CELESTIA-NODE v0.34.3 — Mainnet Beta upgrade

Dear partners and node operators,

We are pleased to announce new version of celestia-node today. Please upgrade as soon as possible to benefit from the latest fixes and improvements.

Celestia-node:

This release supports v10 and Fibre.

Fibre client support: celestia-node now ships a built-in Fibre client, exposed under the new fibre JSON-RPC namespace on Light and Bridge nodes. Blobs are uploaded to Fibre Storage Providers and settled on-chain via an escrow-funded payment model — all driven locally by the node rather than routed through a bridge. For more details, please read the full release notes.

The fibre namespace exposes:

• Submit — upload a blob and settle its MsgPayForFibre payment on-chain in one call.

• Upload — upload off-chain and settle the payment in the background.

• Download — retrieve a blob by its BlobID.

• Deposit / Withdraw — fund and unwind the escrow account that pays for storage.

• QueryEscrowAccount / PendingWithdrawals — inspect escrow balance and pending exits.

Verified-header state client: DA nodes resolve validator sets and Fibre host addresses from the locally verified header chain (ABCI queries with Merkle-proof verification), so host discovery and payment validation don’t rely on a trusted gRPC endpoint.

Release notes: https://github.com/celestiaorg/celestia-node/releases/tag/v0.34.3

If you are a validator, kindly do not forget to upgrade and signal for v10.

Thank you,

Celestia Foundation