Sander de Heer
type: MusicGroup
popularity: 35
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66d0c0d12d8d413e02bd4c024d7d4cb1633cc0de262c3db9ba5e02d33f7dfa35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c70f06a5-0212-45cf-bf86-0930d40e4a0a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c70f06a5-0212-45cf-bf86-0930d40e4a0a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c70f06a5-0212-45cf-bf86-0930d40e4a0a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66d0c0d12d8d413e02bd4c024d7d4cb1633cc0de262c3db9ba5e02d33f7dfa35","name":"Sander de Heer","registered_at":"2026-06-12T18:05:45Z","symbol":"NIM0330969","token_address":"0xbb39551c15ffc0bb5f522a0372d8d5e726ef6ada","type":"artist","uuid":"c70f06a5-0212-45cf-bf86-0930d40e4a0a"}
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 0x66d0c0d12d8d413e02bd4c024d7d4cb1633cc0de262c3db9ba5e02d33f7dfa35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c70f06a5-0212-45cf-bf86-0930d40e4a0a.json and https://artists.proofprofile.net/proofs/artist/c70f06a5-0212-45cf-bf86-0930d40e4a0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x66d0c0d12d8d413e02bd4c024d7d4cb1633cc0de262c3db9ba5e02d33f7dfa35","name":"Sander de Heer","registered_at":"2026-06-12T18:05:45Z","symbol":"NIM0330969","token_address":"0xbb39551c15ffc0bb5f522a0372d8d5e726ef6ada","type":"artist","uuid":"c70f06a5-0212-45cf-bf86-0930d40e4a0a"}