Nowhere To Be Found (often abbreviated as NTBF) are an alternative metal band formed in Ericeira in 2018. The group consists of vocalist Tiago Duarte, bassist Manel Gomes, drummer Miguel Rodrigues, le
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c45510f230aa125ff9f5164133ff016cdee2acbbfb719afd3737712de1a578. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e87565b-485d-44c0-9f25-1b8989edf868.json and https://artists.proofprofile.net/proofs/artist/4e87565b-485d-44c0-9f25-1b8989edf868.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).