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 0xad6e51d7e9fc2ef66a4abc597deec0223936e27387beb4bdff28eeec7f1db8f0. 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/ccb7472e-1f63-4779-9917-54e0e9ef1cc4.json and https://artists.proofprofile.net/proofs/artist/ccb7472e-1f63-4779-9917-54e0e9ef1cc4.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 0xceba71fe02a76eecade8c7551d0efd680b4e58ef2086e56e5dffb51d004202df. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMER2057648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973ad8dcf89728d3c391580a43e441cd63fbaab5fe844d9c29a35cf5a9ac096f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZES82183190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b21e765b40bce26641aa47624768d6e8813931e729cf9f821c5be77ede872a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZNWT2281939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16f487ac069052ca88ed7feb552b3781a0393df10121fd84e66f5e50f4406b4. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZS7J2244817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2715a70102559192d68778e24e46b7f5b090bfef3d4bf6a667e06631344c8329. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA72333528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a138720df9c07187c824a944034d08b141af1becf6f1fee0c1f5d0579ee848c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNWS2344084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950836b527ed7783ebd18b805e715354f263794ecfe6d4eab57286cc33f1948. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZPLR2334874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1add44725065df3b13a2f4c579475737aa79affd01ca768a8d8fdf78d6539cf5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:43Z), 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/QZTAY2362135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53af30b6205fb388b04944da183854fd1b018b459b6b31d5f68eb5e2cff84b22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ42450397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681af91ca4a8eabde3ba3ed2c38bcb201bdc1a41fb18ca9944cca48dd2b01b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ42450398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479e90b960dbffce11059115ee61680a546c54a81a0239fdeffee2fd8b865a17. 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/QZFZ42450399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53af30b6205fb388b04944da183854fd1b018b459b6b31d5f68eb5e2cff84b22. 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/QZFZ42450397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6681af91ca4a8eabde3ba3ed2c38bcb201bdc1a41fb18ca9944cca48dd2b01b4. 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/QZFZ42450398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479e90b960dbffce11059115ee61680a546c54a81a0239fdeffee2fd8b865a17. 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/QZFZ42450399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8594c88b1218e32079971739724129fb7cb86630cbe8b657e18e12e8824044. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:42:27Z), 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/QZFZ42450400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60250126ec38bfdee850962b91e8e74d28fd639e1ddbe7b9a5789653c79902c. 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/QZFZ42450401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dce48f5482c8c0a0e918d2712957c3959ce3a8663acf9f06c9300d35e2a7300. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ42450402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fa159efb542db583a7ba913491ab546076554f3780c17b1b54fa65b38f2164. 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/QZFZ42450403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b135ec480097013b63e3e96d2b7060f036612f7edd0d3b18bf7932e4dbe3497. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ42450404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267efd3c8e5db991531d24c690d381fce932e4107b3a7b972b70728ea015433c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ42450405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ac206ed9700c2f235765db2b75b0fb246e9513834109b0fc58e35cf8a42a4. 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/QZFZ42450406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade99032bfdcb00de83679b0cd76ea73c0f308d982625ffc5e7a46285672dc9b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2401328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d61c2bc44bc90f48e3439ba74b64093ba5a1d3123d65532fd6b49ce03e69eb8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM24S2401327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99cb3e578faa769e89a4f26d4414f1cae9f7fdccce62ab91e4ed2912d17b3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c607f22a48ef2b9a0f67e51ec25104dae47061c30c65e572de51bf0a6021a91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe509a76b39a8fe938fba79f86cdd7f9f2df09f1b0d9c4f38398bcc5bada65031. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB22424106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04faaefc635f8f927acab5ba3b013ac596a59ea98f80bc3f386509f1de1904b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6G2337984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c607f22a48ef2b9a0f67e51ec25104dae47061c30c65e572de51bf0a6021a91. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:23:46Z), 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/QM24S2401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e736c0cba7461e560990d99284c033b5c3766d44a91cd52727959c0dabfb101. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNA2333682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463438dcafbb65dd376d9e747ad364da41baea1c119eefa2748577bbc03e4a48. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEM2207126.