CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

As a minor extension, we have adopted a slightly different versioning convention for the Mithril distributions (https://mithril.network/doc/adr/3#decision)

Mithril Distribution [XXXX] - UNRELEASED

• UNSTABLE:
  • Support for bytes encoding of the SNARK aggregate signatures in the certificates.
  • Reduced the encoded size of the SNARK proofs by serializing their bytes as CBOR byte strings.

Crate	Version
mithril-aggregator	-
mithril-client	-
mithril-client-cli	-
mithril-client-wasm	-
mithril-common	-
mithril-signer	-
mithril-stm	-

• REMOVED support for Gzip compression/decompression in the Mithril aggregator and client:
  • The aggregator no longer produces or supports Gzip compression for snapshot-related artifacts: immutable files and ancillaries.
  • The Mithril client no longer supports Gzip decompression when downloading snapshot artifacts.
  • Zstandard has been the default compression algorithm for snapshot archives since distribution 2337.0, so this removal should not impact standard operations using current Mithril distributions.
  • Users relying on older Gzip snapshot artifacts or custom aggregators producing Gzip archives must migrate to Zstandard.

Mithril Distribution [2630.0] - 2026-08-03

• REMOVED support for CardanoImmutableFilesFull in Mithril signer and aggregator:

  • Use CardanoDatabase (also known as "cardano database v2") instead, which supports partial database restoration and verification of existing databases.
  • Signers no longer send signatures for this certificate type.
  • Aggregators no longer aggregate signatures for this certificate type.
  • Aggregators will discard signatures of this type received from older signers.

• Moved the repository to the IntersectMBO GitHub organization:

  • The genesis, era and ancillary verification key URLs of the networks.json file now target IntersectMBO.
  • The Docker images of the nodes are now published to the ghcr.io/intersectmbo namespace.
  • The legacy input-output-hk URLs and released images keep working. Refresh any pinned verification key URL or image reference at your next upgrade.

• DMQ node:

  • Implemented new message id format for the DMQ message to follow specification of the CIP-0137.
  • Added support for the DMQ node 0.7.0.0 stable version.
  • Promoted the DMQ node as stable (beta) on release-mainnet and release-preprod networks.
  • Added optional support for ledger peers declared with SRV records (CIP-155).

• Gracefully handle unknown signed entity types across Mithril nodes for improved forward compatibility.

• Allow users to set the network genesis verification key when adding an aggregator in the Mithril Explorer.

• Added a new internal crate mithril-merkle-tree for the implementation of Merkle tree and merkelized map primitives used by Mithril nodes.

• Support for upcoming Cardano node 11.1 in the signer, aggregator and client.

• UNSTABLE:

  • Support for SNARK-friendly rigid protocol message openable in recursive circuit.
  • Support for SNARK-friendly genesis certificate primitives.
  • Support for dual-signature genesis certificate.
  • Support for ancillary prover and verifier data carried on certificates.
  • Support for stopping certificate chain verification early on full-chain certifying certificates.
  • Support for recursive (IVC) SNARK proofs for the certificate chain.

Crate	Version
mithril-aggregator	0.9.18
mithril-client	0.14.17
mithril-client-cli	0.13.20
mithril-client-wasm	0.10.8
mithril-common	0.7.14
mithril-signer	1.1.6
mithril-stm	0.12.0

Mithril Distribution [2617.0] - 2026-04-29

• STABLE: the Mithril signer has reached its first stable version 1.0.0 and is now officially production-ready on the release-mainnet network.

• REMOVED: in Mithril client CLI and WASM:

  • The cardano_db function in the Client struct of the library and its WASM counterpart
  • The --backend v1 flag of the cardano-db command in the CLI; use --backend v2 instead.

• Support for Cardano node 11.0.1 in the signer and the aggregator.

• Support for Cardano node 10.6.2 in the signer and the aggregator.

• Support for Cardano node 10.7.1 in the signer, aggregator and client.

