUM_NODE_PROMETHEUS_LISTEN_ADDRESSS (remove trailing S).

  • Fix a bug in Ctrl-C signal handling where a node would fail to stop if interrupted early on in the startup if out-of-band catchup was enabled.

September 26, 2022

Concordium Wallet for Android#

Concordium introduces a new wallet for Android mobile devices: the Concordium Wallet for Android. The Concordium Wallet for Android offers all of the same functionality you know from Concordium Legacy Wallet, such as sending and receiving CCDs, delegation, baking, and so on. But the Concordium Wallet for Android uses a secret recovery phrase to generate your private keys, simplifying any restoration of an account should you lose access to the phone/app. This version also supports easy portability of accounts between this and the soon to be released Concordium Wallet for Chrome. You can read about Concordium Wallet for Android and the differences between it and Concordium Legacy Wallet in the FAQ.

In connection with this new wallet, the Android mobile wallet previously known as Concordium Mobile Wallet has been renamed Concordium Legacy Wallet.

Concordium Legacy Wallet (previously Concordium Mobile Wallet) for Android#

The Concordium Mobile Wallet has been renamed to Concordium Legacy Wallet with the release of the Concordium Wallet for Android. If you are creating your first identity, Concordium recommends downloading and using Concordium Wallet for Android.

August 29, 2022

Concordium Node 4.3.1#

Concordium Node 4.3.1 introduces a number of performance improvements. The effects of these are that the node on mainnet at the current load will use around 1/4 the memory of the 4.2.3 node. Startup can be up to 50% faster, although exact improvements will be platform dependent.

  • Account records are no longer constantly retained in memory. Instead, a limited number are retained in a cache. The number of cached accounts defaults to 10000 and can be configured by the --accounts-cache-size command line argument or the CONCORDIUM_NODE_CONSENSUS_ACCOUNTS_CACHE_SIZE environment variable.

  • Reduce startup time and memory use further by reducing the amount of block data retained in memory. In particular finalized blocks are no longer stored in memory.

  • Optimize node data structures related to accounts. This reduces node memory use and improves performance.

  • The gRPC API now reports correctly when the sender of a transaction did not have enough funds to cover the transaction costs.

  • Remove obsolete and unused option --max-expiry-duration.

  • Remove transaction logging functionality from the node. It is replaced by an external transaction logger service. As a consequence the transaction-outcome-logging family of command line options are removed from the node.

August 24, 20222

Concordium Client 4.1.0#

Fix bug in contract schema parsing caused by endiannes confusion.

Add support for smart contract schema V2. V2 schemas offer the same options as V1, but can also include a schema for the error type. This enables concordium-client to interact with contracts built using concordium-std version 4.

Cargo concordium 2.1.0#

Use schemas for error values when simulating contracts. In particular support building and testing contracts with concordium-std version 4.

August 24, 20222

Concordium Client 4.1.0#

  • Fix bug in contract schema parsing caused by endiannes confusion.

  • Add support for smart contract schema V2. V2 schemas offer the same options as V1, but can also include a schema for the error type. This enables concordium-client to interact with contracts built using concordium-std version 4.

Cargo concordium 2.1.0#

Use schemas for error values when simulating contracts. In particular support building and testing contracts with concordium-std version 4.

August 4, 2022

Concordium Client 4.0.4#

The concordium-client has been updated to better support the new smart contract v1 schema.

Cargo concordium 2.0.2#

Cargo concordium has also been updated to better support the new smart contract v1 schema.

Concordium Node 4.2.3 for Docker#

Some improvements have been made to the Docker node version. The new Docker images (one for Mainnet and one for Testnet) are designed for use with docker-compose or a similar driver. The node also requires a database which must be stored on the host system so that it persists when the Docker container is stopped.

It is not mandatory but strongly recommended for Linux node runners to migrate to the new Docker distribution. The old Docker images will be deprecated and future node versions from 4.3 and upwards will only be provided in the new distribution.

Concordium Desktop Wallet 1.5.0#

The Concordium Desktop Wallet now supports the Ledger Nano S Plus hardware wallet.

Fixed an issue on macOS that prevented automatic updates from installing after successfully being downloaded and verified. This means that macOS users have to download this release manually.

