De Soto commonly refers to Hernando de Soto (c. 1500 – 1542), Spanish explorer DeSoto (automobile), an American automobile brand from 1928 to 1961 De Soto, DeSoto, Desoto, or de Soto may also refe
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 0x6b3ceb9469e1e6647e2b9794d61918872880171b943c2d89d23846060d532271. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b49bdad1-f0d3-497b-a251-12543796e211.json and https://artists.proofprofile.net/proofs/artist/b49bdad1-f0d3-497b-a251-12543796e211.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).