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 0x55eca242786882f9c8de7faca99140aa340ab61659dc694591c55cf3f757008f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea56fb24-fca6-4436-8698-41f18b481659.json and https://artists.proofprofile.net/proofs/artist/ea56fb24-fca6-4436-8698-41f18b481659.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 0xbc1a37ea087ff629057a76d0ba4a265414c6df46624b1f0de23d08d65d644c20. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM91227584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4453416bbd06a4f93be38ddee8fa45f3bb19551ba7f072cf080d11629d344ec7. 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/US7VG1709349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c1d5fffc7d15d727e2ff6515a0c87a4f9e039d3118c7c9873518a51f1af1e6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:29Z), 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/QZ5AB1641013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d0c8c15243e1162a1a0de4ccbf10638288cdfff7299a4bc471e4a1425fd12e. 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/US7VG1709353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f727f96794f2afd84eac6bf31e8a5215ec39112bcdbf6341d5fdf544afbd3c. 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/QZ5AB1989862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4af955cc9eef53261a731d7c158ce10b34e23270babfb95f3b3c7d58074241. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZGLS1990677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bb4765b653e567709e946a5c2df5a94a6e36b8d5ed78245ff9e40fc63b9627. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:23:49Z), 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/CAHQJ2113998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d5159acf984e2313ffcf1ddcbdb06d6bb4a5336ff493f2e67774bee0282a92. 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/CAGOO2147780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017cefbbc08ae9745f4dc76ee77b0bf7380c6f492859aab4eff48ee88cbdc14. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:08:34Z), 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/CACWV2317432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a6fdb736fbac7700a258b94e99ec83ec823e0552b600afcefd031de6a1317a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CAHQJ2428361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcece8c438406510c4d05e22585c82ffa9aec099927b6827da570a83e7d76a923. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USANG2412589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1191311da3aff6dfc2f56bc3469889ef75ca468392edc3fd3b06fddb01733c75. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CAGOO2443686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94c7aca0cf38d05d02eb54ac3b59dcc77e671a1745a4002e08975b941889ec. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USANG2433148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f971dbca25d2d3ed7857a63605d4528b4786467c05eaad52adce790cb7fa228. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CBEYJ2477728.
Un 23 de octubre (Sesión en vivo XV Aniversario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef9fda6c9db69a4a0b512373906de4bcd215347e693810fbf340c15345d18aa. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF2519777.