Harry Sparnaay
type: MusicGroup
genre: mexican indie
description: thumb|Harry Sparnaay, 1975 Harry Sparnaay (14 April 1944 in Amsterdam – 12 December 2017 in Lloret de Mar, Girona, Spain) was a noted Dutch bass clarinetist, composer, and teacher. Biography Harry Sp
popularity: 3
followers: 501
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9223cad8abad7dbe9e25937251f99d92ad5ab501f5d433276020a78f6125216f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953943
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953943
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/216b8366-d01d-4027-b374-229890143d85.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/216b8366-d01d-4027-b374-229890143d85.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/216b8366-d01d-4027-b374-229890143d85
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:59:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9223cad8abad7dbe9e25937251f99d92ad5ab501f5d433276020a78f6125216f","name":"Harry Sparnaay","registered_at":"2026-06-16T01:11:08Z","symbol":"NIM0890357","token_address":"0xb541e8dcb66b60e5f1100a9380e52159a27bdee3","type":"artist","uuid":"216b8366-d01d-4027-b374-229890143d85"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9223cad8abad7dbe9e25937251f99d92ad5ab501f5d433276020a78f6125216f. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/216b8366-d01d-4027-b374-229890143d85.json and https://artists.proofprofile.net/proofs/artist/216b8366-d01d-4027-b374-229890143d85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:59:32Z
  text: {"copyright_id":"0x9223cad8abad7dbe9e25937251f99d92ad5ab501f5d433276020a78f6125216f","name":"Harry Sparnaay","registered_at":"2026-06-16T01:11:08Z","symbol":"NIM0890357","token_address":"0xb541e8dcb66b60e5f1100a9380e52159a27bdee3","type":"artist","uuid":"216b8366-d01d-4027-b374-229890143d85"}
album: S - Clarinet Baix i Electrònica
  type: MusicAlbum
  date published: 2005-11-05
album: Ladder Of Escape No. 1
  type: MusicAlbum
  date published: 2014-01-01
album: Ladder of Escape No. 1
  type: MusicAlbum
  date published: 2014-01-01