"On Sight" is a song by American rapper Kanye West from his sixth studio album, Yeezus (2013). It was produced by West and Daft Punk, with additional production by Benji B and Mike Dean. The song incl
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 0x6732cc6dc3c9efa13b94b8fb18d177082000daf481c5f38e838e6e8869db27a5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/818bbdd0-7366-4278-9ae7-3ff4a7c06ea6.json and https://artists.proofprofile.net/proofs/artist/818bbdd0-7366-4278-9ae7-3ff4a7c06ea6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).