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 0x2a26a609d9114a478979fed8464eb745195146b13853e638254614307ecb4d3d. 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/59df2365-db16-46e7-9662-a96b955f9cec.json and https://artists.proofprofile.net/proofs/artist/59df2365-db16-46e7-9662-a96b955f9cec.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 0xfe54ba2a281ef5c5cfa55312fa0dbc7fcc067c60b598e49e43001f0d7719d866. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/PEMG91609002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eddff4df7843be1d067ce3cc2ed72b34d1fcfd1edcfbfbf1703e272fc75ff8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PEMG91609005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde0bc88bdee9f31d012cd4f5e42e8197045980de50ece97c63c0c0b4ec4a8d6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PEMG91834002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4821fdbbe74d6baf9c7e06b57972effff860315d7499c148678118c36260851. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:33:30Z), 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/PEMG91834003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6cf99a85a4df88c092ffd0a6295056ec52478bbd7528bbab9d832c80fd2c2a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:05:50Z), 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/PEMG91834004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5efa36e6bc5f2efaf0506e8366207bc5f790573fe9e1c85ada4c16d127f9cc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PEMG91834005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7d8a4c48571d79a58888daa15b56a8068dcd1195a901681de9beeab76eb5e2. 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/PEMG91834006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f8d0c77a74d802e264da5366e5459d4f9116585657d7a40dfb3bea3bb4e771. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:25Z), 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/PEMG91834007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36dffbd7f97b34e582d182351a7d65643e3b3ce072b8dd6cbf28ada9a788aa. 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/PEMG91834008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23c1567a77f291c7f6ae8b40871a25eaf3ae935cef2a8a9058812c161b22f7. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:31:07Z), 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/PEMG91834009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a164c6fb81231d15f8fe7d6df726d70c8ce1260a07ba09644ea4e85dbcd16d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:00:17Z), 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/PEMG91834010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4f582c846fa3a7178b9c4b51368ed879cc6d6cf8baa5bebac4dfdeca7c60a4. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/PEMG91834012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac90ab6d6d7ddc287748d31d6e0ba5f277567a41ef91044a64e90ef78ef5026. 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/PEMG91834013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff78f1916046965642978c427bc3354683b482a182f4e9fa4ffa5b909290e0c. 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/PEMG91834015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ad9efbe44d6eb940c71831debe396c14de50a219c156d8a10ef76089958256. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PEMG91834016.
Tributo a Flor Pucarina: Folclore Peruano
Ave de Cristal / Llorando Se Fue / Imillitay
Mix Carnavales: Carolina / El Cilulo / Matarina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618142d4d5aed2904d3599b52003ab8b66988545e962795106ec97c09bc884c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:24Z), 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/PEMG92320006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482310e87b55270b2d6960f65a19e2cc9e4ff9531af7d02da55412a7f9ae6a05. 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/PEMG92329001.
Wichaypaq [Canción Oficial De Ayacucho (Bolivarianos 2024)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb88e29ba9be73c6e38f8771758488467c3e8f4a81c2d580ff5eb610d660d2e. 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/PEMG92505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6ce4966b02d14c59e0d153472c9e2e7f78927c434051041ddb7730ebd2bccd. 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/ES71G2011929.
Mix Ruby: Corazón de piedra, Costeñita , El Aguajal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd76176e51b76a59f87fd08f91dd8fd8b9bd1e4202866044e11ab33e5469dcea. 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/AR5UH2402130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e87a8eeb4e43ca2f89204fae099dfa1754949402a078ac982d0ec73a917e9cf. 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/AR5UH2402133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecbe2c78304ea3b1bbfe7046e348e9d8a491c4327aa4a367d4a3c9d7d5400fe. 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/QZHZ62173847.
Mix Cumbias Románticas: Miralo, Miralo - La Ladrona, Te quise olvidar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc566013dee650c1b444c7e5d490ee67ae8b7b7112c1311e6201854e751f92bfc. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:56Z), 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/AR5UH2402136.
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