v2.6.8

🚀 Release Notes

✨ Highlights

• EIP-1559 mainnet activation with full Cancun support
• Blob & KZG cryptography support (post-Cancun readiness)
• Significant EVM performance improvements
• Major stability fixes for txpool, consensus, and RPC
• Support solidity v0.8.28
• Large-scale codebase modernization (Go 1.23, CI/CD, lint cleanup)

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Upgrade Instruction for Xinfin-Node

cd mainnet && bash upgrade.sh

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🧩 Protocol & EVM Upgrades

• Implement EIP-1559 (mainnet release configuration)
• Implement EIP-1153 (Transient Storage)
• Implement EIP-2565
• Implement EIP-3651 (Warm Coinbase)
• Implement EIP-5656 (MCOPY opcode)
• Implement EIP-6780
• Implement EIP-7516
• Enable Cancun instruction set
• Implement BLOBHASH opcode (0x49)
• Support KZG cryptography and blob handling

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⚙️ Core / EVM / VM Improvements

• Refactor vm.Context into BlockContext and TxContext
• Improve EVM reusability and reduce memory allocations
• Remove legacy interpreter interface
• Optimize precompile handling and jumpdest analysis
• Improve trace log formatting and return data handling
• Upgrade core/vm for reorg, Cancun, and post-Cancun correctness
• Improve EstimateGas API accuracy and performance

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🐛 Bug Fixes

• Fix incorrect blockHash returned by eth_getLogs
• Fix gas price calculation with empty blocks
• Fix txpool overflow caused by pending special transactions
• Fix block production stalls caused by special txs
• Fix integer divide-by-zero in header validation
• Fix nil handling in block number retrieval
• Fix xdc-prefix address encoding bug
• Fix consensus vote threshold and epoch boundary issues
• Fix node account manager memory leak
• Fix duplicate metrics collection process
• Fix downloader bugs and speed up downloader tests

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🔐 Consensus, P2P & Networking

• Enforce signer uniqueness using signer public keys
• Improve epoch timeout handling and countdown logging
• Add trusted peer management RPCs:
  • admin_addTrustedPeer
  • admin_removeTrustedPeer
• Increase default max peers to 50
• Allow HTTP and WebSocket servers on the same port
• Add dial metrics to P2P discovery

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📡 RPC, Node & CLI Enhancements

• Add RPC gas cap flag (--rpc-gascap, default: 50M)
• Improve RPC EstimateGas behavior
• Add database CLI commands:
  • stats, compact, inspect, get, put, delete
• Add read-only database option
• Improve block report and chain config output formats
• New RPC API:
  • xdpos_getBlockInfoByEpochNum

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🧹 Refactoring & Code Quality

• Extensive staticcheck cleanup (SA, ST, S-series warnings)
• Remove unused code, empty functions, and redundant conversions
• Replace deprecated Go APIs (ioutil, legacy timers, string helpers)
• Migrate go-bindata → embed
• Simplify database access abstractions
• Refactor rawdb into a dedicated package

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🏗 Build, Tooling & CI/CD

• Upgrade Go toolchain to Go 1.23
• Add support for golangci-lint v1.63.4
• Enforce go mod tidy and go generate checks
• Migrate CLI to urfave/cli/v2
• Improve CI bootnode handling and backup RPC support

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🌐 Network, Devnet & Testnet

• New devnet deployment and recovery improvements
• Reduce devnet gas limit to 50M
• Update devnet and testnet block numbers and timeouts
• Update bootnode lists (devnet & mainnet)
• Improve private devnet networking support
• Cost-saving RPC downsizing for devnet

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⚠️ Deprecations & Removals

• Remove deprecated CLI flags:
  • --mine, --fast, --light
  • --XDCx-datadir
• Remove deprecated packages:
  • Whisper
  • ENS
  • Android & iOS mobile builds
• Remove legacy configs and unused genesis dependencies
• Emit warnings when deprecated configs or resources are used

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🔒 Security & Audit

• Apply fixes from CertiK audit findings
• Harden consensus signature validation
• Fix sender recovery for pending transactions
  (aligned with upstream Ethereum fixes)