• Update release-mainnet network configuration to SNARK-friendly protocol parameters.

• Support for optional throttling of the Cardano transactions import in the signer and aggregator (enabled by default).

• Upgraded the release process to support release synchronization with the Cardano node releases.

• Implemented statically built Mithril nodes in CI:

  • aggregator, signer, client, and relay are statically built on both GitHub and Hydra CI pipelines using the musl target.
  • Feature updates:
    • rustls is now the default TLS feature for all nodes.
    • num-integer-backend is now the default feature in the mithril-stm library.
  • Memory allocator updates:
    • Jemallocator is now a default dependency (instead of an optional feature) on Linux.
    • Mimalloc is now a default dependency on Linux ARM64.
  • Docker base images have been upgraded to debian:13-slim.
  • glibc is no longer required thanks to statically linked binaries.

• Preliminary support for Cardano blocks and transactions certification:

  • Storage of Cardano blocks in the signer and aggregator cardano_tx SQLite database (⚠️ this will reset the cardano-transaction database and a new full scan of the Cardano chain will be triggered).
  • UNSTABLE:
    • Added new CardanoBlocksTransactions signed entity type for certifying both Cardano blocks and transactions.
    • Support for computing and sending signatures for the CardanoBlocksTransactions signed entity type in the signer.
    • Support for verifying and aggregating signatures for the CardanoBlocksTransactions signed entity type in the aggregator.
    • Support for computing proofs of inclusions for a list of Cardano blocks or transactions hashes in the aggregator; the proof includes extra metadata about the included blocks or transactions.
    • Support for signing with an interval lower than 15 blocks.

• UNSTABLE:

  • Support for DMQ consumer deduplication to prevent processing the same message multiple times upon reconnection to the DMQ server.
  • Support for SNARK-friendly signer registration.
  • Support for SNARK-friendly certificate chain.

Crate	Version
mithril-aggregator	0.8.47
mithril-client	0.14.5
mithril-client-cli	0.13.9
mithril-client-wasm	0.10.4
mithril-common	0.6.67
mithril-signer	1.0.0
mithril-stm	0.10.5

Mithril Distribution [2603.1] - 2026-01-29

• BREAKING changes in Mithril client CLI:

  • Progress bars and spinners are now outputted to stderr instead of stdout.

• DEPRECATED in Mithril client library, CLI and WASM:

  • The cardano_db function in the Client struct of the library and its WASM counterpart
  • The snapshot function has been removed from the Client struct of the library
  • The --backend v1 flag of the cardano-db command in the CLI; use --backend v2 instead.

• Client library, CLI and WASM:

  • Support for stable Cardano database v2 methods in the client WASM library.

  • Reworked the client CLI snapshot-converter command outputs:

    • Print all progress messages to stderr instead of stdout
    • Add support for --json parameter
    • Add a Docker run command in the final output to start the Cardano node with the converted ledger.

• Aggregator:

  • Superseded CExplorer API with Blockfrost API for pool names and tickers discovery mechanism
  • Removed optional cexplorer_pools_url configuration parameter
  • Added optional blockfrost_parameters configuration parameter (see documentation for details).

• Support for future decentralization of the configuration parameters of Mithril networks:

  • Added the /protocol-configuration/{epoch} route to fetch aggregator configuration for a given epoch
  • Refactored signer and aggregator (leader, follower) to read network configurations from a MithrilNetworkConfigurationProvider
  • Support for reading network configurations from the leader aggregator for follower aggregators

• Support for new Lagrange Mithril era.

• Support for removal of cardano_transactions_signing_config from the diffused Mithril network configuration.

• UNSTABLE:

  • Support for DMQ protocol in the signer, aggregator and relay.
  • Support for aggregator discovery mechanism in the client library and CLI.

