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 0x045c2c91be89a923ca0dbbe972cc669e00eb4b829f8ac087ec3be273be95ea34. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8922c512-037b-48ea-a7c6-033e7602dc4a.json and https://artists.proofprofile.net/proofs/artist/8922c512-037b-48ea-a7c6-033e7602dc4a.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 0xe10e16ff9afc998eba3ca6db1832034d6bc64efdb8e8a6fcc7439a2f7a624641. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/RUA1H1872700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2ed91a3a57974a2e4e0bbc048518ea96527a13b4d1839aa95c31555a97516. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZAKB2348363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601cbabd1056c26091b5c0cff28982015f9f2d8708919cd736103a7a8cd8c0e2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZAKB2348364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44558e06712618cdc83251102b6573bcc6a7d8a408e1edd001d6ee833f3725. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZAKB2348365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd47542046b9252b2aa13f3b2e4b4f57cb91990d4310fa77ab2c485e5aad6c1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZAKB2348366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab14bc905e910c8b549000f7dddb4d67a7ff52f9f7b8c7f8448efaa0712c2fb6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:47:42Z), 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/QZAKB2348367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd886831eae288eac6a41f90e1f52e8313c147ff41aa0dc5cf604f2862e3d131f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:50Z), 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/QZAKB2348368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1b63b5ae2d7f04077f777889607df37201d03eb0b184e59dce63cb068740f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZAKB2348369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244328ef6ab3f5d9b2e4af2777a93bba7fcfcbfe2e24a2e088036e008baa853d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZAKB2348370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceed0747994a749d17825af79fffd0f22ce076ba9fbe600f1539e1d96c01910. 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/QZAKB2348371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6888b204b62158ded5c23be02498d0308818032d8324b10cc16bac60fc0266. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZAKB2348372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41109828c24925a8d7bb0d69a7945b32fa3c1b5d5ca07ab35ce03590d61fe857. 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/QZAKB2348373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fac6361b980f7011c015ee11f099ccc9c1840a78223674f57ee7f9f3c19523. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZAKB2348908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fa118aab82209243d6bf7f28bb91e5c41cda5b0df2f267e2f429ef10469e2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZAKB2348909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a186510d8d44bb988aef25b201a2acdf94c699e17ec2fa9a6ac689afb5e7cf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZAKB2348910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f28567551f4046247cbcb05d0a6213323b480606b888f4249b6802ed9bef86. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZAKB2348911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66ca488423dd68018a5d4d4ac36ab7b756e95a5c6a95307ac5c15c8187a6f16. 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/QZAKB2348912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8489e49c674cf1678ccbdfcb8f63cc7e811c532f988bd565c4505151a954651e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZAKB2348913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aee7d995e3bdaf17c9c21f3166167e44eb83e0bcc62ddb36da510f9b004b23e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZAKB2348914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e03baf92ccbce7ddf13154cc4350a37597c6e3271269bbeb59054ee461d46a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZAKB2348915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e105a097a93d84ed9a28fe2c191bb3158406064297ce48f1a54556efff5cbf. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZAKB2348916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8bdcb33843d5dccb34191092bd8579477fdc51b0cda8ffc1ac4524a80aaa9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZAKB2348917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968f8997528ab2a836072a28f4e787ef23f8531e431bd7a6f01ce9a4f3b6411. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZAKB2348918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a95f2555c95f29cb1d25d5a451b05b5f0eb4e343033a3f2d67c066dc0d2a359. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAKB2348919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5622b01f3013542e3e5d9b82d5917efbc1905f7c7d5cb7ca7deec421d724b69. 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/QZAKB2348920.