Bitcoin is a proof of work Layer 1 secured by SHA-256 mining since its genesis block on January 3, 2009. Blocks target 10 minutes, and settlement is probabilistic: many exchanges wait for six confirmations, about an hour. The chain averages around 6 TPS, and median fees ran near $1 in October 2026, so most small payments move over Lightning. Taproot, active since November 2021, added Schnorr signatures and cheaper multisig. Spot ETFs and corporate treasuries have become major holders, while Ordinals and Runes still compete for block space.
GetBlock runs Bitcoin Core nodes on mainnet and testnet, with JSON-RPC and REST on one API key. Dedicated Nodes deploy in Frankfurt, New York or Singapore for exchanges, custodians and payment providers, and Limitless Nodes give flat-rate throughput from 25 RPS in Frankfurt. Crypto AML Check screens Bitcoin addresses and transactions for sanctions and illicit funds, and GetBlock holds a SOC 2 Type II attestation.