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 0x5a217023b746b1f690e3ffdce419c8961c53675315b084fd089e88e88c82f857. 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/9586c08b-2cb7-4e2b-8c7e-d3a1e427cfbf.json and https://artists.proofprofile.net/proofs/artist/9586c08b-2cb7-4e2b-8c7e-d3a1e427cfbf.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 0xda93dbe13293ab44cb5ad389d5aea251b2ccf35dc568f221a046e70c4745b70b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TRA162100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999409011ce2cb333f979049fef3a4c26b56d96c299766b10604e30e863c47d9. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBKQU2180828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12973ad86d22d96384a483a391f0868821d43cc4d778bb3031ae807f709fd86. 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/GBKQU2194661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf074815c3d73d172028fe09f779813430fc8fe468e72fec2693ebd343e848. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GBLV62114753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39f4f4286e25b3401bc91395c03f30433dc8e94d19e361e51562c1f3d16dd64. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBKQU2215465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354401f3c1e900f46b05939276185ebb5432643a0da3aaaaf9a9de68a56c590b. 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/GBKQU2233082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd15c15dc339cfac6145ef1aac9f254c257706aee484959fc09626e9a53820f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/GBKQU2271825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833445d639aca50e3ec199bcb7667654c4b25370fe8a634b154ff3155c6eed52. 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/QZMHN2210261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ed84b8344aa23e34c8864ae22149535dca3d185d676fb7c7f5f7ea1929ffaa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:41Z), 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/GBKQU2284169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf165f7600371d3a3edca0bdcafb556cbaf2b0cc60c260a394cc393a281cfa01f. 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/GBKQU2323998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594dff18cdaf473f575734a4a0cc33ca8c237cd71accdac144ee182c19583557. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/GBKQU2385189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202a7454d4157cf62dd1f5ede800fb1ac5324ebdef777b5b0adeac2b764a8d1. 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/GBKQU2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a818d72393564291390857d1e33d77598f08132982d1828e9ff1c629a8cf7be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2456485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8315865aa3c9c4dc9b116fe03d34d6cb7529a200ac4b09a1041801ee8af4bd20. 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/GBKQU2466585.
Bikol Makan (In Every Place) [Nickobella & Carna VIP Afro Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ca0c009c4edd703916ae0f51e1bcc769602c5cb19b9e621043794f7ceb33b3. 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/QM4TX2225290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f4ab11ef840a2ddd2d20d22d60363ee91ca7af95ae09299caf68f57ea16b1f. 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/NL6WK2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7139a04ae7ff052b967c3d0c5e8d4cac652a95e31627465493632b12f2cc291. 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/FRS182169031.