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 0x6a6855a3d68402582f62bc1bbfee2ce0be648443cbfa674f26c26fb0cce64814. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5a74b17-caa9-49b5-86d3-4e8464cbe3d4.json and https://artists.proofprofile.net/proofs/artist/c5a74b17-caa9-49b5-86d3-4e8464cbe3d4.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 0x0cea451b9044fe9438bea522a41620c5e0a379ac8dc84856300a81a87c407d9f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR2096370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa075f77e8f9dec753bac65f31989d09abffc8161d3a1a6e1ab88e8e868041f2e. 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/CA5KR2100729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7da066293746c35f35228cf5c58aa4cd05f9b091ec746a034d16f561505a5e7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:53Z), 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/CA5KR2164431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b1cccffce191c4eec7b046d7a08e5ec06dd28e3dc922f8192ea49f8f31f0b1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CA5KR2169228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5565118ee34eaab4a2148a014c5789319521c8995df205aa796e7f9555413c3. 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/CA5KR2169230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36f7e5d6df90e26c085da96a1447abfa667464c34c6c87427a5ed608ed3a710. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CA5KR2169229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20aa345da1676e0640308bc222fba0e2463ff8d6fd5848bd1d03552c17e3c10. 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/CA5KR2177722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612815e996b7c0eebe9a0f179d8329ffe52fc435b4ba1cecdbd4e9b32019e92. 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/CA5KR0002405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196b652875be75dc69c4f9b8d12c075e9dab61d2145ca58ee953ef9d545b646b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CA5KR2247273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f2481fb6999a9c9794029f5a54f7e8b2b2435ff3dd83cd24f6b03f58523e33. 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/CA5KR2255816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3363ae2a0e5950deed43ac474630b7f5424174d5809934fd6f61b4fc7f6fa3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CA5KR2255817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acae8ea6d630397600ff256d9fb30985a50f20ad23328f24b5e069b98ffb21a. 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/CA5KR2255818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d420b249984d6b96cc5741244b82ee8da9faf29c4b8cca77660779b0a9883. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/CA5KR2305295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f1cd75f7f94888d026f4f1da383bcfc87e77720aff421a958dcc2f7020632a. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/CA5KR2147782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598900ca2329d67bb4ce616939179314637425ab15cb0af3e46852a996e4aa5b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFP2321883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb918b1e3aaee3d0d9f7aa48968052c10ff8105208738abd3a4c37987dca88ddd. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QZWFR2375787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aaabb5d3682683802cb188b0e192ecc519754b7f1965c11c958c3fff24ed9f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:25:41Z), 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/QZFYZ2437508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c5a33135692acdac7702af2970d1f55c32ef4d265e69d83402a9cc80325cc. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:40:25Z), 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/QZFZ62442530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb1cc11aeccba37196e957ac8718ad2759fcb3f632f8308a62a08cee270d4e. 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/QZDA52466438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd943594555b07a643f505261159c92f293d620128a300b2c24191e01332eff03. 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/TCAIR2406459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79046e0bbe8b5d8deb13dfe859c2dd7a7a4df7254ac52557427b7325267cc76. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN82429973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac300b096e5e1d2a4e3d8717d9b77cb0c713fbdb57afc3d560f9ca4e59d3335. 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/QZHN82481131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62203362b38049132b9c4f8f12348467c73e50a46c6cfd897a424b6c163027da. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:53:05Z), 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/NLRD52414486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14aa45246fea5646f9e2fe21738c2abb016adbf20ac95a9a90e4d4bca70c04ff. 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/NLRD52414802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5350f6bad62c086e57b2d1070fc977f143006063068b49ea5eea7224c5504488. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:30Z), 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/TCAIP2463119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d21da1606da68ad3df7e673317ba7784cf4d43fa559c9e41fc8cdf41cefbe12. 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/TCAIR2490677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d121e46a842a049799889b3829ae18460168fef917534ec178a3f9f7ddff5ff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIU2470509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1176cf399a9bd4a7b3a1342662ccd3b9568809de275719ac49b155a9e8eb6fa3. 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/TCAIS2422373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6124e256685e4e4a3b4ef2a5ad7799fb486a248169aa176501ea7d140a5903. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:37Z), 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/TCAJD2469678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d1a940f56214e969d8a3bb15ee9b71597288e84d7d87748d098f2a65123531. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAJG2591782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8497a764609f2870337b16ba0e8e59fef5d1699ce945fcd49d7b46b6722566f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJN2562680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec816b6d35162818d8ff3ed277c3700969ae8955e993f435449de34578a652c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAJO2598688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd945410cfa4da6b2b6cb8c2e21593ad624e8c3ab0b4fbae131d77c9d3850e1. 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/TCAJO2593247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b197578eb6937a578fc346b24dc72cbcc414efd54e3d0232585da56721b285. 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/TCAJP2509496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4226ace1c473c0a3ea50ad7a64b9ccf7b194c5d7ad139a15f31a094a546f5d0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTB82545568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9414e8291c6776a11f79f219e4d5ae58396bcc5ba5456409d3eed3fc9c63c3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB92536522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0a840662ce87dde26d7d051c5cc8744137be79c184581a44e0fe8ce80a9f4f. 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/QZTBC2558365.