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 0xeb56a0b2c4dc8aa4fc434802f6037582b812f152de7698cc37d9a2298920d92f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7470ff1f-702e-4ae7-be62-ddfab7fac132.json and https://artists.proofprofile.net/proofs/artist/7470ff1f-702e-4ae7-be62-ddfab7fac132.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 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 0x2124258b638649e1f31c12802c32a29680745fedf48a8314604a0878e6153935. 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/DECY51101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10082eee6b31af73e2831c412ab2392f44caca6d59c08f5eaee81d45b625e07. 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/DECY51101205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b7866381dca49bb4eb256be2b7a4724a07a19e9befbbbc0d302362720f9312. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DECY51101208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dba01614eea9e49888ba5099ffd9909a41bd7fdf3ec2f467ddd2ce84ff99f89. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DETB31646014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0fbd19811f5e3d0aad5355417b0e253a52602d8d9bc6c9789dd2847aa0b354. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DETB31646015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fdf3fe1e13b53b6cf4465226938752498edd49138a7818273a86d05183385f. 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/DETB31646025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e1347710e1406c87f2ffa8c1dd359f3a4a7e7147ee04743a2e551876a75ccc. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DEVY91900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5256942677a662287a6b53933dfda2022d1e173fc5c02d344992c978c2e4f5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEVY92300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee7cc061d5a6c87120e6dccf0ec53baf43cf78d43513354db35507ef877b1fb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEVY92400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c52197bb540b6fc1c19b13ac2c696b79d0e63382e0569fbf993d6e827edbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEVY92400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0ea32429ba529fecf6b12b54de88e68ef1aa7f20557e2aea12b27a834726d. 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/USC4R2003104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aca43230801521a66451c1172f4c7ed36654ee69151a54ad41a34f3f78b027. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRS712000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce385b30b41f154d47a0d34d03d8cf25dea93bc48d35cb80f54f93e5fe5e9beb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USOM81152102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8bc26faa8e6d10d4ce1810271f78af899cba9a9a785e681156be6857bb471. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCABR1352646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce385b30b41f154d47a0d34d03d8cf25dea93bc48d35cb80f54f93e5fe5e9beb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USOM81152102.
Future Disco, Vol. 10 - Complete. Repeat. A Disco Drama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08debbcf0e39665dcfeba7f2f85479c0ee720abfd2b4531f9544516c373480e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMXZD1100074.
Savannah (Tiger & Woods Italovision) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765e56b9cb157cf67cebe2ee801609bbb22444e62b0b3ce71729a18db1c19ec2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6QE2215925.
Savannah (Tiger & Woods Italovision Radio Edit) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d08b3350f1f89d185255bfd02c2f7b9330c6709b8347dc545e307d4b04209c2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SE6QE2215926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c1c768c2798f9dc903d23cda3991d923299d2aa171087f5741d0ae34cd34c7. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USA2P1900060.
Get Closer (Tiger & Woods & Gerd Janson Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a938a5a9dc888cb0275f65eac1e70bccf0b7bd86c8be5b942c588d259ce6b5. 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/DEA311707143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2124258b638649e1f31c12802c32a29680745fedf48a8314604a0878e6153935. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DECY51101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5175910f80dc4234b7519b631ecdefe992f4cb0684013699c7f44cf506aad05b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DECY51101203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450485a0c2e93c5a94d3b7f7adcb0d2806d866b68d92e481378f71c1e1464f8c. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DETB31646022.
Dos Attack Presents: International Space Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884f0a9be35d1a4e53d8b1404b3b0217917d68af3d6163d4f499c7b3e4dbb519. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLL561908356.