Skip to content
Union Logo Union Logo Union

UCS00 - Ping Pong

A simple “hello world!”-style protocol for testing Message Passing (GMP) between two chains.

Chain A: Sends "Ping" to Chain B
Chain B: Receives "Ping" from Chain A
Chain B: Sends "Pong" to Chain A
Chain A: Receives "Pong" from Chain B
Chain A: Sends "Ping" to Chain B
Chain B: Receives "Ping" from Chain A
Chain B: Sends "Pong" to Chain A
Chain A: Receives "Pong" from Chain B
Chain A: Sends "Ping" to Chain B
... etc
UCS00 - EVM reference implementation Canonical UCS00 implementation in Solidity
UCS00 - CosmWasm reference implementation Canonical UCS00 implementation in Rust