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 0x29379d28dfdcefe75c8e1eb0924e75046a65ca3d9d3027f3babbf678475319f9. 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/96bf917f-bb79-4fe8-b31e-11e64e943270.json and https://artists.proofprofile.net/proofs/artist/96bf917f-bb79-4fe8-b31e-11e64e943270.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 0xc925c10ecf1181a34e041422daec22f1c84cab5fdb62ea798850d1c71d1f8997. 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/JPG101800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a6446659437ba2fd71295c0e8b49dbfd888eab268403c26aa0f2b4bef575a7. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPG101800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb637f3de7a04a537a46ef49e0854ba56f657569fd9f8da85bd58f95291e37a3. 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/JPG101800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc280ad5706d0f1fd5b496a39976109eec270d04837d9606a7f031a03962a3b4f. 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/JPG101800152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63c0efafcd6a48d0745a910c293d1bd5acfdf1a3be501509982fae30b3dadcb. 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/JPG101800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044d11123fff6e17fe4d6750ab2aec29882ea58d78f393de411d0fc458b663fa. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:50Z), 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/JPG101900384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa980a5a3d0f06e4a5d67478dc24ce2a6cf232e08a2e74cb3d2a0a640f4bca73f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:02:10Z), 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/JPG101900514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e833fb2c92bf6ce822fbb8aa000a7ea51c962b5ac75c94f013572f460f54f4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPG102100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da944796ea18688934c4f72fb52c3c97c6874444d7b68d329b61a3ef94fa571. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPG102101386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caec0ef8476bfd439571fe793de17a5387efb7f086fd4deca989b8db3025c0e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPG102200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb29cb4cf57bd636177f19cf9440670f58ada41f5917de27a502ea684e49d8. 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/JPG102200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3936593e47c39b53df457d1adfa5984481be3f166dee8971272bb9a80c330b0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPG102200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa2623529be777a37babe96a6a938a9c0f077bef85b9ca03022ccbe776805d. 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/JPG102101154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ed164ca1bcde7b590932198f90aeb20f072a4d863037304d3def4f59d3548e. 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/JPG102200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e15dfcb990209c90ee274fad49581359eeac99d24e490c66381e4dcbee77b28. 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/JPG102300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62e0455b75ff4b4076b24ae1d69d6190ed2c6b6cb13c919e32bc95e08ef58d2. 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/JPG102301452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552bc44c205ddb16600ab86afd566c3a3e6b90af8e447b2b713aef492cdb8491. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPG102301568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed288e270127ae179976f851c0360319971cf181b08d3c448ab62c245c801d9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/JPG102301570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646f572a2389bca2485e28cdddbfe2521d3b319b5490d0f3b9c89d5d37c87ed7. 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/JPG102401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45554e5fd9bbd6af2ba83c0a2242b4c4ec1c4d02666455e4b8850c9c1991989. 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/HKG731647229.