1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x67bdace19a07080579a53d6187e66177a6a9a392aa9f3de172a7cdb51af7e87b. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad3af432-608d-4382-a2df-120ea4f3376f.json and https://artists.proofprofile.net/proofs/artist/ad3af432-608d-4382-a2df-120ea4f3376f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trois petites variations sur un chemin étroit
two fauré requiems : piano & electric guitar
198 : これを見よ 人もとがめぬ恋すてふ
747 : いにしへの 野中の清水 ぬるけれど
787 : たのめつつ こぬ夜あまたになりぬれば