Belu may refer to: People Belu (Assyrian king), an early Assyrian king Octavian Bellu (born 1951), Romanian gymnastics coach Belu-Simion Fainaru (born 1959), Israeli sculptor born in Bucharest, Roma
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 0x83444ee58bce1cadd11b26f9edb1eb9d97d0002174e9705e82ce199e78da7420. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc31e247-8a4e-4a7b-aaa3-c4ca239d8f74.json and https://artists.proofprofile.net/proofs/artist/dc31e247-8a4e-4a7b-aaa3-c4ca239d8f74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).