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 0x7ba65254c35c7bd58fbd791b75c0be5cd8351925b47e55a654add0de92ff0806. 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/2cf3ffd1-12a9-4359-8602-a9c831fdc056.json and https://artists.proofprofile.net/proofs/artist/2cf3ffd1-12a9-4359-8602-a9c831fdc056.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A.P.R.I.L (A Period Realizing Infinite Life)
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 0xf804704c98deab46526a6579e16dbd9a6dd869e871abe9f6d15bdf60edf6f28e. 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/QZ85M2011650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc68bf4d37526570ec71fb81c1e0aba366309c4ed47a5d26f88774c9c3ffc32. 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/QZ85M2011651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150d385387cd9baa60b7f45220449f8f63a64e767c648bad99051da51eb7f1f5. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZ85M2011654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9b23f4c1fb44b3782911bee5292fea3593663587e97a6c6a71be354d87d145. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:50Z), 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/QZL382039009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0320704f57020575eee649a880948024287919ddd450afa0014d9443bfa167d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBRKQ2519688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb13bf1283cfd09d2e5bab11475697c44b7c352fab447547e4509c57fdacd9. 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/GBRKQ2520290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c7c7e480eec29bcfd5846aa987e839c26a35fb69e5a0acf8668afd40dbec3c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBRKQ2520508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa84fa1660af1691a1c12470c5bb3c765ac893df018c8ec8f5a2cfaa3fad4893. 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/GBRKQ2520881.