David Harrow
type: MusicGroup
genre: dub
description: David Harrow was born on 29 June in London, England. He lives in Los Angeles and works as a record producer, DJ, and multimedia artist. Early life In the early 80s, David Harrow performed as a key
popularity: 15
followers: 848
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445d5983efa824ebd71df8001c15263d0c978cc54add0ecd81a9e9a48385c253. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b14dcb8a-47f0-4950-bdc1-c89fcbffa5a0.json and https://artists.proofprofile.net/proofs/artist/b14dcb8a-47f0-4950-bdc1-c89fcbffa5a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:04:42Z
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