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 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 0x9bcabbb46bbc3546d44918f26699bf3d8133a8427296240998f26edefd9e9e0e. 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/bc1678e8-61d0-46cc-b747-2524ebed7241.json and https://artists.proofprofile.net/proofs/artist/bc1678e8-61d0-46cc-b747-2524ebed7241.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 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 0x1501e1bfd80451d4c06efa4985b5a4149b62aa3ed264179e2710622cb113965a. 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/USA2P2348198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0c0a6c92ba9b27c3c86941e237138372b1253fb712406fcede83eb9e1f081d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2252444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ed3fa61c7be9e8ae9115daa771ec6bd40d424b68fbd0587f21bb751d3e47b. 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/USA2P2252450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce5eb79b478d719982bbc27fbb56389ab96c40fce6b6b337077d48a53da193. 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/USA2P2252448.
Eres Perfecta Para Mi (feat. La Fe Norteña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9052b2936af1f123dd26e228433f6b041fbc765d63c5910b063e9b7a1054b24e. 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/USA2P2252446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c2a0fef688c804b3255dfaa9f5f0a53fd441fcddbb133ac1202c9dfa875ec6. 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/USA2P2252451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177dc4cfa2a4dce0ad1635c05f0e1e6a12f5a0f48893bf5c324a13c4650817fe. 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/TCAGH2238746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd621adee14388feb890e69b15328899908132264645a18a973bc7c1bd3638. 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/BK4DA2425161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e7f6bd1641506a4efe54d1ea98d387ac3f8e6cc82efd557e2c0dfa455fa34d. 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/USA2P2417911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a602ea40ddd63551a9324128bc49c158ef6e756dc3726c9afb3c0e8ebbafb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2414888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50c17fead3b88aec547e062c455005c447fe87eed16e8108e5c236f0dbfaff9. 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/USA2P2351105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011842069ce5862dd7e6c0a0b0e75bfaceae5480cddb288de5bee36caad6a1b8. 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/USA2P2337858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1f6b5b480937f99a4c4d5da93a8dad689f10c12ebd55a7752c08f7f8643cc2. 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/USA2P2333367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75099e85987419c612af4b44f2bc66bdbf7225c9c2f92d3875ec3e6aa41b0f12. 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/USA2P2326893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b9939eb10feb2351d6de6d6f8896d3b3af62d7aa4000a7247e5e29405493e. 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/USA2P2320841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf86bcb510f7c0d27aaa236dca06fe62fd54bc7f339e472905a3442369b689d. 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/USA2P2319811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9c6da6cb0c7f64bd261c34e1af9ba9062b6bb992cc9ba1670f0cf4d757473a. 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/USA2P2307583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932c81db0388b1a21be54f01c62d99ef66fe89224a58ce3d3d82771ba96e640. 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/USA2P2301164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70912c57adf2064096933205e80c60e381da7234780fb3e448c5b5175db43e26. 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/USA2P2259415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a4a0e54d460d221212bcf09979f8f71fe014b6ad7e9735ad8ca5abf4af8943. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2246750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b091fcd4696bed670785de30f6c60c031c5c0174422227521cc0409538fe094. 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/USA2P2233756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e2f1ab8c88deb6a274e714af15952d184ae613b1daa521b05847bedc7d06d. 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/TCAGF2287955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7563c960c2a2f45f38fd268fbb29791ffee538e338811f53b887e10a1c4b2. 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/TCAGF2249220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb809112cc6ac5976e38c59da0872dbdcf4d00f88473ebba2256441eac4eb6a3. 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/TCAGD2286162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8f7681d593fe095ad625bebdbb73917baf9a01905660e192407d83d5acd725. 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/TCAGD2225191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d0026bdb0292e46f2ccb63b26887615679aa2c9cbc96494a0a15741dc1f3f3. 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/TCAGD2225082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6783fc4f86e28859a2d7cc17f6bbd60fdc45a15471a2e6a44780bf6367b6a7. 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/TCAGD2225225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f37bc754370ecb136d8117b888fd3623cc9696fce3e6a15295dc8525ad638. 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/TCAGC2231217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e774b16d1f01a63f03b47e0f77837a0a7f293b4a55ff776c30269e6a23f273. 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/SE5BU2105868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d15e32a341ffd6f083c070d74020b1909f78dca0016bca4d5c618600996225. 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/SE62M2134997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91701b84bc87952eb240a36a60d205d2708fdbb601f90e6e48d2626b58128b7b. 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/SE6XY2195304.