August 2, 2022

Concordium Node 4.2.3#

Concordium Node 4.2.3 fixes a critical security vulnerability present in all previous 4.* node versions. All node runners must upgrade as soon as possible.

The security advisory detailing the issue and the patch will be released on August 15th.

June 30, 2022

Concordium Mobile Wallet for iOS v3.0.0(53)#

Concordium Mobile Wallet for iOS 3.0.0 contains the long-awaited and highly anticipated delegation and baking functionality.

You can now delegate stake to a baker pool or passive delegation from Mobile Wallet, update delegation, or stop delegation.

If you have enough stake to become a baker, you can also do that from Mobile Wallet. Additionally, you can open a baker pool, update baker stake and settings, update your baker keys, or stop baking.

June 27, 2022

Concordium Mobile Wallet for Android v3.0.0(100)#

Concordium Mobile Wallet for Androind 3.0.0 contains the long-awaited and highly anticipated delegation and baking functionality.

You can now delegate stake to a baker pool or passive delegation from Mobile Wallet, update delegation, or stop delegation.

If you have enough stake to become a baker, you can also do that from Mobile Wallet. Additionally, you can open a baker pool, update baker stake and settings, update your baker keys, or stop baking.

This functionality will be available for iOS shortly.

Concordium Node 4.2.1#

Concordium Node 4.2.1 is a maintenance release, bringing performance improvements and bugfixes. The highlights are:

  • A significant decrease in node startup time. The exact improvements are platform dependent, but startup should be at least 6 times faster on mainnet.

  • A significant decrease in node memory use. On mainnet, a 4.2.1 node should use less than 50% of memory compared to 4.1.1.

  • Reduced CPU use of passive nodes in Windows, Mac, and Linux distributions.

Sirius Testnet reset#

June 21, 2022

Concordium Desktop Wallet v1.4.2#

Concordium Desktop Wallet 1.4.2 is a hotfix release specifically for macOS containing the following fixes:

  • Fixed an issue on macOS where an error popup would show after closing the main application window and opening it again.

  • Fixed an issue on macOS where identity creation was not possible after closing the main application window and opening it again.

June 13, 2022

Sirius testnet has been reset on June 13, 2022. For information about the implications of this, see Sirius Testnet reset.

Concordium Node 4.1.1#

A new version of Concordium Node has been released to fix several critical errors related to delegation.

Concordium Desktop Wallet v1.4.1#

  • When choosing a delegation target a link is now available that forwards the user to the delegation documentation website.

  • Fixed an issue that made it impossible to create a transaction to do passive delegation.

  • Fixed an issue that caused the wallet to crash when inspecting identities with missing date attributes.

Sirius Testnet#

May 23, 2022

Concordium Desktop Wallet v1.4.0#

Concordium Desktop Wallet 1.4.0 contains functionality to support delegation to baker pools or passive delegation. In addition, the Desktop Wallet has an improved user interface.

The Concordium Ledger app 3.0.1 is also released. With the Sirius release, Ledger firmware version 2.0.0 is no longer supported.

May 16, 2022

Concordium Node 4.0.11#

Concordium Node 4.0.11 introduces new functionality to support delegation to baker pools or passive delegation, and a new version Smart Contracts.

V1 smart contracts includes the following key features:

  • Unlimited contract state size

  • Synchronous contract calls

  • Fallback entrypoints

  • An increased smart contract module size limit of 512kB

  • A number of cryptographic primitives

Other improvements in this version include:

  • The SendTransaction function exposed via the gRPC interface now provides the caller with detailed error messages.

  • Support for wire-protocol version 0 is dropped, meaning that the node cannot connect to peers that do not support wire-protocol version 1, which is supported since version 1.1.0.

  • The macOS installer has been improved so it no longer overwrites the service files when reinstalling.

  • When using the Mac installer users now can leave one (but not both) of the net configurations empty when they don’t want to configure a node for it. On the initial installation, leaving a net configuration empty means that the start/stop app shortcuts and the application support folder for that net won’t be installed.

  • Consensus queries have been made more robust by validating input more extensively. This affects all queries whose input was a block or transaction hash. These queries now return an InvalidArgument error.

  • The maximum number of retries for Node Collector has been removed so it will keep querying indefinitely.

