Siets Bakker
type: MusicGroup
popularity: 12
followers: 245
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6bb0fe64447c4b7db4ef128a5c2230a820711a3645d828d9cf2aaf0cf69644c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e20a99f8-1bcf-4fcf-95ab-e4299899961d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e20a99f8-1bcf-4fcf-95ab-e4299899961d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e20a99f8-1bcf-4fcf-95ab-e4299899961d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6bb0fe64447c4b7db4ef128a5c2230a820711a3645d828d9cf2aaf0cf69644c","name":"Siets Bakker","registered_at":"2026-06-15T04:16:12Z","symbol":"NIM0679176","token_address":"0x48ac0420cbe0fd2280a71f95b52a394cfc51b2c7","type":"artist","uuid":"e20a99f8-1bcf-4fcf-95ab-e4299899961d"}
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 0xc6bb0fe64447c4b7db4ef128a5c2230a820711a3645d828d9cf2aaf0cf69644c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e20a99f8-1bcf-4fcf-95ab-e4299899961d.json and https://artists.proofprofile.net/proofs/artist/e20a99f8-1bcf-4fcf-95ab-e4299899961d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xc6bb0fe64447c4b7db4ef128a5c2230a820711a3645d828d9cf2aaf0cf69644c","name":"Siets Bakker","registered_at":"2026-06-15T04:16:12Z","symbol":"NIM0679176","token_address":"0x48ac0420cbe0fd2280a71f95b52a394cfc51b2c7","type":"artist","uuid":"e20a99f8-1bcf-4fcf-95ab-e4299899961d"}
album: Systemisch wijzer [kennis uit opstellingen die je iedere dag kunt gebruiken (Onverkort)]
  type: MusicAlbum
  date published: 2021-01-22