Hamlet and His Gravediggers
type: MusicGroup
genre: finnish rock
popularity: 2
followers: 109
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb327f70bffd094e26395bfba9125b6ff07a0dcb1b89ae73cac2283f0668baef3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad502643-65b4-470b-aba8-ae3060fb3ede.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ad502643-65b4-470b-aba8-ae3060fb3ede.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ad502643-65b4-470b-aba8-ae3060fb3ede
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb327f70bffd094e26395bfba9125b6ff07a0dcb1b89ae73cac2283f0668baef3","name":"Hamlet and His Gravediggers","registered_at":"2026-06-20T10:32:17Z","symbol":"NIM1591964","token_address":"0x7a46597cd2c432c89ac6d640d1788a4f38b3515e","type":"artist","uuid":"ad502643-65b4-470b-aba8-ae3060fb3ede"}
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 0xb327f70bffd094e26395bfba9125b6ff07a0dcb1b89ae73cac2283f0668baef3. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad502643-65b4-470b-aba8-ae3060fb3ede.json and https://artists.proofprofile.net/proofs/artist/ad502643-65b4-470b-aba8-ae3060fb3ede.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0xb327f70bffd094e26395bfba9125b6ff07a0dcb1b89ae73cac2283f0668baef3","name":"Hamlet and His Gravediggers","registered_at":"2026-06-20T10:32:17Z","symbol":"NIM1591964","token_address":"0x7a46597cd2c432c89ac6d640d1788a4f38b3515e","type":"artist","uuid":"ad502643-65b4-470b-aba8-ae3060fb3ede"}
album: Rikokseni Löyhkää
  type: MusicAlbum
  date published: 2020-07-28
album: On Hieno Mieli Rikki
  type: MusicAlbum
  date published: 2020-08-10
album: Olla Vai Ei Olla
  type: MusicAlbum
  date published: 2020-08-30
album: Hamlet
  type: MusicAlbum
  date published: 2021-09-16