• Crates versions:

Crate	Version
mithril-aggregator	0.8.14
mithril-client	0.13.2
mithril-client-cli	0.12.38
mithril-client-wasm	0.9.11
mithril-common	0.6.43
mithril-signer	0.3.7
mithril-stm	0.9.5

Mithril Distribution [2543.1] - 2025-11-03

• Client library, CLI and WASM:

  • DEPRECATED: The with_aggregator_client and new functions have been deprecated in the ClientBuilder struct of the library.

  • Support for default incremental backend (v2) for Cardano database restoration in the client library and CLI.

  • Enhanced verification of a Cardano database which now provides a list of tampered and missing files in case of failure.

  • Support for artifacts retrieval by epoch for the Cardano database and Cardano stake distribution:

    • Support for listing of Cardano database snapshots for a given epoch, the latest epoch, or the latest epoch with offset in the library.

    • Support for listing of Cardano stake distribution snapshots for a given epoch, the latest epoch, or the latest epoch with offset in the library.

    • Support for --epoch optional parameter to cardano-database snapshot list commands snapshots, the given value can be a number, latest, or latest-{offset} in the CLI.

• Aggregator:

  • BREAKING: The deprecated field next_cardano_transactions_signing_config in the /epoch-settings route of the aggregator has been removed.

  • Added the /artifact/cardano-database/epoch/{epoch} route to fetch the list of Cardano database snapshots for a given epoch, {epoch} can be a number, latest, or latest-{offset}.

  • Enhanced the /artifact/cardano-stake-distribution/epoch/{epoch} route to support latest and latest-{offset} as {epoch} values.

• UNSTABLE:

  • Support for multiple aggregate signature proof systems in the STM library, aggregator and client.

  • Support for decentralization of the configuration parameters of Mithril networks.

  • Support for Haskell DMQ node and modifications of the DMQ protocol.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.90
mithril-client	0.12.34
mithril-client-cli	0.12.33
mithril-client-wasm	0.9.7
mithril-common	0.6.25
mithril-signer	0.2.276
mithril-stm	0.5.5

Mithril Distribution [2537.0] - 2025-09-17

• Client library, CLI and WASM:

  • Support for stable cardano_database_v2 backend in the mithril-client library.

  • Support for stable v2 backend of cardano-db command and decommission of the cardano-db-v2 command in client CLI.

  • Support for stable verify command to verify an existing Cardano database in the client CLI.

  • Support for stable tools utxo-hd commands in client CLI.

  • Support for Mithril era transition in the client library, CLI and WASM.

• Support for Cardano node 10.5.1 in the signer and the aggregator.

• Refactored STM library for enhanced clarity, readability and maintainability.

• Added pre-built Linux ARM binaries in the distribution for the signer, client CLI, and aggregator.

• Added a /certificate/genesis route to the aggregator to fetch the latest genesis certificate.

• Support for loose enforcement of OpenAPI compatibility in HTTP clients of the Mithril nodes.

• Support for binary hex codec in the protocol keys and signatures.

• Support for multiple implementations of KES signature and verification operations.

• Support for the Rust 2024 edition (from 2021 edition).

• UNSTABLE :

  • Support for certificates chain synchronization between leader/follower aggregators.

  • Support for DMQ signature publisher in the signer and signature consumer in the aggregator.

  • Support for fake DMQ node implementation in the relay for testing purposes.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.84
mithril-client	0.12.30
mithril-client-cli	0.12.30
mithril-client-wasm	0.9.5
mithril-common	0.6.17
mithril-signer	0.2.268
mithril-stm	0.5.0

Mithril Distribution [2524.0] - 2025-06-16

• Support for Cardano node 10.4.1 in the signer and the aggregator.

• Support for recording client types origin (library, CLI and WASM) in the aggregator metrics.

• UNSTABLE :

  • New UTxO-HD snapshot converter command for client CLI:

    • Added the tools utxo-hd snapshot-converter command to the client CLI that converts a restored UTxO-HD snapshot to another flavor.
    • Support for converting to LMDB on-disk and Legacy in-memory flavors.

