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 0xa90c09ef5f4391ea9e656e8a5bc8097731632000f68256e4e43e1fdcb6f2f457. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcc398a8-111f-4053-913f-eba5e0ba9cba.json and https://artists.proofprofile.net/proofs/artist/fcc398a8-111f-4053-913f-eba5e0ba9cba.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 0x1a009169fb5c5f37ab186a689a4521953c59f411dd6a5e0937de2d7856c8db7f. 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/RSA221831522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e784144ac1c99df706cb5de60b3fe63d9a2376763e506e2b8337eafe52db528. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/RSA221831525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2892d446c520f34c128c4e700e1b310219aa7624f866bcc93052d08b9c418805. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:30:26Z), 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/RSA221833297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a8478c24c2f803757beee4361362b1b4603bc69e7bfe7dabe7c6b4b7deab4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RSA221833299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb320bafb6ea8a971ddbf62625168bf45b82684dd73bb6c167c48280d1e67ed50. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RSA221833300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78ff728ba85007a182d5a7df5a088915c9e0fc20fc4094806de6178fa4dabf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/RSA221991115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35b9bc88f4b069ecc2c82ba8fe6b88f428c54a6dc832e190f9ff33c81eba1a. 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/RSA221991084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1cb076dad35dace82eb58de63fee200cd67fc496a36f4e347cd77ff974b049. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/RSA221991116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02076b6bbf3614976a2e43788ad73b09d7baa47e0cff0da4c0b5c17623f2d2d2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RSA221991117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cfcaf20869865e8f2728012584483846c48b75cdd9ace005839cbf0ec5270b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RSA221991120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbd45053575d7e2af03db79e1c110ac820a218847c8bcb08d46a4cd367408ae. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:54:22Z), 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/RSA221991122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f860d9610c5336cbd860bf35daf01e9832ad2395efd7e7ae6da06b72427a57. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:06Z), 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/RSA221834510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf964f0c34f1697f45696a1b4c3b0c0461f3ad9cacb8c5612cd0affe9efce266. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/RSA221834513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d575e066cf8032bf15b000d8d6dbb2021da6fb8d3e2e9484ce47e144a3191. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/RSA221830844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68144ffb7eaa2d87d146c4f6823f95ac0d9a64fe3c92b0759c5a2118ca923f37. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RSA221830335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b052649b89adf13c54a03e004f6c726dfe365a4c2119a4e76a1f041484902c8. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RSA221830342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9608de940448ca7a32c50d881e82b7fb6f92352cb40ef25c23591d66838dff. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:19:37Z), 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/RSA221900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ba6f9a4347742c7e0d024274df9f9121e60ec3c99c8b17c273952357518d2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RSA221900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997df352e1a2f2a96528e92c6b8e1b86bfb0c5aca1bf2b9fc5149d72495b411b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RSA222010466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc918e2dc11ea66a65d4179843e435152de6154b99d6589cc9bf7a62e54fff18. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RSA222091913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6d3706281d95c6ca02efc51df15ac8ca7995a22e26626ffdb7f8c6061e3a5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RSA222190715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ae455dc720be835587ff30776e178905d3654b93b6e169c84e7ccfea531b15. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:00:01Z), 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/RSA222308840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eedb3c14f674856d99f54b4620c4a295f70ec2f5f03357eb4ca0aae1373adb0. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/RSA222309042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99043adae63cb599889e04e3dfdb8649a6cf30fec21b1e4ba398a04538603f0f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA222309043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a697d06b013999b2caf7f497e0a3c23630deea6091e2365bbfba286df8d5d0e. 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/RSA222309044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6034498f4cd14dcaa2ac3fb649dcaed176c4206df49c756a987aa2c82855716. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RSA222309045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc918e2dc11ea66a65d4179843e435152de6154b99d6589cc9bf7a62e54fff18. 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/RSA222091913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6ba6f9a4347742c7e0d024274df9f9121e60ec3c99c8b17c273952357518d2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/RSA221900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c22f79f18a58714bcf98906140a16f0158fe02a73d10f8625e9fdd7883628a4. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:37:25Z), 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/RSA222309049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c36402fd8abdd9432e0f504601fe9c194b848ddb2c0a3a5c643c98a9e238993. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/RSA042500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c1166dbf4bc648d20bd1b3365d0bb1a9d22ba1637b1f787b27fc8e050ca054. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RSA291600701.