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 0x67fc6aa740d1cfa2f86b3306ec2e9182b1646b1a6d0d57f0318d68acb88ddaca. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee9ebde6-bca1-4197-ba98-0e2ee2949431.json and https://artists.proofprofile.net/proofs/artist/ee9ebde6-bca1-4197-ba98-0e2ee2949431.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aurora (Music from Morehead Planetarium's "Symphony Under the Stars")
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 0x2211f75a71b5b3d44821a5efec5ffa21cf9c948e1430b22d4938139e41482fcc. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:13:26Z), 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/QZPLR2350412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec62ac3db7c416204ec84787bf53ad7ff048e8e2432ae93425841f565e76f00. 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/QZMEQ2486882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d8da2566ab06cc5602f38d8cc6020625fea98b89e7b5b76526895e2f197811. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:19:34Z), 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/QZK6P2541095.