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 0xf47f1bf7e996c955449f9a8f5e56e983a356077c19113f400920833697bc9f38. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b33b1b4-5638-4279-ba90-45bb7daea336.json and https://artists.proofprofile.net/proofs/artist/4b33b1b4-5638-4279-ba90-45bb7daea336.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 0x44fcdddc70aafe2899e4d92cdbeb498777c3f44361d239d51395afc384edf7c7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITO952100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd7e05c7b9fe728d06afed9ba7c2a7fb6dc1b71b90e9d7233e088cdc639761e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ITO952100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d6c1b2b8ab788c33d14935673b3de242a8fbbfaab4be4bcf604034564888e. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ITO952400001.
The Bad Guy (Music From The Amazon Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda5321744388e5af5a0406eef6bd0e565647b24892a69b34dbb7cf1ecccaa4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITO951800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcb840407cb544e0f54985e5047678ac8f3c5ec7f0ffc995b4605166696940e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IT1F72100066.
Non mi uccidere (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf39e72f40051d36ed45d3462151cbe8e36da6cf06469ba5ecee10048080d47. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IT0952100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9de74feb04616dfecad75ab209ad7ac8580fb345c69cba4ab5043214a2b8c6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUD52100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb7ccbd7499f2ceb99c2f6a92cff68840d7e7ea15212c3054ae997ec7d47cad. 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/ITDF42000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938dbe1e57b27c269b05a6237eabc2e94ae9d3b42f09bc900604ee8930755e36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM71900326.
Sciacqua La Bocca (feat. Chadia Rodriguez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323023bee49a5a6b39cbfc9cf1e52b45d3aca1edf76a8468a2740b545739c9e. 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/ITUM71900839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f136dcec0bfe3eec82e8d7d36323fb192a82426e95d28c7b89c2296d39ed52b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITB001900698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f136dcec0bfe3eec82e8d7d36323fb192a82426e95d28c7b89c2296d39ed52b. 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/ITB001900698.