Frederick Riddle
type: MusicGroup
description: Frederick Craig Riddle OBE (20 April 19125 February 1995) was a British violist. He was considered to be in the line from Lionel Tertis and William Primrose, through to the violists of today such as L
popularity: 2
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9dadb0eb6a041ab405c24ad7405d6358180f38f732120a3d25549279dd490823
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70ceb311-10ca-436c-b3f6-8aef5d6b94ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70ceb311-10ca-436c-b3f6-8aef5d6b94ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/70ceb311-10ca-436c-b3f6-8aef5d6b94ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9dadb0eb6a041ab405c24ad7405d6358180f38f732120a3d25549279dd490823","name":"Frederick Riddle","registered_at":"2026-06-17T04:52:31Z","symbol":"NIM1286877","token_address":"0x6b56ed1b6a200870da4f2fc331206fbc82cdad29","type":"artist","uuid":"70ceb311-10ca-436c-b3f6-8aef5d6b94ee"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dadb0eb6a041ab405c24ad7405d6358180f38f732120a3d25549279dd490823. 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/70ceb311-10ca-436c-b3f6-8aef5d6b94ee.json and https://artists.proofprofile.net/proofs/artist/70ceb311-10ca-436c-b3f6-8aef5d6b94ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x9dadb0eb6a041ab405c24ad7405d6358180f38f732120a3d25549279dd490823","name":"Frederick Riddle","registered_at":"2026-06-17T04:52:31Z","symbol":"NIM1286877","token_address":"0x6b56ed1b6a200870da4f2fc331206fbc82cdad29","type":"artist","uuid":"70ceb311-10ca-436c-b3f6-8aef5d6b94ee"}