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 0x824d04535459c043798dcbcce09fbbaa50721b51ef68c610926860fa560956e5. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c823d3b-b81a-4c7b-aa3d-b1479e617ceb.json and https://artists.proofprofile.net/proofs/artist/2c823d3b-b81a-4c7b-aa3d-b1479e617ceb.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 0x746ba67fa3406b6ea77657645b62b90cb6d40aae2f3f3c0edb818d7a85189797. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ITSFT2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298cca77a29012b1dd0c6de479d555fdebb458ad8863cab1e1b098ce796286e1. 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/ITSFT2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1758e62e8b16feaa69d62f2050a54b3be82d70e2ec08fa9271baf218482f680. 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/ITUD52100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ea96c2239bf95abea66669f4e88d64ed2202a5840c539bdf0b25482d89b3e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITUD52100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bff3760913d67d0e8f152d9bcdba62b9fc874a4fc674cd10278ce4b3fb7b3. 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/ITUD52100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedecc4574221a1ced17452ba098d4a092e705902a73bc4f1c40db031b8576656. 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/ITUD52100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51eda48893a80886726e88e2422505b4dc00ecbf6f4cbb2b73b522b661be098. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITUD52100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35017b91d7d1f7abcda5f97cc11440cb41468e8dc1dffc1200114c6e943371c. 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/IT7KF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfb3cddf4136b92569b186ff940588c54ce68cd78687bf0337bebe88950fe6f. 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/ITSFT2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ca007bacb04f957846f989584aa77ca6f1f86a8ac95bd0b0c2f329152ba48. 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/IT7KF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599c38855ff63fe4ed61f94e8a050a5fde4be1133ddb707928ce2b961a0dda79. 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/ITB551915515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622cfb7650b76912338f93fe2c851db29117aab48e47ce60aa263c6ea146e1bc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR2X41958900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa863eee1d1301b8ba9c6a3b73205de70a4f759f55e8719145ad68a2277e906. 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/ITB551915517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2406c5331220746f13dd7676de7c70d6b18b5b2a81b55505ef1dd280a6b66de. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITB551915518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef6b8a9ecc88d9b95b5b655e4eb1415b40786a1ea4b37e669a6c3b75e096346. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITB551915519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774565b120ae78b7af34dd5dda50402661a256085d3847818b7f3ef40d26229f. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/ITB551915520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6f84e170a6a9e751ee01af07304b065ac4e339973f5d8497517c0dd9bcba38. 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/ITB551915521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28562de729fbfa70502f3ec6db4b1ff3350ac2de9d77b3c21487213b8c7ddb55. 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/ITB551915522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13335e378f1a8788831579a12d7f8b689aaa4573755dadd1990e4b72c1be2688. 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/ITB551915523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229a067a7f20f718e572ece7a18f8cd8571df68eb98098df2f6171a8960af44e. 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/ITB551915524.
Oltre la soglia (Colonna sonora della serie Tv)
Quando il bene ci fa male (From Oltre la Soglia: Season 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a30675d65eab0056e0524161fd249022c0a0822f1bd6b72743c83437d0b410. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITF031900606.
Sto già meglio (From Oltre la Soglia: Season 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74856d9d4d69f918dd54a04c1c64a3254a7f8d44a1cf47e75955d61e6011960d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITF031901586.
Starò bene (From Oltre la Soglia: Season 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1089fbe4a76849da92528c855b964c0b25b8d23eb62a01f4f55e6c7bf94ae1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITF031901694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf7705b27cfd4c4e63ec360a0a5d5a7a0200055c8e9691e6981eda7bcba7a5e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZMEP2417134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ecd70da82ed2c57a12525bb1ff97d865cb35ff884a07fed9456c8d93e3835c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAEY2078596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a3aa32ff58773964d0d6505c7f6b21ba602a224e7a3b9c8c6faf24aeaf3911. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZTB42311500.