Transaction broadcast

Transaction broadcast is the act of submitting a signed transaction to a blockchain node so it propagates to the network for inclusion in a block.

Once a transaction is built and signed, it must be broadcast — handed to a node that relays it across the network's mempool, where validators pick it up for a block. Broadcast is the final step of the send flow and the only one that touches the live network. Our tx primitives cover build, simulate and broadcast: the wallet signs locally and hands us the signed transaction, and our archive-backed nodes broadcast it. Because we never hold the key, the flow stays non-custodial end to end.