Developer demonstrates eltoo state replacement on Inquisition signet
A test-network experiment replaced an old channel state with a later one using experimental script features, demonstrating a mechanism without deploying it on mainnet.
A developer reported an eltoo state-chain experiment on Inquisition signet on October 31, 2026. The demonstration published an old state and replaced it with a later one using scripts built around TEMPLATEHASH, CSFS and INTERNALKEY.
State replacement is central to eltoo-style channel designs: a later agreed state should supersede an earlier one rather than allowing an obsolete balance to become final. Testing that sequence makes a proposed contract behavior more concrete than a description alone.
Inquisition signet provides an experimental environment for features that are not Bitcoin mainnet rules. The demonstration therefore established behavior under that test setup, not a capability available to all ordinary Bitcoin outputs.
The result documented progress from design toward executable experimentation. It did not activate new opcodes on mainnet, establish production wallet support or show that every security and operational question around an eltoo deployment had been resolved.