Adriana Inés Acosta (Lomas de Zamora, 19 January 1956 – disappeared on 27 May 1978 in Buenos Aires) was an Argentine militant and field hockey player who was kidnapped by the military dictatorship tha
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57bf18038b87a322615e62eb49fdf3a40689cc77a6c57dfbaebf1cd70937e37. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b2e2f08-4a41-4c61-9d9c-f9fbce27ab20.json and https://artists.proofprofile.net/proofs/artist/9b2e2f08-4a41-4c61-9d9c-f9fbce27ab20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).