  • New api for client CLI partial cardano database restoration (aka Cardano DB V2):

    • Support for switching the backend with parameter --backend [v1,v2] to cardano-database snapshot list, snapshot show and download subcommands:
      • backend v1 (default): support full database restoration only.
      • backend v2 (require --unstable): support full and partial database restoration.
    • Added --start, --end, --allow-override to cardano-database download subcommand, supported only with --backend v2.
    • Deprecated cardano-database-v2 subcommand.

  • Support for DMQ signature consumer and processor in the aggregator.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.58
mithril-client	0.12.11
mithril-client-cli	0.12.11
mithril-client-wasm	0.9.1
mithril-common	0.5.35
mithril-signer	0.2.249
mithril-stm	0.4.2

Mithril Distribution [2517.0] - 2025-05-05

• BREAKING changes in Mithril client CLI and library:

  • To fast bootstrap a Cardano node, the new --include-ancillary option has been added to the Cardano node database command in the Mithril client CLI.
  • Without this option, only final immutable files are downloaded, and the ledger state must be computed from the genesis block when the Cardano node starts.
  • The --include-ancillary option requires the usage of an ancillary verification key (--ancillary-verification-key or ANCILLARY_VERIFICATION_KEY) which is specified in the Networks configuration page.
  • Clients from distribution 2513 and earlier are not compatible with this change and must be updated.

• Support for Cardano node 10.3.1 in the signer and the aggregator.

• Support for ancillary files signature for Cardano node database and Cardano node database v2 certification with IOG key.

• Support for origin tags in Mithril client library, CLI and WASM to record the origin of client requests.

• UNSTABLE implement support for leader/follower registration in the infrastructure.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.44
mithril-client	0.12.0
mithril-client-cli	0.12.0
mithril-client-wasm	0.9.0
mithril-common	0.5.27
mithril-signer	0.2.243
mithril-stm	0.3.45

Mithril Distribution [2513.0] - 2025-03-28

• BREAKING changes in Mithril nodes:

  • Upgraded the minimum required glibc version from 2.31 to 2.35 for the pre-built Linux binaries
  • Mithril signer with versions <=0.2.200 must be updated following the cleanup of Thales era legacy code
  • Mithril client library with_snapshot_uploader function has been renamed to with_file_uploader.

• Support for Cardano node 10.2.1 in the signer and the aggregator.

• End support for macOS x64 pre-built binaries for the client CLI.

• Cardano database full certification:

  • Creation of two separate archives for the immutable files and for the ancillary files.
  • Added a signed manifest file to the ancillary archive (contains the list of all files in the archive and their sha256 hashes).
  • Added client validation of the signature of the manifest file and the integrity of the files in the archive after downloading an ancillary archive.

• UNSTABLE Implement a follower signer registration mode in the aggregator.

• UNSTABLE Cardano database incremental certification:

  • Implement the client library for the signed entity type CardanoDatabase (download and prove snapshot).
  • Implement the client CLI commands for the signed entity type CardanoDatabase (snapshot list, snapshot show and download commands).
  • Implement an example crate for the signed entity type CardanoDatabase.
  • Lighter ancillary archive by only including what's strictly necessary: the latest ledger file and the last immutable file trio.
  • Added a signed manifest file to the ancillary archive (contains the list of all files in the archive and their sha256 hashes).
  • Added client validation of the signature of the manifest file and the integrity of the files in the archive after downloading an ancillary archive.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.23
mithril-client	0.11.17
mithril-client-cli	0.11.11
mithril-client-wasm	0.8.6
mithril-common	0.5.14
mithril-signer	0.2.237
mithril-stm	0.3.42

Mithril Distribution [2506.0] - 2025-02-14

• ⚠️ SECURITY: This distribution embeds a fix for the Mithril certificate chain could be manipulated by an adversarial signer security advisory GHSA-724h-fpm5-4qvr. All users running a client library, client CLI or client WASM are strongly encouraged to update them to the latest version.

