Lieve Bertha
type: MusicGroup
genre: nederpop
popularity: 5
followers: 1693
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc0f9e1a72698a2846f06c0314c4b001cb3487e5d2a70c0a1592b6c2a2aa95cfb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f076fd2c-3637-4b4e-9be2-a88d602ae545.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f076fd2c-3637-4b4e-9be2-a88d602ae545.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f076fd2c-3637-4b4e-9be2-a88d602ae545
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc0f9e1a72698a2846f06c0314c4b001cb3487e5d2a70c0a1592b6c2a2aa95cfb","name":"Lieve Bertha","registered_at":"2026-06-21T12:52:29Z","symbol":"NIM1928386","token_address":"0x392933d55dd6c795e2a59b38f67839c812ded8b2","type":"artist","uuid":"f076fd2c-3637-4b4e-9be2-a88d602ae545"}
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 0xc0f9e1a72698a2846f06c0314c4b001cb3487e5d2a70c0a1592b6c2a2aa95cfb. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f076fd2c-3637-4b4e-9be2-a88d602ae545.json and https://artists.proofprofile.net/proofs/artist/f076fd2c-3637-4b4e-9be2-a88d602ae545.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xc0f9e1a72698a2846f06c0314c4b001cb3487e5d2a70c0a1592b6c2a2aa95cfb","name":"Lieve Bertha","registered_at":"2026-06-21T12:52:29Z","symbol":"NIM1928386","token_address":"0x392933d55dd6c795e2a59b38f67839c812ded8b2","type":"artist","uuid":"f076fd2c-3637-4b4e-9be2-a88d602ae545"}
album: Meisje in Het Gras
  type: MusicAlbum
  date published: 2012-02-03
album: Ongekust
  type: MusicAlbum
  date published: 2013-02-20
album: Er Moet Een Meisje Bij
  type: MusicAlbum
  date published: 2013-09-26
album: Live Bertha
  type: MusicAlbum
  date published: 2018-05-31
album: Metromannen
  type: MusicAlbum
  date published: 2019-02-02
album: Hoe Kan Dat Nou
  type: MusicAlbum
  date published: 2020-02-03