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📝 Notes for Operators

• EIP-1559 activation is a consensus-breaking upgrade
  → All nodes must upgrade before the activation block.
• Deprecated flags and packages are no longer supported.
• Devnet and testnet parameters have changed—verify configs before upgrading.

v2.4.2-hotfix

What's Changed

• increase timeout to 5 mins to let node mine out block by @benjamin202410 in #1900

Full Changelog: v2.4.2...v2.4.2-hotfix

v2.6.7-testnet

Full Changelog: v2.6.6-testnet...v2.6.7-testnet

v2.6.6-testnet

Performance Improvements

• Pre-allocate memory for slices and maps (XFN-148).
• Optimized CompareSignersLists.
• Improved cached-prev comparison logic in core (XFN-96).
• Performance boosts in ChaindbCompact() / ChaindbProperty() (XFN-139).
• Faster unique signature verification (XFN-03).
• Reduced overuse of log.Crit, improved logging efficiency.
• Improved txpool performance and reduced lock contention.
• More efficient future block handling logic (XFN-101).

Ethereum EIPs / Protocol & Consensus Enhancements

• Multiple XDPoS V2 validation and parameter fixes (XFN-45, XFN-125, XFN-151, etc.).
• Fixed rpc.BlockNumber overflow issues across modules (XFN-69).
• Verified header hash correctness in getEpochSwitchInfo.
• Enforced gas limit bounds and validation logic (XFN-07, XFN-59, XFN-1619).
• Skipped gas limit verification for genesis block.
• Added DeepCopy() for PoolObj (XFN-04).
• Added epoch-switch check in IsSigner (XFN-90).
• Earlier rejection of invalid signatures (XFN-29).
• Validated gap numbers in masternode updates (XFN-11).
• Enforced minimum timestamp for initial V2 block (XFN-16).
• Correct special-tx processing behavior (XFN-67).
• Removed “fake storage” implementation (XFN-150).
• Separated V1 and V2 full verifier arrays.

RPC & API Enhancements

• Updated BlockNumber constants to match ethclient (ethereum#27219).
• Fixed unsafe pointer manipulation in tracers (XFN-91).
• Improved error propagation in internal/ethapi (XFN-118).
• Pre-allocated map in txpool API for better performance (XFN-106).
• Validated tx JSON non-nil before use.
• Fixed incorrect condition judgment in RPC (XFN-73).
• Ensured gasprice cache purge goroutine terminates properly (XFN-89).
• Corrected parameter name mismatch in HookPenalties() (XFN-141).

Security & Bug Fixes

• Fixed inconsistent tx blacklist enforcement (XFN-98).
• Fixed trie DB reference dereference issues (XFN-85).
• Resolved unsafe slice creation pointer usage.
• Added missing nil checks and improved error handling across modules.
• Synchronized txpool cache with mutex protection (XFN-65).
• Resolved concurrency issues: data races, goroutine leaks, unsynchronized reads.
• Fixed overflow, modulo-by-zero, and boundary condition bugs.
• Improved signature, gas fee, and immutability handling logic.
• Corrected mined block event handling and transaction queue logic.
• Fixed incorrect tx queue pop order (XFN-37).
• Eliminated variable shadowing in many functions.

Code Refactoring & Cleanup

• Removed unused variables, functions, and APIs (XFN-74, XFN-134, XFN-115, etc.).
• Improved naming consistency and parameter clarity.
• Added Solidity documentation.
• Eliminated unused parameters in consensus/XDPoS.
• Converted appropriate variables to constants (XFN-123).
• Cleaned up error definitions and improved ExtractAddressFromBytes().
• Fixed typos and added missing comments.
• Separated v1 and v2 verifier arrays.

Network & Node Adjustments

• Fast-cancel block insertion when debug_setHead is invoked (XFN-142).
• Enhanced handling of future blocks.
• Fixed goroutine leak in procFutureBlocks (XFN-105).
• Improved masternode update verification.
• Enhanced QC verification logic (XFN-09).
• Corrected Block type immutability issues (XFN-82).
• Added validation for initial V2 timestamp.

