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feat: Tac/v1.6.0#73

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AkKoks wants to merge 27 commits into
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tac/v1.6.0
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feat: Tac/v1.6.0#73
AkKoks wants to merge 27 commits into
mainfrom
tac/v1.6.0

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@AkKoks AkKoks commented May 11, 2026

Summary

This PR merges v1.6.0 into main and brings a major TacChain upgrade from mainnet v1.0.4 to v1.6.0.

Key changes included in this merge:

  • full EVM stack migration from the internal evmos-based cosmos/evm v0.2.0 to upstream cosmos/evm v0.6.0
  • Cosmos SDK upgrade from v0.50.15 to v0.53.6
  • upgrade handler for mainnet state migration, including EVM KV/state migration and compromised vesting account rescue
  • support for newer EVM/Geth capabilities, including EIP-7702 and EIP-2935
  • TacBuild-specific functionality preserved and adapted, including liquidstake, epochs, ed25519 precompile, and gTAC ERC20 mint/burn events

This release also removes deprecated legacy components such as x/params, x/crisis, and the obsolete feeibc store, while keeping backward compatibility where possible for operators and existing chain state.

@AkKoks AkKoks changed the title Tac/v1.6.0 feat: Tac/v1.6.0 May 11, 2026
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