• Support for Cardano node 10.1.4 in the signer and the aggregator.

• Remove support for Thales era in the signer and the aggregator.

• Build and publish both a stable version (for release networks) and an unstable version (for testing networks) of the explorer.

• Activate aggregator HTTP responses compression by the reverse proxy in the infrastructure.

• Support certification of the protocol parameters and epoch in the certificate chain.

• UNSTABLE Cardano database incremental certification:

  • Implement the artifact routes of the aggregator for the signed entity type CardanoDatabase.
  • Implement the immutable file digests route in the aggregator.
  • Implement the artifact ancillary builder in the aggregator.
  • Implement the artifact immutable builder in the aggregator.
  • Implement the artifact digest builder in the aggregator.
  • Implement the client library for the the signed entity type CardanoDatabase (list snapshots and get snapshot detail).
  • Implement the client library functions for the the signed entity type CardanoDatabase within the WASM library.

• Crates versions:

Crate	Version
mithril-aggregator	0.7.1
mithril-client	0.11.1
mithril-client-cli	0.11.0
mithril-client-wasm	0.8.1
mithril-common	0.5.0
mithril-signer	0.2.228
mithril-stm	0.3.37

Mithril Distribution [2450.0] - 2024-12-17

• BREAKING changes in Mithril client library, CLI, and WASM:

  • Remove deprecated network field from the internal CardanoDbBeacon.
  • The Mithril certificates of type CardanoImmutableFilesFull can't be verified anymore with the previous clients.
  • Clients from distribution 2445 and earlier must be updated.
  • Aggregators from distribution 2445 and earlier must be updated and recompute their certificate hashes.

• Add Node.js and bundler targets to the Mithril client WASM library npm package.

• Add a one line shell installation script for the Mithril nodes.

• Add execution rights to pre-built binaries of the Mithril nodes packaged with GitHub releases.

• Implement the /status route on the aggregator's REST API to provide information about its current status.

• Implement a new genesis generate-keypair command in aggregator CLI to generate a new genesis keypair.

• Update to Rust 1.83.

• UNSTABLE Cardano database incremental certification:

  • Implement the new signed entity type CardanoDatabase.
  • Implement the signable builder for the signed entity type CardanoDatabase.

• Crates versions:

Crate	Version
mithril-aggregator	0.6.0
mithril-client	0.10.4
mithril-client-cli	0.10.5
mithril-client-wasm	0.7.2
mithril-common	0.4.96
mithril-signer	0.2.221
mithril-stm	0.3.34

Mithril Distribution [2445.0] - 2024-11-07

• BREAKING changes in Mithril client library, CLI, and WASM:

  • Remove deprecated beacon field from Mithril certificates.
  • Clients from distribution 2430 and above are compatible with this change.

• Support for Prometheus metrics endpoint in aggregator.

• Support for stable Cardano stake distribution client library, CLI and WASM.

• Support for Cardano node 10.1.2 in the signer and the aggregator.

• Deprecate protocol and next_protocol in favor of signer_registration_protocol in the /epoch-settings route.

• Fix an issue that caused unnecessary re-scan of the Cardano chain when importing transactions.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.102
mithril-client	0.10.1
mithril-client-cli	0.10.1
mithril-client-wasm	0.6.1
mithril-common	0.4.79
mithril-signer	0.2.209
mithril-stm	0.3.31

Mithril Distribution [2442.0] - 2024-10-21

• Decentralization of the signature orchestration:

  • Optimizations of the state machine used by the signer to create individual signatures.

  • Support for buffering of incoming single signatures by the aggregator if it can not aggregate them yet.

  • Expose the Cardano transactions signing configuration for the current and upcoming epoch via the /epoch-settings route.

  • Signer computes what to sign independently of the aggregator.

  • Deprecate aggregator /certificate-pending route as the signer does not need it anymore.

• Support for new Pythagoras Mithril era.

