La Esterella
type: MusicGroup
description: La Esterella, born Ester Lambrechts (7 May 1919 – 11 April 2011) was a Belgian schlagerhttp://www.ethesis.net/kleinkunst/kleinkunst_4.htm singer. She was best known for her classic "Oh Lieve Vrouwetor
popularity: 9
followers: 1493
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9853ffc7ed7181d7de1de79a0bee8f5a7366b14a03e1204d00bb0e8b68947c66
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/836dbb9b-0284-4ae8-919f-2b63336c52b6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/836dbb9b-0284-4ae8-919f-2b63336c52b6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/836dbb9b-0284-4ae8-919f-2b63336c52b6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9853ffc7ed7181d7de1de79a0bee8f5a7366b14a03e1204d00bb0e8b68947c66","name":"La Esterella","registered_at":"2026-06-17T11:51:14Z","symbol":"NIM1386707","token_address":"0xf607e7e9fc73fad6cb62aec35d32ee3bd19e2a0d","type":"artist","uuid":"836dbb9b-0284-4ae8-919f-2b63336c52b6"}
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 0x9853ffc7ed7181d7de1de79a0bee8f5a7366b14a03e1204d00bb0e8b68947c66. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/836dbb9b-0284-4ae8-919f-2b63336c52b6.json and https://artists.proofprofile.net/proofs/artist/836dbb9b-0284-4ae8-919f-2b63336c52b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x9853ffc7ed7181d7de1de79a0bee8f5a7366b14a03e1204d00bb0e8b68947c66","name":"La Esterella","registered_at":"2026-06-17T11:51:14Z","symbol":"NIM1386707","token_address":"0xf607e7e9fc73fad6cb62aec35d32ee3bd19e2a0d","type":"artist","uuid":"836dbb9b-0284-4ae8-919f-2b63336c52b6"}
album: Master Serie
  type: MusicAlbum
  date published: 1997-01-01
album: Oh Lieve Vrouwe Toren
  type: MusicAlbum
  date published: 2002-01-01