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 0x04f032e1d50c17b70f665b39ec8bb36297959916c90fbdc55098b9c0941737c1. 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/949331c2-41fb-42aa-b32e-f136a855de2c.json and https://artists.proofprofile.net/proofs/artist/949331c2-41fb-42aa-b32e-f136a855de2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Born for a Purpose (Aka Sons of Thunder)
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 0x03ab4100566b67ba718acf49e477e428d46f652241472ffd44cd151cd1abd99b. 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/QM2PV1795012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d736c8710c6739d6d337b8f6d66370c8c16473deaca8d242daf0c9c25b579b. 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/QM2PV1795019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5ceb3cbcccd70a37c7efd1e421d537ab6695307e863b6e68e80b2bc559a3d7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:56:43Z), 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/QM2PV1795020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846c99298130541ca24a8af404ff638be565e0203a870644e34d67de6462e1f3. 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/QM2PV1794241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfaaa5c00088a74a6aad98412cf1c7bd823cee29704e9a4819fabbea301d27f. 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/QM2PV1794242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75df257c728c89320b15c89023aab27731035a7b8dce7feaa028fac1346052. 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/QM2PV1794243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aef6c59a5fc69c4114c852241bf6d1a71b72381fed8733f70da6f834bf98418. 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/QM2PV1794244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb13cf6b5f4a04e90694b9a94316562b77628afb9769932bd9a78d8856f964a6. 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/QM2PV1794245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6180bd12cd4d02871bc1098b89fbe7a4e6b7fac062439acf5da4dc3c889f67a4. 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/QM2PV1794246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93075d67f70ab5c94f8378b30e924fb33b557bb8f7e251ab357943cee8a438ce. 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/QM2PV1794247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07743e786e1c0f207ef126b34a13c39e4931cbe0701314332aa21064da0eeffb. 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/QM2PV1794248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6f3962824f46aeeba3ad31cc3b27103b7f8889b7dee967470818da46611a1. 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/QM2PV1794249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e298ee9c054f38a196a78fcbfd5061be7b43aacdb40c904a7f2f4752cfd9be. 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/QM2PV1794250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb349682ae687e8fcd639581df8f0c2319ea7f5c7a8803ddea349c4fda3e872. 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/QM2PV1794251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e79f637c6ad03590e7a0bbf64d815762ded47869167ae0bdc3a02cc49ca92a1. 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/QM2PV1794252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069147c03eef86fdb1616c86326bcf1c6c5180511549515037eeed5e75b0d8a9. 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/QM2PV1794253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0097eb0499b8664a5f8a516422fa89593fd50c1c2094ffb1eb4fab11907a959a. 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/QM2PV1794254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c22341d78a05375f21aca573e1266bd7391becb01bad799b0d1dc8bf679e7e8. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM2PV1793988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a926a39936097e827b9fdae4c3301f42e41781dff06290b1cd8a276557e8c6a. 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/USVPR1800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea6fa15c4ac94e75f7d4a5fbe90ef2c4f0caae518479d028b7a5c11df8c862. 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/USVPR1800159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2d7842e6bb532d0a1eecc58d4003be54400483ad96b026541ac4bb5f9cdb67. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:10:19Z), 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/USVPR1800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf60e17521720f43e659caacee476acfb077cbadf6a9b78c37c94d46bee347d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USVPR1800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb69b4a9a31441c1b45162f0ce2108b2f3a8eb8fdc234ac1140ebca733cf470. 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/GBAPA7800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68c6034064608aebf8c0e9e192dd68027fa51c5b856f319b2e5dd69331ca8d. 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/USVPR1800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529d9edfdbd80569dd7a5da79f73eb1866384dfaaf0bf11a6c188670aeaeac63. 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/USVPR1800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8764a5253c57f2f7045d8f2f653affa07a51f2dab3c407869b5b4517d2284. 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/USVPR1800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c150e9ed9b136f21a47124916e0900d8705dd5e2ef812ef95015b76c0a3290d. 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/USVPR1800168.
Total Reggae: Greensleeves 40th (1977-2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087509174f48c986c178e1c644299315e511e906f8650358f3c88dea2b6c3d83. 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/USVPR1700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f0c9db36f50a662b35ea394ff10525e2ee08a7e6897670bba329a67990112. 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/USVPR1700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a25b01b7a3d301d881bd9a08e2f17d88b435d91b747f1ac1b0e4d1e137ea130. 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/GBBZV0551335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c7e33fb83185c696398ef2360085ff9eb35614b14b05758cb99da0c500eba3. 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/US2391312007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6013d18ab3a8c9130d313e6df7c8fa5167ca3a6b41d4c43bbcad7f8cd3bc5a. 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/GBAJE7200416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb27fc5e2e1a51805c056e577973b4e987f22c5837a0bcb6c265cb14c327029. 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/GBHQK0800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0797a0ed04c4379bf2bf6cb642fd3f61e27f508c143a739729a4c6ab6c7f13. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBAJE7100423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef1ad25be502b96ad8c12dc02b9cd4c3911b164fa2e70bf36153a7cb6ce295b. 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/GBAJE7100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06101dc510b9c3369e710c476322ed24839eabe9cee07e7d4024e7494d6d4f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:09:03Z), 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/GBAJE7300287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ae53e163bc2c2d295d91a9b72afc787ccc69d3d43951bb012d518f2811841f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBAJE7300293.