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 0x217999efec517fa3bee1f122c8c7149fcf7b5606942385e2dd4f457dae6d4226. 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/facfc441-0fc0-4282-8371-cd7bcd3e67fb.json and https://artists.proofprofile.net/proofs/artist/facfc441-0fc0-4282-8371-cd7bcd3e67fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Un Siglo de Parranda Con Los Alegres Parranderos
Un Siglo de Parranda Con los Alegres Parranderos: 40 Éxitos Tradicionales
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 0xece55851c572f81c9766c0155027ebc2c674cd45064604ab9b92fadde7b39164. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COF019501924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c72b35f770d77886232c30215c67045a54988efc440f7ab325e263d4beab856. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/COF019501929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a71e61002b57d5210b3e0a923ca0b1f05f8879594a80839b8aa2226cbf0449a. 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/COF018804118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f587412cca92d92d80be42e9aeb10aa3f950ff0e1a7696fd16c686ba3a56ec9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/COF019501921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ba566af570fe5eed496cc7740c0f474d5ae402cd6a18e34fe431fcba805372. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:57Z), 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/COF019501930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904d03cccaf90a736992bdf8806414c57aa28d3f10d748a2be763dc69096a6c. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/COF019500816.
Un Siglo de Parranda Con los Alegres Parranderos - 40 Éxitos Tradicionales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16efc6c8a207959a4e86f704ecb7429cdfbe4bc6bf471aa78dba903bfe278b18. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/COF010500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ad96c02456197f407c87976cd0dbd153aba345bbd375453fd0dc13eea9077. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COF010602407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2b6c385bfa6741b019233b750049345ec9a297b9d7a1e48e8b6227fbd312fd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:59Z), 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/COF019400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f713f4e5635cc81867cba212f60ac7ce13394358ddef81850c5c23cacccfdb. 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/COF019701061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144faa2852b7013a61d8efe5955f37da4ab5c886e9c4dfb981b69f2ac7cbe63. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/COF010001244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece55851c572f81c9766c0155027ebc2c674cd45064604ab9b92fadde7b39164. 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/COF019501924.