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 0x8f032ab2747f4fe0ab3df665062b34d7887ce935feb74fe27be7d2c99f0da409. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a0d33ff-d2a8-4183-990e-d82188aa8172.json and https://artists.proofprofile.net/proofs/artist/0a0d33ff-d2a8-4183-990e-d82188aa8172.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
歪んだ鉛筆は誰かに折られないために
Yuganda Enpitsu ha Dareka ni Orarenaitameni