• Support for signing the protocol parameters in the Genesis certificate.

• Refactor the builder of the protocol messages, and add support for protocol parameters and epoch parts.

• Support for Cardano node 9.2.1 in the signer and the aggregator.

• Support for stable Cardano transaction client library, CLI and WASM.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.83
mithril-client	0.9.2
mithril-client-cli	0.9.15
mithril-client-wasm	0.5.2
mithril-common	0.4.69
mithril-signer	0.2.200
mithril-stm	0.3.30

Mithril Distribution [2437.1] - 2024-09-23

• BREAKING changes in Mithril client WASM:

  • Implementation of seamless transition from unstable to stable features.
  • A new unstable option in the client allows the usage of unstable features.
  • The previous client.unstable implementation is not supported anymore and must be replaced with client.

• Support for Mithril nodes footprint support in Prometheus monitoring in infrastructure.

• Add support for custom HTTP headers in Mithril client WASM library.

• Support file:// URLs for snapshot locations in Mithril client.

• Add feature options num-integer-backend and rug-backend for mithril-common and mithril-client crates. Allows to disable rug-backend and avoid LGPL license usage.

• Post Chang hard fork cleanup of the CI, devnet and infrastructure.

• Cardano transactions certification (stable for signer and aggregator):

  • Support for Mithril signer memory optimization when signing Cardano transactions with multiple Merkle tree storage backends.
  • Support infinite preloading of Cardano transactions in signer.
  • Fix Cardano transactions rollbacks creating panics in signer and aggregator.

• Cardano stake distribution certification (stable for signer and aggregator):

  • Implement the signable and artifact builders for the signed entity type CardanoStakeDistribution.
  • Implement the HTTP routes related to the signed entity type CardanoStakeDistribution on the aggregator REST API.
  • Added support in the mithril-client library for retrieving CardanoStakeDistribution by epoch or by hash, and for listing all available CardanoStakeDistribution.
  • Implement CardanoStakeDistribution commands under the --unstable flag in the Mithril client CLI to list all available CardanoStakeDistribution and to download artifact by epoch or hash.
  • Implement mithril-client library functions related to CardanoStakeDistribution within the WASM library.
  • Add new tab Cardano Stake Distribution in the explorer.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.63
mithril-client	0.8.18
mithril-client-cli	0.9.12
mithril-client-wasm	0.4.1
mithril-common	0.4.51
mithril-signer	0.2.182
mithril-stm	0.3.29

Mithril Distribution [2430.0] - 2024-07-30

• mithril-aggregator node produces artifact for different signed entity types in parallel.

• Fix Agency is theirs error in the ChainReader when the underlying Chain sync client does not have agency.

• Support for Cardano node 9.1.0 in the signer and the aggregator.

• Support better disk configuration in terraform deployments with the CI/CD workflows.

• UNSTABLE Cardano transactions certification:

  • Make Cardano transaction signing settings configurable via the CD.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.50
mithril-client	0.8.10
mithril-client-cli	0.9.9
mithril-client-wasm	0.3.8
mithril-common	0.4.38
mithril-signer	0.2.170
mithril-stm	0.3.26

Mithril Distribution [2428.0] - 2024-07-15

• Provide a feature to the mithril-client crate to allow selection of the TLS implementation used by the dependent reqwest crate.

• Implement a reset mechanism for mutable resources returned to a pool (ResourcePool) to keep it in a consistent state.

• Implement a lock mechanism on SignedEntityType to prevent concurrent work on a same entity type.

• Extended CI build and test steps for MacOS arm64 runners and include pre-built binaries for MacOS arm64 in the releases.

• Add a regularly run upkeep task to the mithril-aggregator and mithril-signer to clean up stale data and optimize their databases.

• Support for Cardano node 9.0.0 in the signer and the aggregator.

• Refactor the Cardano node configuration in the infrastructure.

• Add prettier configuration to standardize the code formatting in the repository.

