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 0x0d2e3c7f8fbefaac9376f30711d4dcfe2d658e3ebaafe7639990292f297a5301. 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/20336dbf-85d6-4ad5-8643-42e3824b9ba9.json and https://artists.proofprofile.net/proofs/artist/20336dbf-85d6-4ad5-8643-42e3824b9ba9.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 0x1e0bfd797526264556eca0fc797f26e39742bb5ed47c75669151d6799f226783. 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/FR2X41407064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd4914ec8292030d549c53b6c3e6f46ff193dbd5b93e875f6f9c15ffe9ef64. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:24:40Z), 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/FR2X41407065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793a58bfc8274e5ece8487783cec382f10b769a52895a9867f78ccfc6ee37b06. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR2X41407066.
Popurrí: La Ventana Sónica / El Pavido Navido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fc2e55e5e403a71fceecbcdc7ebc4aa501f46a78b9d037fb5ec9b61129a59c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR96X1564396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23193d354595234c7a9e40ec67d1b10eb6cab9f00c7fd84f60a530b137428a9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR96X1564399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41be760e34324b52faec5c505fe82ac0f58c0c1b621fd52413cd3b11dd2a935. 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/FR2X41692264.
De Michoacán al Guamuchil (Los Mejores Sones de Jaripeo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd91015e56ded710c03b0c9809d96c54e86179be095a7dc11719142ea3443b5. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FRX201642971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601e8860ce1514b2a2b95ed3511e4125e656033bfc04e5e19e57f98f7249dae1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:46Z), 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/FRX201642974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9356310fe415e18a43ca2f1a0f2992aaecc4e1804f91686705f27339a45e9a. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/FRX201642975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbeacde02c16e7fba635e82376f9d2501024f32a259b0b0b6998f6d6fa3dbf3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX201642977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2434a86b782552f179e4dd2b5375e58c12cb7ac9fc553bff41f6eb87541ab802. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX201642979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9abdebedf3b2e19962f49bf2e14489623fdbf9a767eefddc9d8c83303c4857. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX201642983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa2ac4e66dc4ef2fcc979e3ff7b04cc5f23cde32397643015ef7bb44c15a261. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR96X1983309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed2a0beb7b50a2135ffd38ed992f3de94e0509dce2d08363c5f0efb99b86e09. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX282329029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe34da460208c640fd9acc6674e68a190d6ac60399a94d7bf4ff2caeefc3d3f. 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/FR2X42408983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2496f950659a4d5724fddea4cbbeb504a2c960764b1692b94165ee4e60fb030. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:35Z), 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/FR2X42408989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e34415d231a5b8ac50c609d717b1b97c4c6a83d178b030063e4c1fa1c730e73. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:31:41Z), 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/FR2X42408993.