Fumi (ふみ in hiragana or フミ in katakana) is a feminine Japanese given name. Written forms Forms in kanji include: 史, "history" 文, "sentence" 二三, "two, three" 芙美, "lotus, beauty" The name can als
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa681da21d4df8ea26dba06a118bd64435f6f4ac4597f4d02a8519824d80037b0. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfe611fe-9d9d-404f-a1e4-33f94774127f.json and https://artists.proofprofile.net/proofs/artist/dfe611fe-9d9d-404f-a1e4-33f94774127f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).