HomeCoinsCosmos (ATOM)Announcing the IBC 1.0 implementation release candidate | by Christopher Goes |...

Announcing the IBC 1.0 implementation release candidate | by Christopher Goes | Dec, 2020

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Introduction

Since the last IBC update earlier this year, the IBC team at Interchain GmbH has been hard at work finalising the 1.0 specification-compliant implementation in the Cosmos SDK. Working in close collaboration with our friends and colleagues at Informal Systems, Agoric, Akash, Iqlusion, Chorus One, Tendermint, and more, we’ve managed to squeeze in a few last-minute features, pinpoint and fix several bugs, add extensive unit tests, and document the codebase comprehensively. About a month ago, we finished the 1.0 implementation milestone. Since then, we’ve been engaged in an intensive internal code audit conducted jointly with Informal Systems, and just a few days ago we finalised and merged the last of the audit fixes, meaning that IBC is now ready-to-go for the upcoming ecosystem-wide Stargate upgrade.

Feature additions and bug-fixes

The last-minute feature additions have been focused on satisfying requirements of early IBC applications and paving the way for future upgrades of both blockchains utilising IBC and the IBC protocol itself. A few highlights:

Two-phase Stargate IBC rollout

From the perspective of the IG team, the IBC implementation is ready-to-go for Stargate. We’ve also been working in collaboration with Akash to update the Golang IBC relayer for the latest upstream SDK changes, which is close to finished, but further testing (especially from potential relayer operators) is most welcome. The Stargate proposal sequence itself is out of the scope of this blog post, several testnets are still in progress. Whoever creates the final proposal should note that several important parameters must be chosen — specifically, we recommend setting historical header info retention for the Cosmos Hub to at least a day, recv/send enabled for IBC to false, and permitted light clients to only Tendermint.

Get involved

Coordination for multiple testnets is still in progress — watch the Stargate repository and join the Cosmos Discord to stay updated. As previously announced, the Stargate bug bounty is now active and previous bounty amounts have been doubled — so if you have a clever eye for bug hunting, time’s a wastin’.



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