Development & Deployment Updates

• Version bumped to v2.6.6-testnet.
• Compared V2 parameters across versions (XFN-45).
• Disabled config comparison during rollback.
• Added additional logs for debugging.
• Updated test gas limit parameters.
• Resolved merge conflicts.
• Added missing packages/imports (e.g., fmt).
• Updated package version references.

What's Changed

• update package version by @wanwiset25 in #1612
• consensus: use signer pubkey to check for unique signatures, close XFN-03 by @wanwiset25 in #1643
• Certik Audit Tickets by @benjamin202410 in #1789

Full Changelog: v2.6.5-testnet...v2.6.x-testnet

v2.6.5-testnet

What's Changed

• release v2.6.5-beta to fix issue #1353 by @gzliudan in #1391

Full Changelog: v2.6.4-beta...v2.6.5-testnet

v2.6.4-beta

This is ONLY for TESTNET Release

What's Changed

• console, internal: remove personal RPC namespace ethereum#30704
• all: fix invalid signer list on checkpoint block for trace api close #1185 #1186

Full Changelog: v2.6.3-beta...v2.6.4-beta

v2.4.2

eth/gasprice: reduce default gas price for empty block

Full Changelog: v2.4.1...v2.4.2

v2.6.3-beta

This is ONLY for TESTNET Release

What's Changed

• test exp timeout on devnet by @benjamin202410 in #824
• core: improve the output format of report block by @gzliudan in #827
• params: add Cancun blocks and improve the output of chain config by @gzliudan in #826
• upgrade core/vm by @gzliudan in #828
• core/vm: implement EIP-5656, mcopy instruction by @gzliudan in #834
• add backup rpc to cicd by @wanwiset25 in #835
• all: use types.EmptyRootHash instead of null by @gzliudan in #836
• consensus, internal, contracts: remove extra hash and string conversions by @JukLee0ira in #830
• core/state, core/vm: implement EIP 6780 by @gzliudan in #837
• implement EIP-7516 by @gzliudan in #839
• crypto/kz4844: pass blobs by ref by @gzliudan in #840
• all: clean up and properly abstract database accesses by @gzliudan in #841
• eth/downloader: fix 2 bugs by @gzliudan in #842
• refactor: more logs on countdown by @wgr523 in #859
• core/vm: implement the BLOBHASH opcode 0x49 by @gzliudan in #843
• common: refactor constants by @gzliudan in #846
• cmd/XDC: remove genesis file dependency for XDC init command by @gzliudan in #849
• eth: set networkID to chainId by default by @gzliudan in #850
• cmd: deprecate the --mine flag by @gzliudan in #851
• cmd/utils: deprecate flag --XDCx-datadir by @gzliudan in #854
• cmd/utils: change default value of some flags to simplify sync by @gzliudan in #855
• params: update bootnodes by @gzliudan in #857
• params: print chain configuration in more detail by @gzliudan in #860
• performance: remove extra conversions by @JukLee0ira in #858
• cmd: use slices.Concat instead of GroupFlags by @gzliudan in #864
• cmd, common, eth: copy constants after get chain id by @gzliudan in #866
• genesis: update genesis file for devnet by @gzliudan in #867
• p2p, p2p/discover: add dial metrics by @JukLee0ira in #829
• core: tidy up genesis alloc data by @gzliudan in #868
• common: update eip1559 block number for testnet by @gzliudan in #869
• cmd/utils: disable kzg4844 by @gzliudan in #870
• core/vm: enable cancun instruction set by @gzliudan in #861
• all: clean up the network flags by @gzliudan in #863
• core: fix special tx cause debug API fail after EIP-1559 by @gzliudan in #874
• node: warn when using deprecated config/resource files by @gzliudan in #875
• cmd/XDC, core/rawdb: add db command inspect by @gzliudan in #876
• cmd: remove deprecated flags --fast and --light by @gzliudan in #877
• cmd/utils: not set Etherbase when flag --unlock is set by @gzliudan in #872
• fix private devnet with private ip by @benjamin202410 in #879
• common: not copy constants file for compatibility by @gzliudan in #873
• core: remove the duplicate function getProcInterrupt() by @JukLee0ira in #885
• core: fix integer divide by zero in the function ValidateHeaderChain by @gzliudan in #882
• upgrade downloader by @gzliudan in #881
• cmd, common, core: optimize rollback by flag by @gzliudan in #887
• eth/downloader: speed up tests by generating chain only once by @gzliudan in #889
• cmd/utils: handle err returned by eth.New to fix panic by @gzliudan in #888
• all: update to go version 1.23 by @JukLee0ira in #844

