Evan Nagao (born May 3, 1996) is a musician and competitive yo-yo player. He is known for being the 2018 World Yo-Yo Champion and 5 time US National Yoyo Champion (2017, 2018, 2022, 2023 1a division,
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 0x63b66cb477fc93197e7ffc419d6ee755f21febd53a8c467b4ec9dc356f9b98be. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d7e6fc0-fd16-4963-a512-262108177d29.json and https://artists.proofprofile.net/proofs/artist/5d7e6fc0-fd16-4963-a512-262108177d29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).