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 0x453655990c1c759a69ca5123ff803b65b56592b16e50476496faf5bed3095ad5. 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/8e073044-6d38-44f3-8f84-b390788c0166.json and https://artists.proofprofile.net/proofs/artist/8e073044-6d38-44f3-8f84-b390788c0166.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 0x8b5c393f2e98bfd2f6e574ec796d3709f653127ec26627ca91e9e60d3ad995ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA62532769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5afa78d5e646ca53c54e0d6e600406eb51e91a4c4bf29e123b32e627a674f1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA62532775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c341cd1b182b7d9b03166556bda6b4a485d5ef1b8ab47428128441be1cb273. 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/QZDA62532776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290b735f92900cbcd890d34feaf2a0dc174ae3f66ea79d24c7f9118d929bf001. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDA62532768.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636e70651078db73c762d0a1f144d44cfc28e62c0a15a6b1741aaddce5b605e4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZDA62532772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f85b4ace6f1358078016023f1fb279209a54e3995e95e7f6472ed7e9a936d8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5BU2465650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240a86cc23e67d8da27bb5b0925e6b8521788d5ae3ee82f6a226dfef1ac40aed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5BU2465654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a626feb1a379087c2364f3d9e0fffcb5994246d1749b322c7410abc005cfa6. 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/SE5BU2465656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f00496d21795de3423921495e42fc7844cc8f5720104402e5cfd2364ba68b. 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/SE5BU2465657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c9ac30a739eb0ee6e88954617daada664b3f2df938ed8d347f74bb0bd2edd6. 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/QZPLS2156299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdae13340db2ac181b512c10c0a6d872cc42523bcebf61dc50c42eea8fcf5f8. 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/QZPLS2156300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c0f6b2f92ba52c328c69c335fe47066a94675bb6a0f76a78e3c0021a782e6f. 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/QZNWR2107726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be21d56a7f2bd9252104c1a305612140c12a51a35dbf96525254f5aa074c803. 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/QZNWR2107724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05140654052371aedd6f3520824539f3a23b6907427abbd9681470f6a8abfc61. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZPLS2156298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42174d17c872467aa28af62a4e35fd9b664d885ff175ce173102caeb7164c6d1. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZNWR2107725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46252819f787de4f93564b3e63ac9c6dfe6c34006722f3b614f09f47c4581fa9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZPLS2156301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10461b63a53ab02e4903ffb117d3d3bc14849b0feacd6862a997f9565373eb8. 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/QZTB72458024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676ab70ac51b31c48badb27d3628bc2719e87770400449c6505d22293451f250. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB72407411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c32e7b02a83996edc0aabf91fc1ef1a5c1ed9711fd361a97f88519bfe2a95e. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZTB72407415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83576595587494c43013ab8914def5f84cb8f1e667a5d7e96b8d465ecc62d82. 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/QZNWV2460935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f28dda7a53787bc12fec3e0aef2b5933dad7963defbf8ef9f35fdda70178b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWV2460936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2129452a10c6402dcbf478b64b4680fd27afc7046ed81189d7814e1a5f198c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB82400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4496d3988548f8cf1aa3403c574523d498e0d65a23d07e048dfbd435bda3a17c. 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/SE5752443167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff35aaa6e99f0043ce689451498aca48e743b4c6d29eabc4b981740875413d8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/SE5752443166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c37943143dc85f290e6dad25baf7fabfcc592e432c718d757eba04babdd0f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SE5752443168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e70f65eff684dec18d64ba883272bee54c69b5d181171a71c9e889d76e8ac1d. 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/SE6XW2367635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097454d239ac7b39b91a2f438bf6ef22812c41e7ba859c8229c85f5388ee426. 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/SE6SA2382494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e4d3077dc36b10aa28ee174dd7d806e6e5b7747846635e831774039125f32. 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/SE6XY2330206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1152654556f3cad54eb8e712a4314eeeb1eb1192388a2c0a3c9984b7b005b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6QE2330639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f84f8b70a95f2c458e9501249076792481d5273c3ddc351fadd5af1f764f87. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SE6QE2330638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34046d36f6962aa65ea763704f3b7fcbec03fb3970a6b59f4b36c99a20d4851. 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/QZTB92269152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c86d32a5647b7db4cd65b0dc5dddd5834a4daf6e0ad2de41f7a3abe3a4a032. 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/QZTB92269153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c03f01d08a64066b5fda8f69538343daceb2344547fd706f4c39ca94e7f148. 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/QZTB92269154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49b249074d979de7fbe5ee7186c54d54a35914749a8a9e743323b12d2881ba6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN42380041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6839fd74422b971e9d09a6b55cea572cd4750a1583807aa6a302bd7146cbc. 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/QZFZ62397114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c985837825f863afeefcb47cecc780eb3c8f2024ced9299dd7df9b6f699facc. 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/QZFZ62394135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf5f570f4a658320fdaa0f5e788bb711b53eb60bc2afd075d8f9b456ee34da. 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/QZHNA2240850.
It'll all come to an end (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a456d9d98806dbc414f074f05b72e6dfaea6d29b05110c4f93d536bb1796746. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMER2122231.