CHANGELOG.md

Changelog

vNEXT

6.2.0 (2026-01-21)

🚀 Added

• v6.2.0 upgrade script (#329) (564ae6b)
• Ignore TEE framework bits in dataset tags for cross-framework compatibility (#325) (2349970)
• Use custom errors when receiveApproval fails and set callbackgas to 200k (#331) (81778ee)
• Enable deposit and match orders in a single tx (#316) (4100b90)
• Upgrade all contracts to Solidity v0.8.0 (#287) (55729ad)

✍️ Changed

• Clean npm dependencies & disable postinstall scripts (#333) (db44994)
• Refactor dataset order tag ignoring code (#332) (f50b898)
• Update CODEOWNERS to correct username for review requests (#334) (3b0db05)
• update sepolia owner (#335) (16f30e3)

📋 Misc

• add CHANGELOG.md to .prettierignore (#326) (001a6a6)
• Clean contracts and tests - part1 (#330) (52e8fc7)
• Save upgrade artifacts - arbitrum (#327) (5ec3166)
• Save upgrade artifacts - arbitrum (runId:21206392301) (#337) (55c668a)
• Save upgrade artifacts - arbitrumSepolia (runId:20332201318) (#336) (5b1ec5d)

6.1.0 (2025-11-13)

Main Feature: Bulk Processing Upgrade – Enables efficient batching of iExec tasks with optimized performance and improved validation for bulk SMS orders.

🚀 Features

• Bulk Processing Functions: (#302, #327)
  • viewApp, viewDataset, viewWorkerpool - Read asset details in single transaction
  • assertDatasetDealCompatibility - Validate bulk order compatibility with deals for SMS
• Dataset Validation: Enhanced compatibility check returning detailed reasons (#267, #266)
  • Revert if dataset order incompatible with deal (#278)
• SDK Compatibility: Restore setName as nonpayable function (#286)

🏗️ Architecture

• Facet Cleanup: Remove unintentionally added constants getters by changing visibility to internal (#260)
  • Removes duplicate functions: CONTRIBUTION_DEADLINE_RATIO(), FINAL_DEADLINE_RATIO(), GROUPMEMBER_PURPOSE(), etc.
• Facet Refactoring: Migrate IexecAccessorsFacet to IexecPocoAccessorsFacet (#259)
• Boost Removal: Remove boost facets from Arbitrum Sepolia for mainnet parity (#299)

🔧 Developer Experience

• Tooling & CI/CD:
  • Conventional commits and release-please (#256)
  • GitHub Actions for callback gas setting (#274)
  • GitHub Actions for facet upgrades (#289)
  • Remove precommit hooks, move to CI (#320)
• Verification:
  • Smart contract verification support (#277)
  • Upgrade to etherscan v2 (#288)
• Dependencies:
  • Upgrade Hardhat (#313)

📦 Distribution

• Deployment Artifacts: Clean up and organize deployment artifacts (#300, #309)
• Upgrade Scripts: Improved facet upgrade tooling (#298)
• Diamond Description: Print facet names and save diamond structure (#301)
• Upgrade Artifacts: Save upgrade deployment records (#302, #327)

v6.0.0 - Diamond Proxy Pattern (ERC-2535)

What's new?

🚨 Breaking changes

The proxy architecture has been migrated from ERC-1538 Transparent Contract Standard to ERC-2535 Diamond Standard.

Impact:

• No changes to on-chain business logic or contract interfaces used by regular clients.
• Existing integrations that interact with contract functions will continue to work without modification.
• Breaking change applies only to how the proxy’s upgrade mechanism works and how contract structure is exposed to indexers, explorers, or tooling that previously relied on ERC-1538’s upgrade API.

💡 Versioning note: Technically, since public APIs for business logic did not change, this could be a minor release under Semantic Versioning. However, because the upgrade proxy standard changed and this could impact indexers and tooling, releasing as a major version ensures better visibility of this architectural shift.

❌ Removed functions and events (ERC-1538):

• function totalFunctions(...)
• function functionByIndex(...)
• function functionById(...)
• function functionExists(...)
• function functionSignatures(...)
• function delegateFunctionSignatures(...)
• function delegateAddress(...)
• function delegateAddresses(...)
• function updateContract(...)
• event CommitMessage(...)
• event FunctionUpdate(...)

