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 0xcc3a1cb28fa54b3a615b5297f96bcd92d48a8a5d34ece4faaf2e3c5bf63833bd. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e928b7b6-a210-478d-98ef-52c921464157.json and https://artists.proofprofile.net/proofs/artist/e928b7b6-a210-478d-98ef-52c921464157.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 0xea1e31558c71c67bbcab578ff6611a485f0512faf19a1b942078502e8d67b638. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:08Z), 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/ARF039300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69426982e83c1bb26818f66548ea94eb3220ac6fc7b25c9a4729007526123bf. 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/ARF039300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b56590b89eb5913ddb913ccdba061c9b6bad6b8c1052afdd2baa1ad3e9f91c5. 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/ARF039300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661de564fe335f76494cec82ae582f6f4b56202249a9ab4bf804f6ff744d575f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ARF039300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42ed184c079ef0963afa27dcae1105b9b03e34a3ad4120b476ce35a8f9b8f48. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ARF039300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e73627571c5f92e54db4173187dc1a190b692d4dc6f101686822551c7dd00f6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ARF039300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600a7e9cc9221c951d7f8fdeb94d878af041755536deca2517292df76326f18d. 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/ARF039300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f1abe67c9c1e9fe2bc2211b706eae69db6e19101093b55a214761c5e67f01. 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/ARF039300158.
Una Celebración del Rock Argentino Vol. 4 (Manal / Vox Dei / Pappo´s Blues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6949e4fe8ccb1da87e244e150985b85bfd99215a6b0999ac0441e8036757dd75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME1522884.