Cor Steyn
type: MusicGroup
popularity: 7
followers: 790
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0809c7f4b23e4cc509f7b8883dd2f31d6ef16289ba4fe8449d6e0bf27cfba920
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f97458a-0d2e-4fa3-a71e-e7045bb3124a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f97458a-0d2e-4fa3-a71e-e7045bb3124a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4f97458a-0d2e-4fa3-a71e-e7045bb3124a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0809c7f4b23e4cc509f7b8883dd2f31d6ef16289ba4fe8449d6e0bf27cfba920","name":"Cor Steyn","registered_at":"2026-06-16T17:15:29Z","symbol":"NIM1120548","token_address":"0xb62d654c74b96471a75aed2947d1a10ba1063bfd","type":"artist","uuid":"4f97458a-0d2e-4fa3-a71e-e7045bb3124a"}
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 0x0809c7f4b23e4cc509f7b8883dd2f31d6ef16289ba4fe8449d6e0bf27cfba920. 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/4f97458a-0d2e-4fa3-a71e-e7045bb3124a.json and https://artists.proofprofile.net/proofs/artist/4f97458a-0d2e-4fa3-a71e-e7045bb3124a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x0809c7f4b23e4cc509f7b8883dd2f31d6ef16289ba4fe8449d6e0bf27cfba920","name":"Cor Steyn","registered_at":"2026-06-16T17:15:29Z","symbol":"NIM1120548","token_address":"0xb62d654c74b96471a75aed2947d1a10ba1063bfd","type":"artist","uuid":"4f97458a-0d2e-4fa3-a71e-e7045bb3124a"}
album: Favorieten Van Toen
  type: MusicAlbum
  date published: 1995-01-01
album: Cityland 1936-'37
  type: MusicAlbum
  date published: 2013-02-05
album: Aan Het Magic Hammond Orgel
  type: MusicAlbum
  date published: 2015-09-01
album: And His Magic Hammond Organ
  type: MusicAlbum
  date published: 2025-01-11