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 0x0b71a80d9f37c958defc512e60881c109279fe31e732093f4501259510c05f4b. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6f137c6-3565-4885-929f-fca2b3596cfe.json and https://artists.proofprofile.net/proofs/artist/d6f137c6-3565-4885-929f-fca2b3596cfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
You're Still The One (Louie Lee Sessions)
First Holiday With You (Live at The Ark with EBird & Friends Holiday Show)
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 0x597d63c2c44b72c23bc1def7c76eb059da3982e21d6c2d047c9d64fc2346f8fe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZEB2493314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16dc27539b9ebd72015671702f7aa8cad079791df1acbcfa9dd1467ae61c28. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:10:55Z), 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/QZES62429265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d30fff1c045f2420889ad99eea05bc0c332773ab60dd75a32e5251e6fbb772. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:56Z), 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/QZTAW2425883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c27297f853bbbb1074adffe365b9f9b4e015a3b0ff69dd45462eb95f3530976. 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/QZZ8A2462062.