Marie Graßhoff
type: MusicGroup
popularity: 31
followers: 2859
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x96872b4db7ff33575df3d699cbabf953580a08bc2255ef50d5717a8f798f031d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/508f2390-cf3c-47b0-a9ff-a466727912e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/508f2390-cf3c-47b0-a9ff-a466727912e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/508f2390-cf3c-47b0-a9ff-a466727912e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x96872b4db7ff33575df3d699cbabf953580a08bc2255ef50d5717a8f798f031d","name":"Marie Graßhoff","registered_at":"2026-06-12T15:24:47Z","symbol":"NIM0105174","token_address":"0xc796e4bd7aba8d1facac04967c5f186e352293bf","type":"artist","uuid":"508f2390-cf3c-47b0-a9ff-a466727912e8"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96872b4db7ff33575df3d699cbabf953580a08bc2255ef50d5717a8f798f031d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/508f2390-cf3c-47b0-a9ff-a466727912e8.json and https://artists.proofprofile.net/proofs/artist/508f2390-cf3c-47b0-a9ff-a466727912e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x96872b4db7ff33575df3d699cbabf953580a08bc2255ef50d5717a8f798f031d","name":"Marie Graßhoff","registered_at":"2026-06-12T15:24:47Z","symbol":"NIM0105174","token_address":"0xc796e4bd7aba8d1facac04967c5f186e352293bf","type":"artist","uuid":"508f2390-cf3c-47b0-a9ff-a466727912e8"}
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