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 0x18bf6c42e93fa7a725872d924ad7921a80b16a99ebef2da328533d3b32cb1ce2. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acfdfdc8-d31c-484c-90aa-9e27282fc254.json and https://artists.proofprofile.net/proofs/artist/acfdfdc8-d31c-484c-90aa-9e27282fc254.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 0x27e67149ead282e770dd0a50260fe4f666759920577f644ad0f5ecb194a3bac5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ES8401303580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb243a69b10c04a10bfa9d80791e46925c66dae77aa46cd3de3d12807245ffe. 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/ES8401303585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd42da394ed65747463fa4a7b4893ae48d579e65d857283250a71a250d6319a. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ES8401303587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6396c533e0d713a354d1c93b2aaf06c3273fde53415892babdb2cadc0208ab8d. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ES8401300852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d78c0b2df650287f1b9c0e5959e56fa2fc12cb9bdeff2e1f7b39d92573ef2d2. 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/ES8401300854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd16e767f3f4210019d8b731af9514b7cbd609afbac11a6dc843457955ab9221. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES8401300858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378761bd1dc70af5924d74ad4ce2e472b441cefe86ef0d7952c6d451a1236dd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES8401300859.
Lupita (12 Corridos y rancheras de las mejores orquestas Canarias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861dce7ed0016b8c43d73a0a304842a33fd476a873a16ccc8734853d58dee199. 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/ES8401303411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4e207e6fdf0798d66f2cef797e395c94d9ae38dbb5e77ef68c361af66daf55. 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/ES8401303412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae27281c0fb5ce6271a97d843a12a17af3c4703767d91eac6cb8b0d9214e6ed9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES8401303414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfbb6cfe42625262100a5051558d8da260262e058013f63e0504f3f2eb9b71. 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/ES8401303420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01130039ed75a47f33942bbda30c52d66ee22b6043ca43a106c80d3acf6d59ba. 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/ES8401400448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152217b3e74fb993f5c1c647764ac2e62e702fd7c8282c25d6906f252013ab1a. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ES8401400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a66d8832ba89c63833a87cb466a48287ce43d3fe8946b9991734d07ee94957. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES8401400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d27556aacd63f7b2e62a8cfe7973bd5180e366af57500268c1692cecd67065. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES8401400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b116c1b97e7bda596c7b05774eb3d9c80c65c7c50135be142f734a3f49753ab. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ES8401400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd3e9d6e2fee1c23df025ec1d5951cdea13d4fa087ba5cd094fe2a0c6107c3b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES8401400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c89b09df8da986e7164cab33bd9415a0bc485c4e1da28ba9c11561fd5cdab6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES8401400095.
Lupita Total (Recopilatorio de los 4 Lupita)