All work
Protocols & chain data
Blockchain & Web3
Hands-on experience
Smart contracts, UTXO transactions, and indexers that make chain data usable.
Illustrative preview of the product.
Overview
We have built on public blockchains at the layer where mistakes cost real money: contracts that hold value, transactions built and signed by hand, and indexers that turn raw blocks into fast, queryable data. We know the edge cases, like reorgs, fee spikes, and transactions that never confirm.
What we built
- Smart contracts: write, test, and deploy
- UTXO chains: coin selection, fees, and raw transaction signing
- Indexers: block ingestion, reorg handling, fast queries
- Full nodes and wallet integrations
Have a project like this?
Tell us what you want to build. We reply from contact@opusheights.com.