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 0xc6febccb7638c1194be0dcdabbb912a59948ff9a0ee71c05fe7751108501d5b4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72f64d73-3bce-426f-813e-847a2b8d6946.json and https://artists.proofprofile.net/proofs/artist/72f64d73-3bce-426f-813e-847a2b8d6946.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beata and Horacio Cifuentes Present Oriental Fantasy, Vol. 9: The Heartbeat of Cairo
Beata and Horacio Cifuentes Present: Oriental Fantasy, Vol. 10 - Egyptian Love Affair
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a9621691977ba738f7cbd6c9941ab0fb0052b365ca6237e98022f6651cdb1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42157669.
Beata and Horacio Cifuentes Present Oriental Fantasy, Vol. 12: Talisman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f091ab87ea97aa6e083315bc5dfe6dafe18b8bc97684364b0642c16f92bde85. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42165128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d1b38770c4ddad4134ecc9e541ef81fc09ed407a4f09152d2eb8073acb7c9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42136096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dd2cdea96bd74814bceca110c10ad0460a5f6ee5539ddab4426babf70c2755. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42185095.
Beata and Horacio Cifuentes Present Oriental Fantasy, Vo. 14: Raks Horacio