We at Interchain GmbH are excited to announce the release of the callbacks middleware. Now, smart contracts and modules can seamlessly integrate with IBC applications like ICS-20 token transfers or ICS-27 interchain accounts (ICA). For the first time, application developers can compose their smart contracts/modules on any of the 100+…

Relayers serve as the backbone of IBC. They ensure liveness of the system by transporting data packets between chains. IBC relaying is permissionless. It can be performed by anyone willing to run full nodes of the chains that they wish to relay on. However, doing so incurs costs. And prior…

Today we’re excited to announce the release of ibc-go v7.1.0, the first minor release in the v7 line. v7.1.0 adds support for localhost client and ICS-20 state entry for total escrowed amounts. This builds upon the client refactor that was included in v7.0.1. This blog post aims to provide an…

Summary ADR-8 actor callbacks introduces a standardized interface that IBC actors (modules/smart contracts) can expose in order to call into apps like ICS-20 transfer or ICS-27 interchain accounts (ICA). Transfer or ICA can implement the optional CallbackPacketData interface to support actor callbacks. The CallbackPacketDatainterface for both ICS-20 and ICS-27 have been…

In Feb 2021, the Cosmos Stargate release brought the Inter-Blockchain Communication (IBC) protocol into the world. Stargate was a set of upgrades that implemented the original vision laid out in the Cosmos whitepaper — to build a network of sovereign, interoperable blockchains. IBC is a general-purpose, message-passing solution that allows…

Channels are a crucial component of the Inter Blockchain Communication (IBC) protocol by enabling application to application communication. For developers implementing IBC for their apps, it is useful to have a strong understanding of channels since it is the layer of abstraction that they will interface with the most. In…

Channel ordering, handshakes, timeouts, and more — Channels are an integral part of the core Inter Blockchain Communication (IBC) protocol. They serve as a conduit to transfer packets between a module /application on one chain and a module on another chain. For application developers, channels are the most important layer of IBC abstraction to be familiar with. …

2022 has been nothing short of an eventful year for the Inter-Blockchain Communication (IBC) protocol. From new chain integrations, to features and improvements, IBC has undeniably cemented its place this year as the gold standard for blockchain interoperability. The Interchain continues to thrive. And the developments this year have reinforced…

ibc-go v7.0.0, tentatively scheduled for release in Q1 2023, will incorporate the 02-client refactor work. The refactor aims to make light client development significantly easier. The security properties of the Inter Blockchain Communication (IBC) protocol are defined by the security properties of light clients (see here for a primer on…