XION’s v29.0.0 upgrade moved onto the April 21 chain-ops board as exchanges published support notices and the protocol release notes showed security and proof-system changes.
This is a Radar item because the discovery value is operational. Users and teams need to know when deposits pause, what changed in the release, and whether app flows should wait for the network to settle.
What Happened
Bybit published an April 21 support notice for the XION v29.0.0 network upgrade. A separate HTX support notice listed an XION deposit-and-withdrawal pause at 16:30 UTC and an upgrade target around block height 20,665,000.
The XION GitHub release for v29.0.0 includes proof-system and security changes, including ZK proof/input size limits, additional verification paths and gas-metering work around ZK and DKIM proof verification queries.
Why It Matters
For protocol discovery, network upgrades are not only developer events. They affect deposits, withdrawals, bridges, relayers and dapps that depend on chain finality and proof verification behavior.
The release notes point to meaningful infrastructure work, so Radar should treat this as more than a routine exchange maintenance notice. Teams using XION should verify whether their integration touches proof verification, transaction routing or deposit timing.
What To Watch Next
Watch exchange deposit and withdrawal status, post-upgrade block production, validator communications and any follow-up notes from XION maintainers.
The clean signal is normal block production plus restored exchange flows. Until then, protocol users should avoid assuming deposits, bridge transfers or app actions are fully settled just because spot trading remains open.
Continue this cluster
The April 21 chain-upgrade ops cluster tracks network releases where validator timing, exchange pauses and protocol changes affect discovery quality.
