Büro21
type: MusicGroup
popularity: 7
followers: 1431
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee600ad9f3a1d38f8ab81df7b645b8864fc8ef702d35f82b1efe69d8640eb0e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953875
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953875
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/07f726f1-15bd-45d5-86d1-8a7e3e3ede6e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/07f726f1-15bd-45d5-86d1-8a7e3e3ede6e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/07f726f1-15bd-45d5-86d1-8a7e3e3ede6e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:12:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xee600ad9f3a1d38f8ab81df7b645b8864fc8ef702d35f82b1efe69d8640eb0e5","name":"Büro21","registered_at":"2026-06-15T16:18:33Z","symbol":"NIM0763274","token_address":"0x60a9b5b797f5cac0a236522ac7375053b76b1e0b","type":"artist","uuid":"07f726f1-15bd-45d5-86d1-8a7e3e3ede6e"}
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 0xee600ad9f3a1d38f8ab81df7b645b8864fc8ef702d35f82b1efe69d8640eb0e5. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07f726f1-15bd-45d5-86d1-8a7e3e3ede6e.json and https://artists.proofprofile.net/proofs/artist/07f726f1-15bd-45d5-86d1-8a7e3e3ede6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xee600ad9f3a1d38f8ab81df7b645b8864fc8ef702d35f82b1efe69d8640eb0e5","name":"Büro21","registered_at":"2026-06-15T16:18:33Z","symbol":"NIM0763274","token_address":"0x60a9b5b797f5cac0a236522ac7375053b76b1e0b","type":"artist","uuid":"07f726f1-15bd-45d5-86d1-8a7e3e3ede6e"}
album: Sampler 1
  type: MusicAlbum
  date published: 2019-08-02
album: Sampler 2
  type: MusicAlbum
  date published: 2019-12-21
album: Solos mit Style
  type: MusicAlbum
  date published: 2020-03-07
album: Sampler 3
  type: MusicAlbum
  date published: 2020-04-24
album: Mein Team
  type: MusicAlbum
  date published: 2022-01-07
album: Work Hard Play Hard
  type: MusicAlbum
  date published: 2022-02-25
album: Oh My God
  type: MusicAlbum
  date published: 2022-04-01
album: Nein To Five
  type: MusicAlbum
  date published: 2022-04-08
album: Urlaub
  type: MusicAlbum
  date published: 2022-07-21
album: Floß
  type: MusicAlbum
  date published: 2022-10-28
album: Heutzutage
  type: MusicAlbum
  date published: 2022-11-18
album: Leichen
  type: MusicAlbum
  date published: 2022-12-09
album: Wir haben Zeit
  type: MusicAlbum
  date published: 2022-12-30
album: Sampler 4
  type: MusicAlbum
  date published: 2023-07-14
album: Piece in den Socken
  type: MusicAlbum
  date published: 2024-12-13
album: 2025
  type: MusicAlbum
  date published: 2025-02-28
track: Piece in den Socken

Piece in den Socken
type: MusicRecording
duration: PT2M43S
duration ms: 163414
explicit: false
by artist: Büro21
by artist: Preussisch Gangstar
in album: Most Wanted 7
  type: MusicAlbum
  date published: 2024-12-13
isrc code: QMDA72475982
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:49:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a79acc6ab5aac285839b07004a297de0cd2b50944763f2fcac923baf3939dc3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72475982
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a79acc6ab5aac285839b07004a297de0cd2b50944763f2fcac923baf3939dc3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA72475982.
  date published: 2026-07-08T03:53:27Z
audio: Piece in den Socken
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.816
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.727
  additional property: Energy
    type: PropertyValue
    value: 0.887
  additional property: Speechiness
    type: PropertyValue
    value: 0.115
  additional property: Acousticness
    type: PropertyValue
    value: 0.106
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.721
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.798
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major