Mark Lemhouse is an American singer, songwriter, and guitarist known for releasing critically acclaimed solo albums as well as collaborating with Black Francis of The Pixies serving as producer for th
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 0x6f1bf180efbdfd81e834aa4b30024e0ec92d43979affceac119b03bde92f5792. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.json and https://artists.proofprofile.net/proofs/artist/fafe999e-027d-45cb-8857-2b51f501e8b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).