  • Nodes can now be stopped during out of band catchup by using the signals SIGINT and SIGTERM.

  • The GetAccountInfo endpoint supports querying the account via the account index.

  • Baker pools and stake delegation are implemented for the P4 protocol version.

  • The new gRPC endpoint GetBakerList retrieves a JSON list of the baker IDs of the bakers registered in a known block. It returns null for an unknown block.

  • The new gRPC endpoint GetPoolStatus retrieves a status record for a baker pool, or for the set of passive delegators.

  • The bakerStakeThreshold level-2 keys are renamed to poolParameters keys; two additional access structures are defined: cooldownParameters and timeParameters.

  • Smart contract modules are cached on startup from the existing state to improve smart contract execution.

Concordium Client 4.0.3#

Concordium Client 4.0.3 supports version 1 Smart Contracts with the following changes.

  • A contract invoke command has been added for simulating contracts locally on the node.

  • Module deploy now expects modules with a version prefix. This prefix is added automatically when building with cargo-concordium version >= 2. The flag --contract-version has been added to support modules without the version prefix.

  • The contract update command now uses --entrypoint to specify the function to invoke. This is renamed from the previous --func.

  • When calling contract update or contract invoke with a non-existent entrypoint the fallback entrypoint is called if one is specified in the contract.

Concordium Client 4.0.3 also supports delegation to baker pools or passive delegation, and commands have been added to open baker pools.

  • The commands delegator add, delegator configure and delegator remove have been added. Commands to support the baker opening a baker pool have also been added, including baker configure, baker update-url and baker update-delegation-status.

  • The existing commands baker add, baker remove, baker set-key, baker update-restake and baker update-stake have been updated so that in Protocol version < 4, they generate the former P3 transaction, and in Protocol version 4, they generate the relevant configure baker transaction.

  • Support has been added for the raw queries GetPoolStatus and GetBakerList.

  • The subcommand consensus show-chain-parameters has been added to show the chain parameters. This subcommand shows useful information, such as the amount needed to become a baker, bounding caps for baker pools, commission percentages for delegation, exchange rate parameters, and more.

Open Testnet v7 Update 1#

April 21, 2022

Concordium Node v3.0.2#

  • Fixed a security vulnerability in the network layer that could be used to crash the node, causing a denial of service.

March 22, 2022

Concordium Mobile Wallet for Android v2.0.0(75)#

Version 2 of the Concordium Mobile Wallet simplifies the UI, bringing the most common interactions forward.

The simplified UI involves:

  • Redesigned account cards with Send, Receive and More options.

  • Updated simple and shielded transaction flows:

    • It is now possible to paste recipient addresses directly, without having to add them to the address book first.

    • A “Send all” button has been added.

  • The shielded balance is now found behind a setting on each account. Enabling the setting will show a brief introduction of the shielded balance concept.

  • The introduction flow shown when starting the app for the first time now includes more information on the Concordium identity and initial accounts.

March 21, 2022

Concordium Mobile Wallet for iOS v2.0.0(38)#

Version 2 of the Concordium Mobile Wallet simplifies the UI, bringing the most common interactions forward.

The simplified UI involves:

  • Redesigned account cards with Send, Receive and More options.

  • Updated simple and shielded transaction flows:

    • It is now possible to paste recipient addresses directly, without having to add them to the address book first.

    • A “Send all” button has been added.

  • The shielded balance is now found behind a setting on each account. Enabling the setting will show a brief introduction of the shielded balance concept.

  • The introduction flow shown when starting the app for the first time now includes more information on the Concordium identity and initial accounts.

February 10, 2022

Concordium Mobile Wallet for iOS v1.3(34)#

  • Fixed a bug related to import of backup files.

February 1, 2022

Concordium Mobile Wallet for iOS v1.2(33)#

  • Changed name of export file to concordium-backup.concordiumwallet.

  • Added prompts and dialogs to remind users to back up.

January 25, 2022

Concordium Mobile Wallet for Android v1.2.6#

  • Changed name of export file to concordium-backup.concordiumwallet.

  • Added prompts and dialogs to remind users to back up.

