Simon Streatfeild
type: MusicGroup
description: Simon Nicolas Streatfeild (5 October 1929 – 7 December 2019) was a British-Canadian violist, conductor and teacher. Simon Nicolas Streatfeild was born in Windsor, Berkshire, England in 1929. He stu
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1972506d41c62c0df9fe5df309ff551c63ee15f4d498c62a13adec3bd957b8cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954048
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954048
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41842ddd-bd99-42b0-ab39-c98cd517a376.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41842ddd-bd99-42b0-ab39-c98cd517a376.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41842ddd-bd99-42b0-ab39-c98cd517a376
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:00:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1972506d41c62c0df9fe5df309ff551c63ee15f4d498c62a13adec3bd957b8cc","name":"Simon Streatfeild","registered_at":"2026-06-16T12:40:16Z","symbol":"NIM1054885","token_address":"0x8becdebee39c6906d63d99abcee51759755cda14","type":"artist","uuid":"41842ddd-bd99-42b0-ab39-c98cd517a376"}
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 0x1972506d41c62c0df9fe5df309ff551c63ee15f4d498c62a13adec3bd957b8cc. 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/41842ddd-bd99-42b0-ab39-c98cd517a376.json and https://artists.proofprofile.net/proofs/artist/41842ddd-bd99-42b0-ab39-c98cd517a376.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x1972506d41c62c0df9fe5df309ff551c63ee15f4d498c62a13adec3bd957b8cc","name":"Simon Streatfeild","registered_at":"2026-06-16T12:40:16Z","symbol":"NIM1054885","token_address":"0x8becdebee39c6906d63d99abcee51759755cda14","type":"artist","uuid":"41842ddd-bd99-42b0-ab39-c98cd517a376"}