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 0xa7172288978b2277c58a2e527c6178bdbc5bf670826a7f9f61aa09e46f5451d0. 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/88461f40-8032-4adc-ab2b-a323ca2602fc.json and https://artists.proofprofile.net/proofs/artist/88461f40-8032-4adc-ab2b-a323ca2602fc.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 0xb508088c2d904b6c15ef644bef7ae1b187775f22ae58beb11577701fdf529ba9. 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/GBLFP2139204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e063c0145375b631b62a68021ed3f71c47b839c8d5d364ef0054ca4d2af9fa3. 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/GBLFP2139208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b64e7ef0787551b782a1e9bf9e8729738cc661447bb244760ec22092842381. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:05Z), 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/GBLFP2139212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c16f1ea3b4bf9f11224a0191d55b861ebe3f0096de30404a2feab6129d89e4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBLFP2139214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ca31cba03a8997699da916dee2fd7cf52af8a4a7e340d659085a665c752f15. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP2139217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eb0dcc53eef879088e588323536c54104e05a4c130cc2567a5798509fe300e. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:32Z), 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/GBLFP2139219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e1f48e788bc625ceaa40cca7476629e4fb4cc6af4ca43b8944dcb052a3856b. 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/GBLFP2139222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ee57296a29b40da9b1f1c532c7865cb797d27d961073697e52d4da85617e0e. 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/GBLFP2547790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c672f88629c8c841d3138273478319370967fa7114df897434d501c1d19d5. 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/GBLFP2547791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ae59ea8ce1c222ce6dcd8577a1b0caf01f73bf6b95aba701ff42e924be5d65. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2244783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c1fdf39155728f1b910dbb2c668b40538987d399635dcbf4737b02d827e7c1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBLFP2244899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50593fdb310e699933db2864ef3288ee6d58845017d8783f7359a6d5ea857fd0. 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/GBLFP2251233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417ee4ccb2002463425e4046b511adab495ac0ab3d1284be6a608a35fffbc1fd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLFP2251234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a901d815db4f4cdfcfb9d413eb3a32d7350967f585cee48067ac219aa4a144b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBLFP2251236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11fca084f8994a2580f685863eeaffd118b8944a9e32a7bd620f98b9b342902. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:23Z), 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/GBLFP2251237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929671be18533817c95cdce54ce89a4bf531ecbc6cd3e49da19a57429d4af5b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBLFP2251241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd3bf5f9beb53f67e56f94cb566f532e396e150e2cba13211a4c9f126cfffd4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:26Z), 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/GBLFP2251242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc488332c7c9322869fc09b9a6ea2e7ca9cae5f4c40ec1f5ec12e8aedb57ce0de. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:27:53Z), 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/GBLFP2251243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56050b6633c03e9e7316898a6a1b12781f40ab9b7a463cad54702bf26dc18041. 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/GBLFP2251244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505074bd00eda4b0207698921365b36811e5ce5ad81ce9a10a1276258dda13c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBLFP2252517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdadf5d0844ff47780e560de87809f18bf2274b10bdd9c912d70a2e2d1d1b7f9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:14Z), 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/GBLFP2252518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf1eea74d7017fabdf9c64750dc63350c1e5c91e3f6ff86af4f95d30fd59fb2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2252520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb91346241d79c4d7c1b40323cdbb8556ca5a712262982d34423ad6f7b512e5. 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/GBLFP2252521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cc872fbc9a6232d08aa91fc80478b86b437361b13b8fb7cc4b58f1b43f253d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBLFP2252522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ca6d076c34e24bc1ed19cbbf0081276e5144c1624562d70930c8776b7e078. 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/GBLFP2252524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13186e888bcc2c99a01d6f4a53f03ac217d4350138274aaa3cdfc88b77f100f5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBLFP2251811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1651583cc9f04a7505c4fb675a315ed4e72f136f4c15112237ad92cc56fd7cc4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLFP2251814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a3d8291f96b6fff8b85b4c8a7eb17eaecbf724e57cc07f093f6bc3793513c. 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/GBLFP2251815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c39084498823af38930cf755694df11790223ccd5bc91f5301591a94609c1cd. 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/GBLFP2251816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6354cde7abe3dcc3cb5712c16136c81da82c0d495d713462c4b86d5a4fc0d9. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/GBLFP2251817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c4039b6c921107c3ebaa747b90e914b9b1a301cf7420a844696bb9a06fcef6. 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/GBLFP2251818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d946e6f71a25e596971df137474d12a19f7714901a9a2a3930c5ad3aca0935. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBLFP2251819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33851612c00d2f670855307495c5e0e10a8383ed55a88cc6a677d54f624954b0. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBLFP2251820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6733dca56f0102db28caa0d56fdd174b02ecc646b4acd99850676fd6c0f32cfa. 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/GBLFP2251821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b54569e2206ef02edc3c1440356e517de1838ebe45cc8ac4f667d035aa770c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBLFP2258346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22e207b28044c123bbb936ec887b5f9807cd445f5b11e0122f2ee0da4ef6eea. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP2258349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfd8c3fae908bed48ffb5fc02f9dd93d885c5feb7daf846ab95d0007f63f831. 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/UKXN22218425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae93b2e510a5f524554a83fc4571a2319e13d3acab10fd643faea30da9eb97e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/UKXN22261662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49930c7f9f3c41f335e774b521361938fcd3afe6adac501728b1d1317ef0df3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UKXN22261664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7d0b427b40bbb7a8458ca0305a779eba56f4be1fd1e75d39c8569967d55bd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/UKXN22261668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c47902427c320d1a39d0ba7ea4eb36c0c4030690cb9456397785ede5973e89. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/UKXN22261671.