Y/N is a 2023 novel by Esther Yi about a Korean American author of self-insert fanfiction in Berlin who flies to Seoul to find the K-pop idol Moon, whom she is obsessed with, after he abruptly retires
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 0xa7496a13ad9225e46c023dfee1699b7a1557336082183f001794b64c3c7784e4. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc961988-2367-4ce6-b22e-c55750c96826.json and https://artists.proofprofile.net/proofs/artist/bc961988-2367-4ce6-b22e-c55750c96826.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.