🚀 Release Notes

✨ Highlights

• EIP-1559 mainnet activation with full Cancun support by block 98800200
• 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)

Upgrade Instruction for Xinfin-Node

cd mainnet && bash upgrade.sh

🧩 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

⚙️ 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

🐛 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

🔐 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

📡 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

🧹 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

🏗 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

🌐 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

⚠️ 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

🔒 Security & Audit

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

📝 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.