Marcus Index
type: MusicGroup
popularity: 2
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb743d4eefca7ade9a8bfd4630275f86eedb41656a9aa9115355676bf8d51c82f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea7100d0-3ec9-42fc-b312-c907932d2f30.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ea7100d0-3ec9-42fc-b312-c907932d2f30.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ea7100d0-3ec9-42fc-b312-c907932d2f30
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb743d4eefca7ade9a8bfd4630275f86eedb41656a9aa9115355676bf8d51c82f","name":"Marcus Index","registered_at":"2026-06-21T10:39:54Z","symbol":"NIM1897096","token_address":"0x632930cb4d5bbac61c30d058fa874536fa672c37","type":"artist","uuid":"ea7100d0-3ec9-42fc-b312-c907932d2f30"}
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 0xb743d4eefca7ade9a8bfd4630275f86eedb41656a9aa9115355676bf8d51c82f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea7100d0-3ec9-42fc-b312-c907932d2f30.json and https://artists.proofprofile.net/proofs/artist/ea7100d0-3ec9-42fc-b312-c907932d2f30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xb743d4eefca7ade9a8bfd4630275f86eedb41656a9aa9115355676bf8d51c82f","name":"Marcus Index","registered_at":"2026-06-21T10:39:54Z","symbol":"NIM1897096","token_address":"0x632930cb4d5bbac61c30d058fa874536fa672c37","type":"artist","uuid":"ea7100d0-3ec9-42fc-b312-c907932d2f30"}
album: Adam Shivering
  type: MusicAlbum
  date published: 2021-06-04
album: Saddest Man
  type: MusicAlbum
  date published: 2022-11-11
album: Limits
  type: MusicAlbum
  date published: 2023-01-13
album: Aeon
  type: MusicAlbum
  date published: 2023-02-17
album: Private Music
  type: MusicAlbum
  date published: 2023-03-03
album: I Am
  type: MusicAlbum
  date published: 2023-09-29
album: Like Jacob on the Hill
  type: MusicAlbum
  date published: 2024-10-22
album: Like Jacob On The Hill
  type: MusicAlbum
  date published: 2024-11-22
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  type: MusicAlbum
  date published: 2025-01-31
album: Abuse
  type: MusicAlbum
  date published: 2025-04-18