Yarimar Mercado Martínez (born March 12, 1995) is a Puerto Rican sports shooter. She competed in the women's 10 metre air rifle event at the 2016 Summer Olympics. In April 2022, her mother was killed
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 0x24f3a0f4e792148a8f1f626f693874215cc2fc72ff0e9d831aa6ab543bd2345f. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8caebb9-766f-41af-8ba7-df3bbb286614.json and https://artists.proofprofile.net/proofs/artist/f8caebb9-766f-41af-8ba7-df3bbb286614.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).