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 0x6ceb22268408c7debc13748771d6ba19ea02f9970d3a09d49a1ac4ca7e13829d. 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/7631ad29-2b4a-4eed-9782-744987237909.json and https://artists.proofprofile.net/proofs/artist/7631ad29-2b4a-4eed-9782-744987237909.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 0xb4f368181e7b9566b51acdf591ea1742845af03326acf05512f6baabd33cb341. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:11Z), 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/FR9W11904209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27083f8139639eca4e9f478e90be70e4335cf52e3a156559577e7d4a822237. 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/FR9W11824448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaed895b96bf3c30c4056c562206060190d7a3579951e780ad930a8f548f67d5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR9W11824450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7ff20e210976684333e440177cd0ee4ece27db39974770086c609848b83805. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR9W11824451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436ba411cb3592eb2a978d68df678fc041d718c4d4727c758ebd535e44b6b09d. 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/FR9W11824452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e7b6e7d48c496999ae59ab05373a022654c6bb4c5685434a19227c6dbc7cc9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FREGC2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e3eb094ec6a57dec485631893e7c08e17cea6d3c745bc56f61bb9a5e8858c9. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRPZ92313480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82af7c4538341b535a829bc614274fdba13bddbc836207668115ec2228b3fb29. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FREGC2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d44260a65bdab442be291a249895ce6dacaad2d90b11e1671b3f6d388ad73ea. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:33Z), 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/FREGC2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944096d60dcef4ae6be09ece1527540adf37422db35c336660a3ea304aa3fc5. 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/FREGC2400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce557668c582a55d832052458883a5555f585fcafc32ce83bf83f0f1c447902c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FREGC2400630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1416fa4ebc1bab6fa5696047aff42c819631ccd6acbf748cfe3c8ac31b4fc28f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR9W12014197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e2ae2b3b7b3b6492ed7c2df30d44f49cc89e5d553fc8ee8b7786fb0f668123. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:11Z), 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/FREGC2400650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70688bb8084094994e7892154845e0f493d6171a20423140fdee36c3bf3656b8. 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/FREGC2400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d515d6bfcce469ac96034b7deb687a7e08840f95e7da5eb2a83841468e47276. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:28:52Z), 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/FREGC2400660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf4e2f6b0a22e3de51d99a9b848bac9eb2aeede1e374a8efec57e2642e94725. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:28:40Z), 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/FREGC2400680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944096d60dcef4ae6be09ece1527540adf37422db35c336660a3ea304aa3fc5. 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/FREGC2400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1f5c6ed92a9cf7fb65f3620d49e27abdd8c983ab29fa9cbab4b085bc2bd4a5. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FREGC2400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ef7144d3607c40e0f54616d24f7c7769a7752e8693cbe807d53c556b29db25. 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/FREGC2400620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c57b514d51e783f78d9ab34b0abec06a07849b8622d2007c07166775737391. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FREGC2400480.