Michael Gruber
type: MusicGroup
description: Michael Gruber may refer to: Michael Gruber (author) (born 1940), American novelist Michael Gruber (actor) (born 1964), American actor Michael Gruber (artist) (born 1965), German artist Michael G
popularity: 11
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/e0e296f7-7561-44cc-af53-a72d1cfe6c33.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0e296f7-7561-44cc-af53-a72d1cfe6c33.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e0e296f7-7561-44cc-af53-a72d1cfe6c33
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24477f82f89541c84a93531ded993f89905fc34d1f257c6af0e28d66fadba58. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0e296f7-7561-44cc-af53-a72d1cfe6c33.json and https://artists.proofprofile.net/proofs/artist/e0e296f7-7561-44cc-af53-a72d1cfe6c33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xf24477f82f89541c84a93531ded993f89905fc34d1f257c6af0e28d66fadba58","name":"Michael Gruber","registered_at":"2026-06-15T04:08:41Z","symbol":"NIM0677391","token_address":"0x3247d380b497975acd64df2fa384f95a5b3ec751","type":"artist","uuid":"e0e296f7-7561-44cc-af53-a72d1cfe6c33"}
album: Österreich lieben lernen: Entdecken Sie das Land und die schönsten Urlaubsorte, um Ihren nächsten Urlaub perfekt zu planen
  type: MusicAlbum
  date published: 2021-09-01
track: Die Flotte Franziska
  type: MusicRecording
  duration: PT2M31S
  duration ms: 151560
  explicit: false
  by artist: MaChlast
  by artist: Matthias Schorn
  by artist: Michael Gruber
  in album: Einbrennt
    type: MusicAlbum
    date published: 2022-09-12
  genre: polka
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATB991400110
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xdbbc52fbd175ece401f24d1c110973df2918ca317dd77bc7fda4c2ae84c594e7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATB991400110.
    date published: 2026-07-02T03:30:09Z
  audio: Die Flotte Franziska
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major