Jan Marcussen
type: MusicGroup
genre: neoclassical
description: A. Jan Marcussen is a preacher, and marriage counselor. He is most known for views and promotion, through writing and other methods, of eschatology and the seventh-day Sabbath. Marcussen has offered t
popularity: 7
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8fc571c124cde13085f599d4e65b681c30acafe93d336354f8752c921c39caa8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954125
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954125
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b8caab7-a989-4561-85be-6392533e9e5e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b8caab7-a989-4561-85be-6392533e9e5e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b8caab7-a989-4561-85be-6392533e9e5e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T18:27:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8fc571c124cde13085f599d4e65b681c30acafe93d336354f8752c921c39caa8","name":"Jan Marcussen","registered_at":"2026-06-17T08:44:30Z","symbol":"NIM1342174","token_address":"0xe719a4fb3183e9152c5f334b62e6ff78aea2c3c5","type":"artist","uuid":"7b8caab7-a989-4561-85be-6392533e9e5e"}
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 0x8fc571c124cde13085f599d4e65b681c30acafe93d336354f8752c921c39caa8. Chain 2 (Bitcoin): anchored in block 954125 (2026-06-17T18:27:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b8caab7-a989-4561-85be-6392533e9e5e.json and https://artists.proofprofile.net/proofs/artist/7b8caab7-a989-4561-85be-6392533e9e5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T18:27:28Z
  text: {"copyright_id":"0x8fc571c124cde13085f599d4e65b681c30acafe93d336354f8752c921c39caa8","name":"Jan Marcussen","registered_at":"2026-06-17T08:44:30Z","symbol":"NIM1342174","token_address":"0xe719a4fb3183e9152c5f334b62e6ff78aea2c3c5","type":"artist","uuid":"7b8caab7-a989-4561-85be-6392533e9e5e"}
album: Tundra
  type: MusicAlbum
  date published: 2022-09-09
album: Delta
  type: MusicAlbum
  date published: 2023-03-20
album: Tundra
  type: MusicAlbum
  date published: 2024-02-03