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 0x67b8d068d934cb51785f810541d409fb685bafa17fb501e8ab6ec34b3a24afd7. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4f016f1-ecb6-4bcf-84d4-f86f582e3dfb.json and https://artists.proofprofile.net/proofs/artist/e4f016f1-ecb6-4bcf-84d4-f86f582e3dfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ritmos Latinos Paso a Paso, Vol. 2: Merengues
Ritmos Latinos Paso a Paso, Vol. 1: Salsa & Son Cubano
Ritmos Latinos Paso a Paso, Vol. 5: Bossa, Samba, Bolero, Balada & Swing
Ritmos Latinos Paso a Paso, Vol. 4: Guajira, Bachata, Vals Peruano & Tango
Ritmos Latinos Paso a Paso, Vol. 3: Cumbia, Chachachá & Mambo