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 0x5d881b6dfda7799b51144090e060a0a9e234e4b72645829b62702399d20fd1d0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59195be6-9bbd-4148-bf37-10dbe4f9e3b9.json and https://artists.proofprofile.net/proofs/artist/59195be6-9bbd-4148-bf37-10dbe4f9e3b9.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 0x5191240389f401d3e242b2ac4f225b5317dc47fc6034b7f8d44a8afa71f14fa2. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:37:37Z), 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/DEZC62329275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21307f0dd2e4f4a07f6f10eaff49a9222c508bed4b6d226cd180eea4e73622bd. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DEZC62339722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9255fa5994c433fc628fd91f8a9442a3eb2b6e1fa04eb33c626934885cc9cf7d. 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/DEZC62336364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b15a1e86d205b2a4948a4e53217265e8438dc42498aee1f4d12e589f586eb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:59Z), 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/DEZC62339724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16a9ae0ea037e0f1f605099e83fcef466cd6b161f6788b90281ef9df62c41bc. 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/DEZC62339725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71e09dba1751834b41b1f99a34602fed5067a7ef82c3855db21c7585a6fc92c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62336361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe592e9c63e4944eb42695ff6fe1bbffd28b369772246078ad32ca6ae5036c4f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62339726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6062f6d422c3daaa46a962d6862bf669e0ca4e281c6a5be6b02a0515dee4c3e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEZC62339727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e5abe714e18d41bb172008eb174fab094ed29436015188ea277a435c860871. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:33Z), 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/DEZC62339728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5191240389f401d3e242b2ac4f225b5317dc47fc6034b7f8d44a8afa71f14fa2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEZC62329275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1b0d9c3b4ffe99c3a1c03c7f463722cc887485a777f7b2c50cddcf6294b600. 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/DEZC62339730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778708c10816fbfa6ec40916575ea446c76b10fa07e64397e350a808ea013cd0. 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/DEZC62431148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ead923028057625a76ac0ce6cad25485c5aff50ac474132be1df8591012bd. 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/DEZC62431149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35befa062f9570acf9edb617e6132b8f952dda6cb000c2b824a16d91f66932a8. 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/DEZC62431150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffb1e912551818c61fc34abba4f244ae3b2d27b94e48c3d2daf9f61bfc20860. 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/DEZC62431151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf6065ef479dc51e3652e88638cc83771190da7bbc839e456a90361a92e3330. 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/DEZC62431152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deca08f3a9c8a2bb3ca40feb3ea97172fbb3105bfa70c689d4c24a5e5d053a7. 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/DEZC62431153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0385e01eb157baff5feeb5b56cc38d4a462756df5f3715ffec1e5c81d6ad9e2f. 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/DEZC62431154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5e029976639de270aa61fda71919245057cf4844f08a90ece9db3390b2636b. 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/DEZC62431155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cee2f7b1922dec38235ee0618693f19882ffc2ad379dfaba86d5d58a77f9fe1. 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/DEZC62431156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1586ceb0d2da768111be5d78bf65311029392aa3fc78b589d174a1df5bf91d8e. 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/DEZC62431157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e01556054c9a11a14726341cc23a03920f095269800165a8a982df2870626. 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/DEZC62431158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d089daa777ba3d64d4664d0862d2c8a7aa779493de26a06ecf8efa29876416b. 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/DEZC62431159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa06cdb975ac9edaac833823d60c9941f5394141a8404ec935e5bfc62ec451. 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/DEZC62431160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6115e6398fffebe309b1d8935db4fa462f6226f18d8fbbcf4decb4ee08ea14fc. 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/DEZC62431161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a54aa4d339f0556bc49e25e49856efee1d15a03bf00d50d513ef41e0f7bea29. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEZC62462440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a54aa4d339f0556bc49e25e49856efee1d15a03bf00d50d513ef41e0f7bea29. 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/DEZC62462440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd82bfd3a97830e3988c7146c6259b501694e31590cef64e8ceea57dc8bac269. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEZC62462605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d63fafc3fd7c5ff29cae3758fe92776515b849ebf84c80d5500420d1b10c69. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62462606.