✨ New functions (ERC-2535)

• function diamondCut(FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata)
• function facets() external view returns (Facet[] memory)
• function facetFunctionSelectors(address _facet) external view returns (bytes4[] memory)
• function facetAddresses() external view returns (address[] memory)
• function facetAddress(bytes4 _selector) external view returns (address)
• event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata)

✍️ Updated contracts

All contracts have been updated (formatting, renaming, …) but no breaking changes have been introduced to the business logic.

🚀 Deployment & network support

• The PoCo protocol is now available on Arbitrum One Mainnet.

More details

• Update docs and diagrams (#250)
• Deploy on Arbitrum Mainnet (#249)
• Add support for Arbitrum Mainnet (#248)
• Publish NPM package for version v5.6.0-rc1 (#247)
• Deploy on Arbitrum Sepolia (#246)
• Set owner at deployment (#245)
• Use lib as storage. (#243)
• Save IexecLibOrders_v5 in config file (#242)
• Migrate proxy to Diamond pattern - ERC-2535 (#241):
  • Restore compatibility with iExec SDK. (#240)
  • Target latest EVM version (#239)
  • Adapt contracts file tree (#238)
  • Use namespaced storage (#236, #237)
  • Fix script folder (#235)
  • Format all solidity files (#233)
  • Replace ERC1538 wording by diamond Proxy wording (#229, #230, #234)
  • Update deployment CI (#228)
  • Format contracts (#227)
  • Remove ENS module (#225)
  • Add Diamond contract unit tests (#224)
  • Fix fallback and receive (#223)
  • Init contracts migration (#222)

v5.5.1 - Fresh development environment

What's new?

• Add some small optimizations to IexecPoco2Delegate contract (#167, #168).
• Add support for CreateX factory.
• Migrate to Ethers v6.
• Migrate all Javascript files to Typescript.
• Purge Truffle.
• Migrate CI from Jenkins to Github Actions.

Updated contracts

• IexecPoco2Delegate.sol

More details

• Release v5.5.1 #220
• Add gitub action workflow for deployment (#218)
• Rename Avalanche Fuji and Arbitrum Sepolia network configuration (#217)
• Deploy on new testnet chains using CreateX factory (#216)
• Add CreateX factory for new chain deployment (#215)
• Add Github Action CI in order to publish NPM package (#214)
• Housekeeping (#208)
• Add Halborn "Poco v5.5 & Voucher v1.0" audit report (#205)
• Refactor Factory deployer (#206)
• Enable native tests on CI (#204)
• Migrate to Ethers v6:
  • Deployment scripts (#187, #203)
  • Tests
    • IexecEscrow (#199)
    • ENSIntegration, IexecOrderManagement, IexecRelay (#195, #199)
    • IexecCategoryManager, IexecERC20 (#192, #199, #202)
    • test/fullchain (#190, #196)
    • IexecAccessors, IexecMaintenance (#189, #191, #199)
    • IexecPoco (#196)
    • trust specific field (#201)
    • IexecPocoBoost (#198)
    • fixed a minor issue in BigInt for IexecWrapper (#202).
• Migrate scripts to TypeScript: (#184)
  • getFunctionSignatures.js, common-test-snapshot.js, test-storage.js, timelock.js
• Migrated utility files to TypeScript : (#183)
  • FactoryDeployer.js, constants.js, odb-tools.js
  • Removed deprecated scripts/ens/sidechain.js
• Purge Truffle leftovers (#180, #181, #182, #185, #186)
• Sunset Jenkins pipeline (#178)
• Re-use variable in IexecPoco2Delegate in contribute(...) function. (#168)
• Remove unnecessary back and forth transfers in IexecPoco2Delegate happening during claim(..). (#167)
• Remove references to blockscout v5. (#161)
• Migrate integration test files to Typescript & Hardhat:
  • 000_fullchain.js (#156, #157)
  • 00X_fullchain-Xworkers.js (#158, #159)
  • 000_fullchain-5workers-1error.js (#160, #162)
  • Clean ToDo (#163)
  • 200_fullchain-bot.js (#164, #166)
  • 201_fullchain-bot-dualPool.js (#171, #172)
  • Fix balance checks in integration tests (#165)
  • 300_fullchain-reopen.js (#170, #173)
  • 000_fullchain-ABILegacy.js (#174, #175)
  • 400_contributeAndCallback.js (#176, #177)
• Remove smock from unit tests:
  • IexecEscrow.v8 (#154, #155)
  • IexecPocoDelegate (#149, #151)
  • IexecPocoBoost (#148, #150, #153)
• Migrate unit test files to Typescript & Hardhat:
  • ERC1154 (#145, #146, #147, #152)
  • IexecEscrowToken (#141, #143)
  • IexecRelay (#140)
  • IexecPoco1 (#136, #137)
  • IexecPoco2
    • kitty (#142, #144)
    • reopen (#135)

