Gerónimo (, ; June 16, 1829 – February 17, 1909) was a military leader and medicine man from the Bedonkohe band of the Ndendahe Apache people. From 1850 to 1886, Geronimo joined with members of three
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7781b268170bdac466c1b96aa6bd4b653558af51e309c315ab2beecb93c2afc0. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3fe6a927-37ab-4924-9518-4e6c1d71633b.json and https://artists.proofprofile.net/proofs/artist/3fe6a927-37ab-4924-9518-4e6c1d71633b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).