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 0x38c022c62f111270a426a7f013041066e80237911dcd3ec00f09a5880de4ca04. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5b3988b-468e-4e1d-b5f9-0b6095d4c014.json and https://artists.proofprofile.net/proofs/artist/f5b3988b-468e-4e1d-b5f9-0b6095d4c014.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 0x49499a2f9894617cdeb765d65f6216d4c2d64caac337d5ff48180ccbc2bb0379. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:39Z), 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/USCGJ1880576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe95c703a28583782363fcce030db3941c20d999e443c033e22a407f78a18c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGJ1880577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96998683d9cbbe4c1bfeb730d952458f292ce5ae3847d2900c61396ee2b042b0. 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/USCGJ1880581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fb21c763ce13c9cdc0660045c015885467bd87506dd70fb03fd50d6223d409. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGJ1880583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6cf47829468a50c3374733278ab0038465e1283c22cc63c1ac84ca3e1ad215. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ1880584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81552c63ecd64fddf3a98cf33cf1853b0b0319bdb75727913689c36dffda28d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:24Z), 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/USCGJ1880585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0e61b2db4cec0f0e89ac2b2810c78076f768da6352b449354e24ff30610b5f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USHM21545574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145f6790c681c8661bfaa209af0c2dd5553c6bcd72ed40625306cce500375d8a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USHM21545575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a0ac7138e22bbb4a6b7a68bafae45df6a188caef9c48a6998a448ce2bd1919. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USHM21545576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11b96f02aa79e0abe208468b4b75df3b50ea6f65d45473c82eb334c726681ad. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USHM21545578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ad3bdd776a7aa6b5086ae78d46db4eb116fa85836252f65f72bda45e4c7d0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:25:39Z), 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/USHM21545581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc5da1df99d3b44a3a5b46456cbaefbbd48ac6ea0fadb485971369017be57a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM21545583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6d4b45d9bd414288e9160f50583c1c02b131c4b2000ebdfb04057b54875aac. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USCGJ1656872.
Al Son de la Marimba / El Alcarabán (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7469115faeea31f4aac41a45795d93197f4896be503994711aaaf3cb150f7c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGJ1656873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec088d154b095e5eee129a0fe80f1f4dd0281b89680f39a36e09a59689b0122. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1656874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c21378bc63cbf9ddf1e4194c801b59db02fc746adcdfc2a4b3e5bc09dffd3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USCGJ1656878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d85843a556b599d02d339d5eea03b7ec06aa748dc060b3598259443aade2af. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USCGJ1656879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4d40643725ab9b4757ebdeee9bd1917bddf2faa602af32169cab9df27d17a2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ1656881.
Como Yo Te Ame (En Vivo) [feat. Armando Manzanero]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6af5036dfcc60ef14fdcc3291063c9cc2d2335b88f43302c03fcccf969d2d7. 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/USCGJ1656883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c15ffaed1a13750f6a88a7d1ceb5f679de46515694edc869f1c4c6a504c6d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGJ1656884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce0deeb42f33f082d518dc9529a14c9e0220b86119d3702ac8009cb70ed205b. 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/USCGJ1656885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98a6fec0c98581ab93f0d2f0169f1bfc906a84f5dd2db73336e2ca08f4fa9a6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USCGJ1656886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8d76d27a2d7ac85c9952b99a4f115bfc140e331e4e95ca7c32f1a77d4895d1. 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/USCGJ1656887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ee363a742b49535c5770065bc46179def62a4384d11b777fb5bc0f4085df3f. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:59Z), 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/USCGJ1656888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a584bac799891d4dc72023bc1c1175ef16ea80bd35f3e2ed09c391ac14eb3dd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USL4Q1885985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2564ea7b38e9787e4bf55cc646fd0116e0f25963a7f9c105005fda13c57b2a7b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM92244108.
El Pirí / San Bernabé / El Torito Coiteco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980eb636606a114c11cf14bc840834f4b7752fcc59d308ab36ad68a2f5a64a79. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USHM22306397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12463ba021a03b645b8953f6355842a35d42ca5413e237bfa334d38d735e1be4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USHM22306402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665fb705f05231262824973dea8336f6ddd816f60305f3b1b8c3f4dba4e027e2. 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/USHM22306406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49b06fd4c0ac30c4a0e2209bc9e0b42b1e3d3633b9e6cdb0975de351253e78. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:33Z), 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/USDY42397281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28ca3e8349d4bf2bb86e7b864ce8820d19dcaa9f86b573e09c661c305b3590d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:52:52Z), 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/USDY42397282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4be6c9107dfd8a0779424b6ff0196b734ecea8eb3d1cd9b18c905461cb542c. 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/USDY42397283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43eeeb4d1d0ac40c5255f7d9f9296575200f3893392f8da9d88f2cb53cea0ad. 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/USDY42397284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0270a325fe0df56181cafb3417d715df509e270f6bb5074433936755a2a265d3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USDY42397287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31342a65f4cdfd3c11613190fb0e5b6897a037ab97d88a87468470f0fdd78f70. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:45:16Z), 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/USDY42397288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e48788858b5769dce34cfa99b91e0cf32a776b9b2de08de3d499e0422d858db. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:14Z), 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/USDY42397289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa690a92b8d1d47ca910ade6d30f99c3505130d452bda6cfab0f3dc19e6d0ff68. 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/USDY42397291.