v5.5.0 - Deal sponsoring

What's new?

• Added the ability to sponsor a deal for a requester via the new sponsorMatchOrders(..) function.
  • contracts implementation ✍️
  • deployment on iExec Bellecour network 🚀
• Initialized « boost » mode to improve deal throughput
  • contracts implementation ✍️

More details

• Include IexecOrderManagement module in Poco sponsoring upgrade. (#132)
• Update function visibilities to external in IexecPoco and IexecOrderManagement modules. (#131)
• Fix configs native and token. (#129)
• Bump dependencies: (#127)
  • @openzeppelin/hardhat-upgrades, hardhat-dependency-compiler, web3, prettier, zx, and others [minor/patch version bump]
  • prettier-plugin-organize-imports@4
• Clean some TODOs and harmonize unit tests. (#123)
• Add set-callback-gas.ts script. (#121)
• Accept any signature format in SignatureVerifier.v8 when the account is a smart contract. (#120)
• Update UML class diagrams. (#112)
• Generate Solidity documentation. (#111)
• Migrate unit test files to Typescript & Hardhat:
  • Resources (#125, #126)
  • Registries (#122, #124)
  • IexecPoco2
    • reopen (#133)
    • finalize (#79, #117, #119)
    • reveal (#114, #118)
    • contribute (#108, #109, #110)
  • IexecPoco1 (#107, #113, #115, #116)
  • Add .test suffix to unit test files (#106)
  • ENSIntegration (#105)
  • IexecOrderManagement (#101, #102, #103, #104)
  • IexecMaintenance (#100)
  • IexecEscrowNative (#99)
  • IexecERC20 (#98)
  • IexecCategoryManager (#97)
  • IexecAccessors (#96)
• Wait for transactions occurring during deployment. (#95)
• Deploy and configure ENS with hardhat. (#93)
• Fix contribute & finalize with callbacks. (#92)
• Deploy Poco sponsoring on local fork of Bellecour. (#91)
• Create slither smart contract entry point and run slither analysis on new contracts. (#87)
• Upgrade to @openzeppelin/contracts@5.0.2 and upgrade other dependencies. (#86)
• Deploy IexecPocoAccessorsDelegate module. (#85)
• Create _computeDealVolume and expose ComputeDealVolume functions (#82)
• Upgrade Order Management to solidity ^0.8.0. (#84)
• Resolve naming conflict in accessors. (#81)
• Refund sponsor on claimBoost. (#80)
• Seize sponsor on success task. (#79)
• Refund sponsor on claim. (#77)
• Sponsor match orders boost. (#67, #78)
• Migrate to hardhat tests related to:
  • initialize (#74, #75)
  • claim (#65, #66, #72, #76)
• Upgrade Poco2 to solidity v0.8 . (#63)
• Use common helpers in Poco Boost integration tests. (#62)
• Upload coverage reports to Codecov. (#61)
• Deploy contracts in tests explicitly with hardhat or truffle fixture. (#59)
• Add the ability to deploy without truffle fixture. (#58)
• Sponsor match orders. (#57, #60)
• Upgrade Poco1 to solidity ^0.8.0 (#55):
  • Migrate to openzeppelin@v5
  • Migrate to SignatureVerifier.v8
• Change MNEMONIC var name for production & clean Hardhat file. (#53)
• Format files & update copyright notices:
  • DelegateBase, IexecERC20Core (#64)
  • PoCo2 contracts (#54)
  • PoCo1 contracts (#52)
  • Order Management contract (#83)
• Remove enterprise mode. (#51, #56)
• Add PoCo Boost modules to a timelock controlled proxy.
• Add IexecEscrow.v8 tests and developer notices.
• Add tests around callback feature verifying interests of actors are guaranteed.
• Reformat JS files.
• Create a hardhat network close to the iExec Bellecour blockchain.
• Merge settings and v8Settings using object spread.
• Remove useless files.
• Add Slither config. Run single contract Slither analysis on CI.
• Make Poco Boost ITs runnable with "native" mode.
• Migrate puml2links.sh to zx.
• Update copyright and license notices.
• Introduce zx for task scripting.
• Compile latest contracts with 0.8.21.
