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 0xa7a6d71f0bb4e642729f832fa9e62120beaead009a6ff0ffa052e2a556eae383. 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/13ab7a62-1f4a-40e6-b11f-e2de4657177c.json and https://artists.proofprofile.net/proofs/artist/13ab7a62-1f4a-40e6-b11f-e2de4657177c.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 0xf191ca4f62b15dc3b59508bd1baf2ff9ef69898797de9db4ff2cf7b633498fd1. 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/ES71G2154582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d659d1f81f8b6a5e475e7111983378a939783c1d160c833dda0cc95cc191b2. 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/USQX92301430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078daebd01d2394ebff7d7c0fa3135114c837f771b18da2e12f5ec03a84c2597. 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/COSO12300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1249769280abd8268f485589fdf45dd66fd831a50c148ea9b1b9b03dd91bc781. 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/QZHZ31969698.
Al Son de Mi Corazón (Track by Track Commentary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421fa73bc40824a2143e90d401a31cfcd1cbc6e190fdd597667bed62c3d4888b. 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/COSO11300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a06e45629c326860bc777a7fa72b1d787f7175b3f6fe8ac6222e883553d79. 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/COSO11400274.
Tú Tienes Razón (feat. Silvestre Dangond)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568171deb35842ba139d9dc87804b54265e5e2353bbc37e02d1eb225a8d0d79. 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/COSO11400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed33bee92cbb8ae70823104a55cc2ed2693a15d0cb384a4507c1f99f0f8f6fd5. 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/COSO11400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe474ddfa414276be226713b5de9ef41549f92432a2f9106b5201330bb731f7ef. 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/COSO11400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f435e60bf8b7f7639f5b3d4a8664011977e2e7defea5c16d52b5c7ef8a1a9c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/COSO11400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9819c78c6d39fb29914ed64081f62096cd4ded44c527e35a16aa127e6c190. 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/QM7282446701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd03ef8c52210dc301525556e65cf48e7e02828b814ee9d9f283a7213fdfd73. 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/USLD91746831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235baccfc5c0f161dbfea9a08aa4cc1dcf53c908d1418430aae8db3eecb5ef9. 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/QMDA72145923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42a6b4d7435acdc74eb6f2941dae4d6de3b06b9ab453f156e55e89c79b75a10. 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/COUM72100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e914892c050ad52a3869307fa472c755d3667a3e8c61d1ad5fd85d145d9934. 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/QMBZ92013234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14969fb1610cdc42b10fbe32cb6feb88214e63ceff8e81612c6dd8d599e0d9a0. 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/QZMZ92045120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b7cf7e624fff81ff89df47064f858eaf122e43a0c917f4eae8fd0e181c7ff. 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/US7VG1956961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7045668810becde6ecc9a616bfd19d022b25925b4f438b71d8138dec949129. 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/QMDA62284972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f51283079d05749dff98aaae81c75b88c83ea7b09758b987621f03bedab562a. 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/QMDA62252447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ff40b3cade4ece2f88ec6855ffc98a35070b7668b04ba33f7495a35cba44de. 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/QMDA62111723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a8044db24c2cc024a418c471bbd7e6f795a42fe15c1e30d35cf2311c52dc74. 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/QMDA62285069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579f78eb1842061c74cc349201c70c4b2d995fbc5c7e56802ce420c22b934331. 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/QMFME1922932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d69e94d08f3f43f329f5c42dcbe9d1fbfb0d4dd3ed00d6566701af38d78e358. 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/GXBAV2593665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46078ebb221535eb3c10cb984433b4b66d7a82e44a70c7bc35d00945edb39d8. 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/SGB502518524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d53f61c234aba4d62d68db22b5c032fb406aa781d835e144d333c1a0d642e77. 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/MXF152402296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf60a813ebd961bc78bd66e3ce272c3c44a9fb43702227d01f5d1584f646856. 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/QMBZ92382674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9403a8fa49f3ef76986c96127ee583cead164b1f086a1a9e7255cd085063f457. 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/QM4TX2157014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69442b18ed91fdbc7bab167d07a79ebbf7250ad921889a955db3272616d1a8. 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/ES71G2502069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191ca4f62b15dc3b59508bd1baf2ff9ef69898797de9db4ff2cf7b633498fd1. 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/ES71G2154582.