Stacks API
Live on-chain data from the Stacks network (STX), a Bitcoin layer that settles to Bitcoin and uses Proof of Transfer (PoX) — STX holders stack tokens to secure the chain and earn BTC: an address's available and locked (stacked) STX, totals sent/received and miner rewards; a block's height, hash, transaction count and the Bitcoin burn block it anchors to; the live Proof-of-Transfer stacking state (current reward cycle, STX stacked, share of supply locked, minimum threshold); and the chain tip, anchored Bitcoin block height and total STX supply.
api.oanor.com/stacks-api