• Use a single 0.8.19 solidity version to compile latest contracts.
• Fix prettier solidity plugin resolution.
• Remove patched test helpers.
• Clean poco-chain files.
• Bump dependencies.
• Check balance in transfer operation.
• Reformat tests.
• Reformat contracts.
• Add mocha to use test explorer.
• Refactor tests.
• Add dedicated Poco Boost accessors.
• Implement claimBoost:
  • Refund requester.
  • Seize workerpool and reward kitty.
• Implement pushResultBoost:
  • Verify task exists.
  • Push result before deadline.
  • Require enclave challenge when TEE bit of tag set.
  • Verify signatures
    • scheduler
    • enclave
    • tee broker
  • Reward worker.
  • Reward app provider.
  • Reward dataset provider.
  • Unlock scheduler stake.
  • Reward scheduler.
  • Handle callback.
• Implement matchOrdersBoost:
  • Verify compatibility of orders
    • trust
    • category
    • price
    • tag
    • restrictions
      • Assets or requester belong to groups in ERC734 identity contract.
  • Verify entries are registered & category exists.
  • Verify signatures or presignatures of orders.
  • ERC1271 contracts can be signers of orders.
  • Compute volume & consume orders.
  • Lock requester deal value.
  • Store deal.
  • Emit events.
  • Lock scheduler stake.
  • Return dealId.
  • Reduce gas footprint:
    • Remove beneficiary from deal storage.
    • Reduce Boost deal storage from 6 to 5 slots.
    • Reduce gas consumption on lock() calls.
    • Cache addresses of assets and requester from arguments.
    • Init local vars and cache order category.
    • Optimize deal storing by slot.
    • Change local structure for local variables.
    • Store in variable if read multiple times.
    • Group hasDataset block.
  • Remove useless variable.
• Update prettier rules and reformat.
• Migrate IexecPocoBoost linking to hardhat deploy script.
• Clean files related to docker build of a test blockchain.
• Run automatically before commit a prettier on .ts and .sol staged files.
• Upgrade eth_signTypedData function to use ethers. Remove now useless eth-sig-util.
• Init Boost deal structure.
• Publish coverage report on CI/CD. Refactor Jenkinsfile.
• Deploy Nominal and Boost modules with Hardhat.
• Upgrade hashStruct function to use ethers.
• Add Boost module.
  • Add interfaces.
• Add Store contract compatible with solidity ^0.8.0.
• Update documentation:
  • Generate class diagrams from solidity contracts.
  • Add task and contribution state diagrams.
  • Add boost workflow sequence diagram. Update nominal workflow sequence diagram.
  • Update TEE workflow sequence diagram.
  • Update actors diagram.
  • Rename UMLs.md file to standard README.md.
  • Add inline solidity documentation.
  • Update class diagrams.
  • Create folder docs that contains all documentation material.
• Migrate to Hardhat:
  • Init Hardhat project.
  • Migrate unit tests with @nomiclabs/hardhat-truffle5.
  • Fetch @iexec/solidity@0.1.1 from default public registry.
  • Migrate tests coverage with solidity-coverage of @nomicfoundation/hardhat-toolbox.

v5.4.2

• Use latest Nethermind base image nethermindeth/nethermind:iexec (saved internally at nexus.intra.iex.ec/nethermind:1.18.x-0) containing a fix for #5506.

v5.4.1

• Fix default poco-chain CMD. (#127)

v5.3.2

• remove EIP 1559 for native testchains
• drop testchain ganache 1s builds in favor of custom cmd (use --miner.blockTime 1)
• add FIFS ens domains in testchains migrations

v5.3.1

• updated dev deps
• migrated from parity to openethereum
• upgraded ganache from v6 to v7
• updating testchains to support london and arrow-glacier hardforks

v5.3.0

• added iExec enterprise