January 10, 2022

Concordium Desktop Wallet v1.3.1#

  • Fixed issue that caused the wallet to crash when inspecting identities with missing date attributes.

  • Fixed identity issuance with DTS.

January 3, 2022

Concordium Node v3.0.1#

  • Fixed a starvation bug in some cases of parallel node queries.

December 17, 2021

Concordium Desktop Wallet v1.3.0#

  • Added a GTU drop option for testnet.

  • In the case of a failed identity, the error details received from the identity provider are now displayed to the user.

  • Added UI flows for baker transactions for single signer accounts.

  • Auxiliary data in an Update Protocol transaction is now optional.

  • Updated terms and conditions.

  • Updated UI to reflect the rename of GTU to CCD, meaning anywhere tokens were referred to as GTU, it now says CCD. The GTU icon has also been replaced with the icon representing CCD.

  • Datetimes are now selected with a date picker from a calendar.

  • Finalized transactions are no longer stored in the local database, but are instead always fetched from the wallet proxy when needed.

  • Failed database migrations errors are now shown correctly to the user.

Concordium Mobile Wallet for Android v1.0.22#

  • Changed naming from GTU to CCD.

  • Various bug fixes.

December 13, 2021

Concordium Ledger App v2.0.3#

  • Supports Ledger Nano S firmware version 2.1.0.

  • Removed references to GTU in the UI.

  • An acceptance step has been added to the export of private key seeds.

December 7, 2021

Concordium Mobile Wallet for iOS v1.1(27)#

  • Changed GTU/Ǥ naming to CCD/Ͼ.

  • Support for the new memo functionality in simple, shielded, and scheduled transfers:

    • It is now possible to add memos to simple and shielded transfers.

    • Memos can also be displayed for transfers with a release schedule.

  • Various improvements of the identity issuance flow, account creation and related support options.

    • Added a new dialogue shown when an identity request fails. There is now an option to contact the identity provider directly via an auto-filled e-mail, containing an issuance reference for better personal support, as well as system information of the user for better debugging.

    • Added a small dialogue to remind the user to check for a response on new identity requests.

    • Users will now be notified on successful creation of new accounts inside the app.

    • Various back-end improvements by the identity provider to make their service more robust.

    • Various improvements to make the identity issuance and account creation flow more robust.

  • Various bug fixes.

  • Various smaller textual updates.

Open Testnet v7#

November 29th 2021

Concordrium Node v3.0.0#

  • Introduced support for account aliases via protocol P3. Accounts can be queried in GetAccountInfo, GetAccountNonFinalizedTransactions, GetNextAccountNonce by any alias.

  • GetAccountInfo object now has an additional field accountAddress that contains the canonical address of the account.

  • Fixed a bug due to incorrect use of LMDB database environments, where a node would crash if queried at specific times.

  • Faster state queries by avoiding locking the block state file when reading.

  • Fixed a bug caused by shutting down RPC before the node, which caused the node to crash when attempting a graceful shutdown while processing RPC requests.

  • The node now drops all connections on an unrecognized protocol update and refuses to accept new transactions.

Concordium-client v3.0.4#

  • Credentials revealing the newly introduced attribute LEI can be deployed.

  • Renamed GTU token to CCD.

  • Renamed send-gtu, send-gtu-scheduled and send-gtu-encrypted to send, send-scheduled and send-shielded.

  • Renamed account encrypt/decrypt to account shield/unshield.

  • Added command for generating aliases of an address.

  • Now shows line breaks, tabs etc. in memo transfers (when it’s CBOR encoded string), instead of escaping them as \n, \t etc.

  • Now displays memo as JSON in a more readable way.

  • Added time units to slot duration and epoch duration in consensus status.

  • Updated the register-data command to register data as CBOR encoded strings or JSON using the new flags --string and --json. Raw data can still be registered using the new flag --raw.

  • Added raw DisconnectPeer, a counterpart to the existing raw ConnectPeer.

  • Now warning the user when trying to add a baker with a stake below the minimum threshold.

  • Improved how contract schemas are shown as JSON:

    • Now displays complex types in arrays correctly.

    • Use angle brackets to indicate placeholders, e.g. "<UInt16>" instead of "UInt16".

  • Improved module inspect:

    • Now shows all contracts from a module regardless of whether a schema is included or not.

