Meermens
type: MusicGroup
popularity: 4
followers: 890
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09b0da3761459b10a606c68c3c0d5d3b8e519a5100709150b8894f801f0c360d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/645fd7fc-9903-44a8-9ec8-f99fe3dcf54c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/645fd7fc-9903-44a8-9ec8-f99fe3dcf54c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/645fd7fc-9903-44a8-9ec8-f99fe3dcf54c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x09b0da3761459b10a606c68c3c0d5d3b8e519a5100709150b8894f801f0c360d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/645fd7fc-9903-44a8-9ec8-f99fe3dcf54c.json and https://artists.proofprofile.net/proofs/artist/645fd7fc-9903-44a8-9ec8-f99fe3dcf54c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Zever, Zalving en Een Zeemanslied
  type: MusicAlbum
  date published: 2019-12-18
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  type: MusicAlbum
  date published: 2020-12-04
album: Newton
  type: MusicAlbum
  date published: 2021-08-31
album: Sneeuwman
  type: MusicAlbum
  date published: 2022-03-21
album: Kille Geest
  type: MusicAlbum
  date published: 2023-07-01
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  type: MusicAlbum
  date published: 2024-06-07
album: Ridder (Live At Night of the Proms SE)
  type: MusicAlbum
  date published: 2024-10-13
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  type: MusicAlbum
  date published: 2025-01-11
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  type: MusicAlbum
  date published: 2025-05-01
album: Rosemarie
  type: MusicAlbum
  date published: 2025-08-29