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 0x3e6f7adf3c14a1959a931077156c516ba849a348ffdcbcabca24b17fa874bda7. 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/c047db5b-cc45-4e10-8683-c40910fc6ea8.json and https://artists.proofprofile.net/proofs/artist/c047db5b-cc45-4e10-8683-c40910fc6ea8.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 0x0d90fe7248b33a24769ffef077563b30b8afe0741faf3e19af300714ef59f52c. 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/GBKQU1933563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9b9e1144e83bee8c9b9244ba14b778edeec110db4f6405732a273894fe25c4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:11:13Z), 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/GBKQU1939934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad722582d616c2fa0f3ca485ccc97e2bba2f440ec50c6a925f27614d23dabed3. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBKQU1954910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f8157f6058dd25f50f685ed04cd7d8c15817805e4988f5446f8fed90787956. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBKQU2232549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50482b4c53c1eb8ec73e89fa98932b1c71b0179d99a3f5c5c385577e50595610. 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/GBKQU2236184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16277aadca93d08a7111f6c451a76f8f9582e1cb3a0866b79987a7569119bd7. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBKQU2339081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbd698c0fcdebc84daa3452be831d76f870f0904da04072e1105ba8d0975baa. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:36:21Z), 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/GBKQU2339088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf275ea71198a6b839a7621c60038b8ce368872db9a166e3605034b02425c1807. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GBKQU2370968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3b1a4e41f6603bd1005963dcfaec198ed6c54cef0eb7a3782cbf0908054d79. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GBLV62309608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9539cde75198d7670c17a87fe8ae6817d0bb09123864fc50beb43524a84b816e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBKQU2499575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1d20196f3f9d954ae836b792d3a853171d8d3a48365fc24c8dc62480e57a21. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBKQU2499576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cb2d1d5f255adee823e546e80f847795e86b16eb805b9599f302266113ec1a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBKQU2499577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6defb7ba01aada7a0ad40902e4599c86d7d5cd4726e1123e1fe027e98b4e5809. 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/GBKQU2499578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a2341c18cb7093250b50e31ce6d459eeb9262a699a890ace29952d3a89ce7a. 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/GBKQU2499579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2afa33bbff1a0dc6ff3cd0a6ed97bd544a54df56addce5868371401acf86b7. 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/GBKQU2499581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb318ed8e0db103d6a1740587ec2a8534863aca9320f2dd673b9f998ed17737a. 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/QZTB32537768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7292897b9e170906adff0b1483e22a94208c880638c09ad076a50cfd5edf5e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBD2522337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35924ecd31cb9d7afe5c1534b54c876ed8edeb9546ceff6fcd8bfd78803503b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBKQU2499589.