    • Now shows the receive methods for contracts as well.

  • Now allows sending transactions where the sender is an account alias.

Open Testnet v6 Update 4#

November 16th, 2021

Concordium Mobile Wallet for Android (v. 1.0.16)#

  • Support for the new memo functionality in simple, shielded, and scheduled transfers:

    • It is now possible to add memos to simple and shielded transactions.

    • Memos can also be displayed for transfers with release schedule.

  • Various improvements of the identity issuance flow, account creation and related support options:

    • Added a new dialogue, which is shown when an identity request fails. There is now an option to contact the identity provider directly via an autofilled e-mail, containing an issuance reference for better personal support as well as system information of the user for better debugging.

    • Added a small dialogue to remind user to check for response on new identity requests.

    • User will now be notified on successful creation of new accounts inside the app.

    • Various back-end improvements by the identity provider to make their service more robust.

  • Various bug fixes.

  • Various smaller textual updates.

  • Mainnet and Testnet versions of the Concordium Mobile Wallet for Android can now both be installed at the same time.

The new version of Concordium Mobile Wallet for iOS is coming soon#

Open Testnet v6 Update 3#

Concordium Desktop Wallet v1.2.0#

Concordium Desktop Wallet v1.2.0

  • Added memo functionality to simple, shielded and scheduled transfers.

  • Automatic updates now supported.

  • Added option to recover lost accounts from Ledger devices.

  • The desktop wallet now shows connected node status in side bar.

  • Added an option to change between two account views.

  • Transaction log can now handle more than 100 transactions and filter functionality has been expanded.

  • Failed identities now show more information, including how to contact support.

  • Apple M1 Macs are now supported through Rosetta.

  • It is now possible to view an account address QR-code in “fullscreen” mode.

  • It is now possible to rename accounts and identities.

  • Added an option to add an address book entry while creating a transfer transaction.

  • Added an introductory screen to set up a node connection for first time users.

  • It is now possible to remove a failed identity.

  • The accounts page has been updated to make it clearer that multi credential accounts are not able to use shielded transactions.

  • Transactions in the ‘Transfers’ list in the account view are now grouped by dates.

  • Various smaller UI updates.

  • Various smaller bug fixes.

  • The desktop wallet is now open source.

Concordium Ledger App v2.0.1#

  • Improved state validation to deny instruction changes in multi command transactions.

  • Support building for the Ledger Nano X.

  • Simplified the UI by updating terminology and stopped displaying details that cannot feasibly be verified by a user.

  • Export of private key seeds has been changed so that either the PRF key can be exported alone, or the PRF key and the IdCredSec are exported in a single command.

  • Added support for transactions with memos.

  • Support for the “Add identity provider” update.

  • Support for the “Add anonymity revoker” update.

  • Improved pagination of account addresses and hexadecimal strings, so that pages are split evenly and consistently.

  • Fixed an issue in the add baker UI, where a response could be sent before signing or declining.

Open Testnet v6 Update 2#

October 6, 2021

The Concordium node release v1.1.3 is a bugfix release.

Open Testnet v6 Update 1#

September 17, 2021

The Concordium node release v1.1.2 is a bugfix release.

Open Testnet v6#

September 15, 2021

Concordium Node v1.1.1#

The Concordium node release v1.1.1 implements a protocol update to add memo functionality for simple, shielded and scheduled transfers. This means that node runners must upgrade their nodes before the new protocol takes effect on testnet on September 22, 2021. Old nodes will stop processing new blocks at that point. See protocol updates for more details.

  • Added memo functionality for transactions to Protocol

  • Windows support for running a node

  • Mac support for running a node

  • Mac ARM M1 support for running a node

Concordium Client v1.1.1#

Concordium Client v1.1.1

  • Added memo functionality for transactions

Open Testnet v5 Update 4#

July 28, 2021

Concordium Desktop Wallet v1.1.6#

  • Fixed an issue where identity creation would fail consistently making it impossible to create new identities.

Open Testnet v5 Update 3#

July 27, 2021

Concordium Desktop Wallet v1.1.5 for Testnet#

  • General improvements to the user interface, in particular for multi signature transaction flows.

  • Change of wallet password now enforces the same length restriction as when initially set.

