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feat: bump evm to v0.6.0-tac.12 (tac_simulate rpc) - #89

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AkKoks merged 3 commits into
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feat/tac_simulate
Aug 5, 2026
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feat: bump evm to v0.6.0-tac.12 (tac_simulate rpc)#89
AkKoks merged 3 commits into
mainfrom
feat/tac_simulate

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@AkKoks AkKoks commented Aug 5, 2026

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Bumps the evm fork to v0.6.0-tac.12, which adds the tac_simulate JSON-RPC
method: an eth_call-style simulation that also returns the emitted event logs
and a gas estimate computed on the same overridden state, and reports a revert
in the result instead of as a JSON-RPC error.

Served under the tac namespace, off by default. No consensus change, no state
migration.

Also: localnet enables the tac namespace, and docs/CHANGELOG-v160-v161.md.

Tested: built against the published tag, 23/23 e2e against a local node.

AkKoks added 3 commits August 5, 2026 19:34
tac_simulate is served under the tac namespace, which is available but off by
default, so the localnet has to list it in json-rpc.api to be able to exercise
it.
Brings the tac_simulate rpc into the tacchaind binary. It runs the same
simulated, non-committing execution as eth_call, but also reports the event
logs emitted during the simulation and a gas estimate computed on the very
same overridden state, and returns a revert as part of the result instead of
a JSON-RPC error.

Served under the tac json-rpc namespace, which is off unless listed in
json-rpc.api.
v1.6.1 carries no state migration, so the release is entirely what the two
forks bring: the vesting-locked delegation fix in the staking precompile,
historical EVM queries below the v1.6.0 migration height, and the new
tac_simulate rpc.

Follows the format of CHANGELOG-v104-v160.md, with a per-commit breakdown of
both fork bumps since the tacchain side is only a handler, a dep bump and a
resolver wiring.
@AkKoks AkKoks changed the title Feat/tac simulate feat: bump evm to v0.6.0-tac.12 (tac_simulate rpc) Aug 5, 2026
@AkKoks
AkKoks merged commit 2410205 into main Aug 5, 2026
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