Undergrünnen
type: MusicGroup
genre: krautrock
genre: space rock
popularity: 2
followers: 1380
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63d11828f43a1ec356ef9d0dc675e45462593d2c93a982a14e7a9120f8635799
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954069
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954069
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7900febb-5f30-4662-970d-7584df9b1c07.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7900febb-5f30-4662-970d-7584df9b1c07.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7900febb-5f30-4662-970d-7584df9b1c07
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:30:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63d11828f43a1ec356ef9d0dc675e45462593d2c93a982a14e7a9120f8635799","name":"Undergrünnen","registered_at":"2026-06-17T08:11:57Z","symbol":"NIM1334421","token_address":"0xa591bd02184b1cd0c82cca44f46f19fc065fea46","type":"artist","uuid":"7900febb-5f30-4662-970d-7584df9b1c07"}
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 0x63d11828f43a1ec356ef9d0dc675e45462593d2c93a982a14e7a9120f8635799. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7900febb-5f30-4662-970d-7584df9b1c07.json and https://artists.proofprofile.net/proofs/artist/7900febb-5f30-4662-970d-7584df9b1c07.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T08:30:25Z
  text: {"copyright_id":"0x63d11828f43a1ec356ef9d0dc675e45462593d2c93a982a14e7a9120f8635799","name":"Undergrünnen","registered_at":"2026-06-17T08:11:57Z","symbol":"NIM1334421","token_address":"0xa591bd02184b1cd0c82cca44f46f19fc065fea46","type":"artist","uuid":"7900febb-5f30-4662-970d-7584df9b1c07"}
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  type: MusicAlbum
  date published: 2015-08-19
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