  • Wallet exports now contain the genesis hash to prevent the import of a wallet from testnet to a mainnet wallet.

  • Improved messages when waiting for a Ledger device to be connected.

  • Transaction status is now included in an account report.

  • Fixed an issue where e.g. a loss of connection could result in a failed identity when it should not.

  • Security improvements. Node integration was available to the Electron renderer threads which is considered unsafe. This has now been disabled.

  • Added foundation feature for importing and creating multi signature transactions in bulk.

  • A number of bug fixes.

Concordium Ledger App v1.0.2

  • Scheduled transfer release times are now shown as human readable UTC date time strings.

  • Fixed a UI bug in remove baker transaction.

Open Testnet v5 Update 2#

Concordium Desktop Wallet v1.1.3 for Testnet.

The Desktop Wallet is available on Testnet for Windows, macOS, and Linux including:

  • All features released in v1.0.2 for Mainnet.

  • Transaction status in account reports.

  • Various bug fixes.

  • Foundation feature: Added support for bulk import of proposals.

Open Testnet v5 Update 1#

June 24th, 2021

Concordium Mobile Wallet for iOS v1.0.5

  • Added feature enabling change of passcode and biometrics.

  • Updates to Account page UI for easier shielding/unshielding transactions.

  • Added option to filter rewards in transaction log.

  • Added About page.

  • Improved security.

  • Various bug fixes and robustness improvements.

  • Code is now open source.

Concordium Mobile Wallet for Android v1.0.7(46)

  • Added feature enabling change of passcode and biometrics.

  • Updates to Account page UI for easier shielding/unshielding transactions.

  • Added option to filter rewards in transaction log.

  • Added About page.

  • Improved security.

  • Various bug fixes and robustness improvements.

  • Code is now open source.

Open Testnet v5#

May 12th, 2021

Updated Open Testnet to match Mainnet features including:

Proof of Stake

The Concordium Blockchain uses a proof of stake mechanism to ensure resource-efficient operation of the network.

Two Layer Consensus Protocol

Nakamoto-Style Consensus Bakers participate in a form of lottery to win the right to append blocks to the chain.

Finality Layer Concordium finality layer dynamically ‘checkpoints’ the blockchain using Byzantine agreement to identify and mark common blocks in the chains of honest users as final.

Built in IDLayer

Account creation is based on a validated identity, but at the same time it provides transactional privacy for users with a mechanism that allows accountability to local regulatory authorities.

Transactional privacy is further enhanced by support for shielded transfers.

Smart Contracts

Concordium blockchain has native support for smart contracts on-chain with our core on-chain language WebAssembly (Wasm), a portable well-defined assembly-like language.

Rust is the first off-chain high level smart contract language.

Tokenomics and On-chain Incentivization

The Concordium blockchain comprises a set of transactions and economic roles that interact within the economy. An economic role, such as a baker or account holder, is represented by an account on the Concordium platform.

The flow of CCD between accounts via transactions creates an economy that is designed to incentivize participation in the network and counter dishonest behaviour. It is the objective of the Concordium Foundation to guide the creation of a sustainable economy that rewards participants for their efforts in developing the network.

Concordium Node

The Concordium node software is available for Linux and available in two different packages:

  • A distribution package, which provides wrappers for setting up the node in a Docker image.

  • A Debian package built for Ubuntu 20.04. This package allows for greater customization of the node set up.

Open Testnet v4 Update 1#

January 14th, 2020

  • Fixed an issue in the node, where a parameter update transaction could cause the node to crash on restart.

Open Testnet v4#

January 13th, 2020

Smart contracts:

  • Smart contracts support on chain

  • Rust supported as off-chain Smart Contract language

  • Concordium-std library added for developing smart contracts in Rust.

  • Cargo-concordium tool for building and testing smart contracts off-chain

  • Documentation for smart contracts added to developer documentation

  • Smart Contract transactions added to concordium-client

Tokenomics (to match tokenomics model):

  • Rewards for baking and finalization changed

  • Minting changed

  • Extended the list of adjustable chain parameters

  • Updated network dashboard block explorer to include new info

  • Amount lock-up transaction with schedule added

  • Staking changed so staked amount is locked

  • Mobile app updated to show staking and amount lockup schedules

  • Delegation removed

ID layer:

  • Initial account creation added to ID provider process

  • Mobile app updated to support initial account creation

Open Testnet v3 update 2#

October 16th, 2020

A new Mac version is released after fixing an issue with adding a baker on the dashboard. The downloads page has been updated accordingly. Please download the latest Mac release, then stop your node, reset your data, and restart your node.

