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 0x6dbf4053b5fd2da4ecd563e6efe6319dff9f635880edff24db4d0a470920ef5b. 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/094d1569-d943-471f-af89-0fbae88157c8.json and https://artists.proofprofile.net/proofs/artist/094d1569-d943-471f-af89-0fbae88157c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Andean Music Instrumental, Vol. 1: Panpipes
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 0x8b5821a2c43f920abfbbcf02dfb7833538aebf5109caa141c3b74a3357393b31. 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/USDHM1008654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ac14c9dbe35bfe307004b8a6418b765b9f37975a96f016ebf755c8d973cba. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USDHM1008657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa508ea0410dc126559468d78693051a834338898ecedff70878dd05de58c8684. 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/USDHM1008661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ec786d6b8f9c7a4e44c8743a81958c51bb1fc857c320c833074bf17f5e365. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM1008662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d4917268c84300e8d16c4d22fbb4a3e1bcbeb1525ebda683de15be04e0980d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:10Z), 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/USDHM1008666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37008b3859e58c5f6778fdf067e6a2c031085355904cd7ca89b7a8a30caf80d4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:42Z), 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/USDHM1008667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445f68b9b017b321e86b29d23da5e62dea0686dbd6a8d0c3166ceeffc6fcea99. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM1008668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b83ebd2bbe2524861a128538b5a6968d115844da2f3bba8e85e6090318a3af8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDHM1100686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ffd21f5326002f23b3e42501f6c1b501dd4dc5563d996cc46704838eb017aa. 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/USDHM1100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca5021df0e03f2547295ece6b53ba5972148f16eea0c259a67a15730acfcb1b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDHM1100688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb76c4e0268824f45e32ee717d1e08302f446e552777fb299eb08586fec9af97. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USDHM1100689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f13b010a1d7ce7638a688fdb56350a0c97a5bbfa582a79707dce9d4158202. 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/USDHM1100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039627f0d2204226e83ed0128506ed91a7824864ab125dc7be53b8c2be875f10. 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/USDHM1100692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a54b19b34af61a530f3afbc5cfc42b8d62660ecc00b26a0e52d642a7ee4c7f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USDHM1100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628384a4066b0c4a7b9a2fb82d7203b230df543b77f80758dbccf0cda3ed759b. 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/USDHM1100694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c1f5a6619694d1c45e6f6c81472a186884f310de5544fedd14f6f5f257790. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:29Z), 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/USDHM1100695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9320e78af5bacef7efadd8600d10c0a358bb5e65a112f5cc80e093a764fc624f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDHM1100698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41356124bf1b8f628947740aacd6e8505951b10536c163e81445d0ece402b09. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:30Z), 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/USDHM1100700.
The Andean Music Instrumental, Vol. 2: Panpipes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e121c2175aeefe0adf75a8c31237e25e80edd627756ddf320cf04c062e415c3. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USDHM1008765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c5418f3cf5aa96636d6cb96174ddb7c4f2c34205f9fd7b3a1d9bf98f93a962. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USDHM1008767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98e46df0379b48e6adf5ebcc1766527325533de4e4afa271d76295582b2b6e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:31:27Z), 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/USDHM1008769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5054a02d9462e3e0fa21aebb7e2fe6a19778408991bafefa3a5e886e4a9c1a02. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:12Z), 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/USDHM1008770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c427ec545b297cb0b96b5d175ffd22b3dcad638b1572c02f19f9a002f3b17be. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USDHM1008772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07e8c0fb2844be648ab2dd734a641de2b1af2c67c27891c5b5a16b9dfa9c959. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USDHM1008777.