Sydney Nicholson
type: MusicGroup
description: Sir Sydney Hugo Nicholson (9 February 1875 – 30 May 1947) was an English choir director, organist, composer, and founder of the Royal School of Church Music (RSCM) and the compiler of The Parish Psal
popularity: 2
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x537e9837e2cce3d9d667bf9b6c972a57cab7460783c700f96121bea1013b3e24
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0320dde7-a026-4efc-ba34-48e550a6706c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0320dde7-a026-4efc-ba34-48e550a6706c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0320dde7-a026-4efc-ba34-48e550a6706c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x537e9837e2cce3d9d667bf9b6c972a57cab7460783c700f96121bea1013b3e24","name":"Sydney Nicholson","registered_at":"2026-06-15T14:33:39Z","symbol":"NIM0738230","token_address":"0xca10bfed0abb3d56cb2700bcd1fb0606aa88afb5","type":"artist","uuid":"0320dde7-a026-4efc-ba34-48e550a6706c"}
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 0x537e9837e2cce3d9d667bf9b6c972a57cab7460783c700f96121bea1013b3e24. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0320dde7-a026-4efc-ba34-48e550a6706c.json and https://artists.proofprofile.net/proofs/artist/0320dde7-a026-4efc-ba34-48e550a6706c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x537e9837e2cce3d9d667bf9b6c972a57cab7460783c700f96121bea1013b3e24","name":"Sydney Nicholson","registered_at":"2026-06-15T14:33:39Z","symbol":"NIM0738230","token_address":"0xca10bfed0abb3d56cb2700bcd1fb0606aa88afb5","type":"artist","uuid":"0320dde7-a026-4efc-ba34-48e550a6706c"}