Open Testnet v3 update 1#

October 8th, 2020

New mobile wallets are released after some bug fixes on both iOS and Android. The released versions are ConcordiumID version 0.1.52 for iOS and version 0.5.24 for Android. The downloads page has been updated accordingly. The node software is unaffected by this update.

Open Testnet v3#

October 6th, 2020.

  • Chain visualization: The connection of blocks has been made more stable to ensure that it progresses smoothly.

  • iOS Concordium ID app available.

  • Added import to app. It is now possible to import a file that has previously been exported. This enables moving identities and accounts to other mobile devices and restoring from backup.

  • µCCD. The smallest unit has been changed from 10-4 to 10-6.

  • Bulletproofs. The core blockchain has been updated to support use of bulletproofs.

  • Encrypted(shielded) amounts and transfers: Support for shielded transactions has been added to the core blockchain. Support for sending and receiving shielded amounts are added to the mobile apps and the Concordium client.

  • Anonymity revocation tool available for anonymity revokers.

  • Block storage improvements for storing the chain on nodes.

Open Testnet v2 update 1#

July 2, 2020

An issue was identified in the Concordium ID app for Android. When using an identification document with no expiry date (such as a Swiss driving license) the app will crash upon completion of the ID issuance process. An app update has been issued and is available here (No longer available - See the downloads page for the newest app). The node software is unaffected by this update.

Open Testnet v2#

June 29, 2020

Follow our instructions on how to upgrade to Open Testnet v2 from v1.

The Testnet v2 is the second public release of the Concordium Blockchain. Open Testnet aims at demonstrating the technology behind the Concordium Blockchain. This version is not feature-complete compared to the expected features for the first Mainnet version of the Concordium Blockchain.

This version of the Testnet is running Concordium Node version 0.2.13.

Updates#

  • Concordium ID, an Android mobile app for accessing identities and accounts

  • Identity provider integration in Android mobile app

    • Notabene developer identity issuance flow

    • Notabene identity issuance flow

  • Catch-up time improvements

    • The time needed for new nodes to catch-up has been significantly reduced

    • Restarting nodes can now choose to start from their local database removing the need to do a complete catch-up.

  • Storage requirements improvements

    • Storage of the chain on nodes has been optimized

  • Concordium Node and Client Software improvements. Extended in the following areas:

    • Managing bakers

    • Account delegation

    • Module query

    • Account management

  • Block explorer added to dashboard

  • Node dashboard with support for becoming a baker

  • Improvements to the Network Dashboard

Open Testnet v1#

April 2, 2020

The Testnet v1 is the first public release of the Concordium Blockchain. Open Testnet aims at demonstrating the technology behind the Concordium Blockchain. This version is not feature-complete compared to the expected features for the first Mainnet version of the Concordium Blockchain.

This is the initial version of the Testnet. It will be running Concordium Node version 0.2.4.

Features#

This release contains the following main features:

  • Node software in a dockerized container featuring:

    • Passive node: A node that participates in the Concordium network. It relays messages, provides an API for submitting transactions and inspecting the chain, and processes blocks, but does not produce any blocks on its own.

    • Baker node: Does everything a passive node does, but in addition participates in consensus, producing blocks.

    • Finalizer node: Does everything a baker node does, but in addition participates in the finalization part of our consensus.

    • Concordium Client: A command-line interface to the Concordium Blockchain. Can send transactions and inspect the state of the node and the chain.

    • Tools for interacting with the container

  • A demo Web wallet

    • Creating identities

    • Creating accounts

    • Making transfers

    • Depositing CCD tokens

    • Exporting identities and accounts

  • A demo Identity service

  • A Network Dashboard

Concordium Nodes#

Concordium will be running 19 nodes in Europe for this iteration of the Testnet and an additional node in Hong Kong (all running both baker and finalizer).

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