Full Changelog: v2.6.0-beta...v2.6.3-beta

v2.6.2-beta

THIS IS TESTNET ONLY RELEASE

What's Changed

• test exp timeout on devnet by @benjamin202410 in #824
• core: improve the output format of report block by @gzliudan in #827
• params: add Cancun blocks and improve the output of chain config by @gzliudan in #826
• upgrade core/vm by @gzliudan in #828
• core/vm: implement EIP-5656, mcopy instruction by @gzliudan in #834
• add backup rpc to cicd by @wanwiset25 in #835
• all: use types.EmptyRootHash instead of null by @gzliudan in #836
• consensus, internal, contracts: remove extra hash and string conversions by @JukLee0ira in #830
• core/state, core/vm: implement EIP 6780 by @gzliudan in #837
• implement EIP-7516 by @gzliudan in #839
• crypto/kz4844: pass blobs by ref by @gzliudan in #840
• all: clean up and properly abstract database accesses by @gzliudan in #841
• eth/downloader: fix 2 bugs by @gzliudan in #842
• refactor: more logs on countdown by @wgr523 in #859
• core/vm: implement the BLOBHASH opcode 0x49 by @gzliudan in #843
• common: refactor constants by @gzliudan in #846
• cmd/XDC: remove genesis file dependency for XDC init command by @gzliudan in #849
• eth: set networkID to chainId by default by @gzliudan in #850
• cmd: deprecate the --mine flag by @gzliudan in #851
• cmd/utils: deprecate flag --XDCx-datadir by @gzliudan in #854
• cmd/utils: change default value of some flags to simplify sync by @gzliudan in #855
• params: update bootnodes by @gzliudan in #857
• params: print chain configuration in more detail by @gzliudan in #860
• performance: remove extra conversions by @JukLee0ira in #858
• cmd: use slices.Concat instead of GroupFlags by @gzliudan in #864
• cmd, common, eth: copy constants after get chain id by @gzliudan in #866
• genesis: update genesis file for devnet by @gzliudan in #867
• p2p, p2p/discover: add dial metrics by @JukLee0ira in #829
• core: tidy up genesis alloc data by @gzliudan in #868
• common: update eip1559 block number for testnet by @gzliudan in #869
• cmd/utils: disable kzg4844 by @gzliudan in #870
• core/vm: enable cancun instruction set by @gzliudan in #861
• all: clean up the network flags by @gzliudan in #863
• core: fix special tx cause debug API fail after EIP-1559 by @gzliudan in #874
• node: warn when using deprecated config/resource files by @gzliudan in #875
• cmd/XDC, core/rawdb: add db command inspect by @gzliudan in #876
• cmd: remove deprecated flags --fast and --light by @gzliudan in #877
• cmd/utils: not set Etherbase when flag --unlock is set by @gzliudan in #872
• fix private devnet with private ip by @benjamin202410 in #879
• common: not copy constants file for compatibility by @gzliudan in #873
• core: remove the duplicate function getProcInterrupt() by @JukLee0ira in #885
• core: fix integer divide by zero in the function ValidateHeaderChain by @gzliudan in #882
• upgrade downloader by @gzliudan in #881
• cmd, common, core: optimize rollback by flag by @gzliudan in #887
• eth/downloader: speed up tests by generating chain only once by @gzliudan in #889
• cmd/utils: handle err returned by eth.New to fix panic by @gzliudan in #888
• all: update to go version 1.23 by @JukLee0ira in #844

Full Changelog: v2.6.0-beta...v2.6.2-beta

v2.6.0-beta

Full Changelog: v2.5.1-beta...v2.6.0-beta

Support Cancun
Support solidity v0.8.28