• Field beacon becomes optional in CertificatePendingMessage response of /certificate-pending route.

• UNSTABLE Cardano transactions certification:

  • Optimize the performances of the computation of the proof with a Merkle map.
  • Handle rollback events from the Cardano chain by removing stale data.
  • Preload Cardano transactions and Block Range Roots at signer & aggregator startup.
  • Chunk the Cardano transactions import in mithril-signer to reduce disk footprint by running the pruning process more frequently.
  • Add a database connection pool on the Cardano transaction repository for increased performances of the prover.
  • Import Cardano transactions with Chain Sync mini protocol and Pallas chain reader.
  • Avoid aggregator and signer being blocked when importing the Cardano transactions.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.40
mithril-client	0.8.7
mithril-client-cli	0.9.6
mithril-client-wasm	0.3.7
mithril-common	0.4.29
mithril-signer	0.2.161
mithril-stm	0.3.24

Mithril Distribution [2423.0] - 2024-06-12

• BREAKING changes in Mithril client CLI:

  • The deprecated snapshot command is removed from the Mithril client CLI
  • Use the cardano-db snapshot command instead.

• Update website and explorer user interface to use the new mithril logo.

• UNSTABLE Cardano transactions certification:

  • Support computation of the Cardano Transactions signature and proving with the pre-computed Block Range Merkle Roots retrieved from the database.
  • Prune Cardano Transactions from the signer database after the Block Range Merkle Roots have been computed.
  • Implement a Chain Reader which retrieves blocks from the Cardano chain with Pallas through the chainsync mini-protocol.
  • Implement a Resource Pool and use it for caching Block Range Merkle maps used by the Cardano transactions prover and improving the throughput.
  • Change the beacon of the Cardano Transactions to a block number instead of an immutable file number.

• Crates versions:

Crate	Version
mithril-aggregator	0.5.16
mithril-client	0.8.3
mithril-client-cli	0.9.2
mithril-client-wasm	0.3.3
mithril-common	0.4.13
mithril-signer	0.2.141
mithril-stm	0.3.22

Mithril Distribution [2418.1] - 2024-05-13

• BREAKING changes in Mithril client CLI:

  • Certificate chain structure has been modified to remove coupling with immutable file number.
  • Client needs to be updated to verify certificate chain.

• Support incremental import for Cardano Transactions instead of scanning the whole immutable database for every signing round.

• Chain observers support the retrieval of the current Cardano chain point.

• Deprecate portable feature of mithril-stm and mithril-client:

  • Instead, always enable BLST portable feature in mithril-stm for runtime check of intel ADX instruction set.
  • portable feature now has no effect and should be removed from crate dependencies.
  • Removed it from all other crates (including mithril-common).

• Switched memory allocator to jemallocator on signer and aggregator to avoid memory fragmentation when signing transactions (which lead to RES memory not being properly returned to the OS).

• Crates versions:

Crate	Version
mithril-aggregator	0.5.0
mithril-client	0.8.0
mithril-client-cli	0.8.0
mithril-client-wasm	0.3.0
mithril-common	0.4.0
mithril-signer	0.2.130
mithril-stm	0.3.19

Mithril Distribution [2412.0] - 2024-03-26

• GitHub release: https://github.com/input-output-hk/mithril/releases/tag/2412.0

• DEPRECATED the snapshot command in the Mithril client CLI:

  • Renamed to cardano-db snapshot.
  • Will be removed in 2 distributions.

• Support for Prometheus endpoint for metrics in signer (setup guide).

• Full support for chain observer with Pallas in signer and aggregator.

• Support for Cardano node 8.9.0 in the signer and the aggregator.

• Bug fixes and performance improvements.

• Crates versions:

Crate	Version
mithril-aggregator	0.4.49
mithril-client	0.6.9
mithril-client-cli	0.7.6
mithril-client-wasm	0.2.5
mithril-common	0.3.21
mithril-signer	0.2.116
mithril-stm	0.3.17