Madoka is both a feminine Japanese given name and a Japanese surname. Written forms Madoka can be written using different kanji characters and can mean: as a given name 円, "circle" 円花, "circle, fl
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 0x13919e0df080ba6d0342e650b17684f07d229a7e57e31b1612d3fd49ce240b2d. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29a56b9e-e172-47cd-8407-2b186bfb03c8.json and https://artists.proofprofile.net/proofs/artist/29a56b9e-e172-47cd-8407-2b186bfb03c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).