Mainnet Ignition v0.18.1 – Hard Fork - Mandatory Update – New features and bug fixes

• v0.18.1 – Hard Fork Mandatory Update before block 466600 (446320 in testnet) – New features and bug fixes
  • QIP-5 implemented: Add OP_SENDER opcode.
  • QIP-6 implemented: Add btc_ecrecover precompiled contract.
  • QIP-7 implemented: Upgrade the EVM to constantinople.
  • QIP-9 implemented: Change difficulty adjustment algorithm.
  • Bump minimum protocol version to 70017 (active after the HF).
  • Increase the minimum target limit of pos difficulty (active after the HF).
  • Add support for OP_SENDER in createcontract and sendtocontract (active after the HF).
  • Fix for changing the gas schedule when a node is run using -dgpstorage (active after the HF).
  • Add advanced Qt wallet restore options.
  • Fix gitian build for the new dependencies.
  • Fix path string conversion for wallet backup in Windows.
  • Restore pid name from qtum.pid to qtumd.pid
  • Make regtest detection independent from fPoSNoRetargeting.
  • Fix a typo in linearize script example config file.
  • Fix a bug that could cause inconsistencies in execution results in some edge cases.
  • Add python tests to cover the new features.
  • Add recent checkpoints.
  • Update nMinimumChainWork, defaultAssumeValid and chainTxData.
  • Fix Qt wallet requesting access to contacts and calendar when picking data directory in OSX.

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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80768191ea9837e2b01d9f9f4660ddec5e4b126b8f3adf7b73c2355bf3e3ce87  qtum-0.18.1-arm-linux-gnueabihf-debug.tar.gz
70041865c38201f5c58f0663d0c92cf14543318f14a2f9abf62e2badb6bd8ed2  qtum-0.18.1-arm-linux-gnueabihf.tar.gz
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03e15dcf6e908ac82237ffbdb6abf1b5c2cd677770df3e80cdb39ac43978cd4b  src/qtum-0.18.1.tar.gz
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ac2dff3a3fe245d90f360f97e9f0a88371a247e04565b97043fe5401564f0f36  qtum-0.18.1-win32-setup-unsigned.exe
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20e1423e06b7c82403c3d8fcf9c83431879bdac887c412f4e46253b5ea08d164  qtum-0.18.1-win64-debug.zip
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03e15dcf6e908ac82237ffbdb6abf1b5c2cd677770df3e80cdb39ac43978cd4b  src/qtum-0.18.1.tar.gz
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27751c660ff45dc3ab196039bf7ea355fbd2a6fc55d83ae3d648691df050cd50  qtum-0.18.1-osx-unsigned.dmg
36800005c53268ffdbb572a1348d84fcdd8b5d7ad84f08152a6d82094d48c02f  qtum-0.18.1-osx-unsigned.tar.gz
7ef7013f593028f4ce277432c4175855964f1bbec34d9505ce087ff483f3f008  qtum-0.18.1-osx64.tar.gz
03e15dcf6e908ac82237ffbdb6abf1b5c2cd677770df3e80cdb39ac43978cd4b  src/qtum-0.18.1.tar.gz
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