qtumproject/qtum v27.1

Qtum Core v27.1 – Hard Fork - Upgrade to bitcoin core 27.1 - EVM Dencun - Improvements and Bug fixes.

on GitHub

• v27.1 – Hard Fork - Mandatory Update before block 4590000 (4510000 in testnet) – Upgrade to bitcoin core 27.1 - EVM Dencun - Improvements and Bug fixes.

  • Upgrade Qtum core to bitcoin core 27.1 including updates from 25.2, 26.0, 26.1, 26.2, 27.0 and 27.1. Main highlights:

    • Support for v2 transport protocol (BIP 0324).
    • Use descriptors sqlite wallets as default.
    • Support CoinGrinder coin selection algorithm.
    • Support v3 transaction policy.
    • Miniscript expressions support in Taproot descriptors.
    • new RPC calls, including: loadtxoutset, importmempool, submitpackage.
    • Improved GUI wallet.
    • Improved pruning.

  • Implement Dencun EVM upgrade. Main highlights:

    • Optimized Data Efficiency.
    • Gas Fee Reduction for Layer 2.
    • Transient storage opcodes (EIP-1153).
    • BLOBBASEFEE instruction (EIP-7516).
    • MCOPY - Memory copying instruction (EIP-5656).
    • SELFDESTRUCT only in same transaction (EIP-6780).

  • Update nMinimumChainWork, defaultAssumeValid and chainTxData.

  • Add recent checkpoints.

Fork ETA: Mainnet: Feb 15, 2025, 7:28:14 AM UTC | Testnet: Dec 31, 2024, 6:19:16 PM UTC

*Note for Apple Silicon: Guide to self-sign and run Qtum-Qt.app on macOS (here)

Hash validation

If you would like to validate that the binaries you download are exactly the same as those provided and built by the Qtum team, then you can compare your binaries to the following sha256sum hashes:

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