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 0x1a443f8dfa8b325c7c9a9704b596de92c2ccc2b5f79679557ee952ffaadfcdf3. 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/75a511d3-2087-47a4-883e-ca08b4de8f7f.json and https://artists.proofprofile.net/proofs/artist/75a511d3-2087-47a4-883e-ca08b4de8f7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paese mio (Colonna Sonora di un cortometraggio di Ettore Scola)
Radio cortile (Colonna sonora originale)
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 0x83f9e7b6c3ab760f8e46ec510a89db3fe89190602bb4a3d82769d718a8d1c6f8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITR441900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae755128cac30da2d0a33b8b896245d66129dc4afea3fd13ee22a7766f1ec6. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/ITR441900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a45e975cf9bea269f84bb19361e8724375f585b0461baa99c74732b273e89b. 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/ITR441900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a7d5a9727fa3057a1c9574031241fa58ffe02c9988a9c1c29cbaa082c4da73. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITR441900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf338aa8951ee3bfa64a686a9b358a2c59bf1264843323f09966c81f75c778cce. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ITR441900240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d57b328cd24b7618814fca65f873486170c6e2cdbf65bbfbcc4c3e76f047fbf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITR441900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875f4ba1e34fea473fcb41d9adef206ceb4ebe9f99a183a9119394d173a6fe1f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ITR441900080.
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 0x815ae5608317df2afcbb36ff805481e0bc964bc1e849f1d9055d2473f77c4906. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITR441900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d874b08611cd4a734f2b9efa1dba1ba15fceb17dfa86134ced2c220659a0aa. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ITR441900300.
Americani (Colonna sonora originale dello spettacolo teatrale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c30b713d8eec40eac60b3b9c28167aef5d636c3229df65f8fea93977e463ff. 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/ITR441900170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ec92960efdd722440e6886b12f704035388b99c273edf1ed560942d967486. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITR441700660.
Delitto/Castigo (Musiche per uno spettacolo di Sergio Rubini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6587c6bb2199a7f825216677b4afdd5a9fd228f324ff53ab1693f69f6d1b37. 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/ITR441800080.
Sussi e Biribissi (Musiche di una commedia per bambini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935865d96570312670660a0006e9474f7ed27f52123e559a06eb523cf881a4f0. 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/ITR441900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24cde4b95f4313ab2b695b089c64a1704013a807bb7be07894766ed7c278f0f. 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/ITR441900030.
Dracula (Musiche Originali dello Spettacolo Teatrale di Sergio Rubini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22de3c0b81546d68c52d3a74ccc882f8c52f9ee01fff368fe51dc4dddc44d24f. 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/ITR441900600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29b8214a4133e39e4bd165469562fd21fe45f678e3971239542e34405cbc278. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITR441900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595fddb8b6510fa20e38b8efd41e12d17ffac7d9ada303fdc29d1f6702a493cf. 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/ITR441900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2f449140aada572a3be506d0cfeb1a5104ea371c15a6d3960db482cd13bc46. 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/ITR441900590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf872b74f56ad80b799c4f660ff384c88a5be24fb24830a5c94b208f36a655015. 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/ITR441900560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c03244e0f382111e5f5f6b3cccfcf00010e3575c7186599a3ff325f5225ce01. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITR441900530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113300987f849ddb706a5564cee28fbab8ee3b88c24ea3356cae69985ebaf434. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITR441900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb0997bf0073f8823aa96b620dcbae5e7c4572c5c20be4912ce86a480765c46. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITR441900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd71d8e2a26a3f9f48eabf365bc6e31f2fa7ca92e17877afd06b84f360edb9. 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/ITR441900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe288b5b2ff17d2e739d891cfb81624f6677735774173e834f2dfc19a7a44f90a. 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/ITR441900610.
Madeleine (Da "La Repubblica della Felicità" di Martin Crimp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335df5f58bc2081071294fa27301bc5f2e80a93bb894e22f5c3ba604f2175012. 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/ITR442200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66836082b3cf9113b5e5cb20df4768de1209d0b1dba3fa60704dc05eada1f9a1. 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/ITR442300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce49d1076f12346b02d8cc33b5c5180b72d6005a60d3309752884794b9c17c57. 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/ITR442300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767283d908b0b78b056bb618f5d6ee75b6f52c56f4f9794f4ef42615e0b3ce7f. 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/ITR442300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad7ee1afffe3c7a90b49e512b91b3a7a9d03e3822b161f8aa49dc961a890b61. 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/ITR441700380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0b03a8535df700bd8d5f68c89d4ae46c689e1e2634cb799ae5f2f50041f61f. 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/ITR441700370.