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 0xf2cf38beb67706929d8d4d2e6cc551533c92ec06043ae90cfff7f5ee19df36a7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fd089bf-80c4-4a66-b202-803bea16a7fd.json and https://artists.proofprofile.net/proofs/artist/7fd089bf-80c4-4a66-b202-803bea16a7fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3bb58634baf121b98ebfcd5f37fdc82f365a58a6f4b6b3371b0eabc20a08c048. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM91668392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26d6a552ee33948310ffa7ff83b4cdbb7ad99c2d6ed0f0cf96775138b17bb3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ5AB1899359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65675d2b365caca25b8b2c17182e3acaded0bf0219f478721c0fd6972b3ed92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US7VG2056576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65272bb99d4b95a71d24eb257c12a0afb0474d10f0cd8d4306ba089f0fecb580. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJW2051860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14969fb1610cdc42b10fbe32cb6feb88214e63ceff8e81612c6dd8d599e0d9a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZMZ92045120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac9f05ffd9e855ab2c62ffe25b8208818ff31e7b79f25fe14e18e62ee001665. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMDA62267249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ed1722a7e9ae675503199b912fa4d0f8f6a8928a4956546dc90a445e6e0de. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM7282330443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d7412ff0291adc84a0b0cc98b64f22175b67d8f197f42b0ef452222408e80. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6N22434620.
Publicar Tus Besos (IntiMood Session En Vivo)
Bachatica En La Samaria (IntiMood Session En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c7316da7943e7e34052a74109ce834070eced742578cd62e673fbbff24559. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TW2539873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee0ecec40bc4253e7fbf2692b3e77f5727ee414dd2fe5896d608bbe9a7b417e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZZOPM2104755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dc2abd187502c0444ba3e32508f9a02288b45fbbb5c0fb367fca2f278765dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX762464166.
El Negro Cirilo - Los Nuevos Canticuentos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20617486fa5e08253dedf2741fc50beaf60b553ba5eed78a8c089f9107490f74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SGW502591252.