Van Der Meer
type: MusicGroup
description: Van der Meer () is a Dutch toponymic surname meaning "from the lake". A common contracted form is Vermeer. Abroad the name has often been concatenated to Vander Meer or Vandermeer, and VanderMeer. It
popularity: 5
followers: 1440
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4dd40e2fce4b846863bc8059c2360167f7b5a995d5e753b0269cc460c59069ba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954553
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954553
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad239c6e-117c-4126-8361-d170c8310577.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad239c6e-117c-4126-8361-d170c8310577.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad239c6e-117c-4126-8361-d170c8310577
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T11:51:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4dd40e2fce4b846863bc8059c2360167f7b5a995d5e753b0269cc460c59069ba","name":"Van Der Meer","registered_at":"2026-06-20T10:00:16Z","symbol":"NIM1589850","token_address":"0x25c4042e4409b35126449a83f0d95677ad222164","type":"artist","uuid":"ad239c6e-117c-4126-8361-d170c8310577"}
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 0x4dd40e2fce4b846863bc8059c2360167f7b5a995d5e753b0269cc460c59069ba. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad239c6e-117c-4126-8361-d170c8310577.json and https://artists.proofprofile.net/proofs/artist/ad239c6e-117c-4126-8361-d170c8310577.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T11:51:30Z
  text: {"copyright_id":"0x4dd40e2fce4b846863bc8059c2360167f7b5a995d5e753b0269cc460c59069ba","name":"Van Der Meer","registered_at":"2026-06-20T10:00:16Z","symbol":"NIM1589850","token_address":"0x25c4042e4409b35126449a83f0d95677ad222164","type":"artist","uuid":"ad239c6e-117c-4126-8361-d170c8310577"}
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