Bibi Dumon Tak
type: MusicGroup
description: Margaretha Anna (Bibi) Dumon Tak (born 21 December 1964) is a Dutch writer of children's literature. After completing her degree in Dutch Literature, in 2001 Bibi Dumon Tak began her career as a chil
popularity: 9
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7576d6d8ff72297fcb6e059988a9ac1bc517579b0ded6102bc4fbf67d4ac38f6
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/4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7576d6d8ff72297fcb6e059988a9ac1bc517579b0ded6102bc4fbf67d4ac38f6","name":"Bibi Dumon Tak","registered_at":"2026-06-16T17:26:49Z","symbol":"NIM1123253","token_address":"0xc500b6963661c8ad55ad8cbf0207419b8372b871","type":"artist","uuid":"4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38"}
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 0x7576d6d8ff72297fcb6e059988a9ac1bc517579b0ded6102bc4fbf67d4ac38f6. 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/4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38.json and https://artists.proofprofile.net/proofs/artist/4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x7576d6d8ff72297fcb6e059988a9ac1bc517579b0ded6102bc4fbf67d4ac38f6","name":"Bibi Dumon Tak","registered_at":"2026-06-16T17:26:49Z","symbol":"NIM1123253","token_address":"0xc500b6963661c8ad55ad8cbf0207419b8372b871","type":"artist","uuid":"4ffb144f-5ccb-48d6-a3da-6c0c94ca5b38"}
album: Kuckuck, Krake, Kakerlake. Das etwas andere Tierhörbuch (Ungekürzte Lesung)
  type: MusicAlbum
  date published: 2010-01-01
album: In een groen knollenland [Een schotschrift tegen de jacht (Onverkort)]
  type: MusicAlbum
  date published: 2021-11-19
album: Regenwurm und Anakonda (Was Tiere über sich erzählen)
  type: MusicAlbum
  date published: 2025-01-31