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 0x3facc05537dd830e9ba904fc8ca30f844c3843bd8127d316249d73ef3ebf698a. 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/d84efea9-5d52-48b7-bf8c-46f85f9f4fda.json and https://artists.proofprofile.net/proofs/artist/d84efea9-5d52-48b7-bf8c-46f85f9f4fda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Put Your Hands up for Detroit (Hypertechno Edit)
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 0x8dad68fc779c0fef10a96201728514293d1480abb39d0883840929bca9224b1e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:24:20Z), 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/QM7282353070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f9b81088e531e219e95611570a13a28816d9c8ffaa0b80d133d707bbf094d8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM7282368277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e56407788bfbfb76fd1618baec066ebe2b0d8737576ce64df3236f1eb44ccc. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:11Z), 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/QM7282385619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dba22ea3070c18e0c93f44e5229cb7f99f972ee19c32a4715909e7209c1ae00. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:51Z), 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/QM7282475999.