Benjamin Köhn
type: MusicGroup
popularity: 4
followers: 143
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6cce4a46b0662b360c5882bbbc61718bfb93acba26cac21678508d545541a41d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78d7bfc0-f74f-46b6-9972-906baecbf1da.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78d7bfc0-f74f-46b6-9972-906baecbf1da.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/78d7bfc0-f74f-46b6-9972-906baecbf1da
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6cce4a46b0662b360c5882bbbc61718bfb93acba26cac21678508d545541a41d","name":"Benjamin Köhn","registered_at":"2026-06-17T07:44:10Z","symbol":"NIM1327791","token_address":"0x5b669a74c82fc76ca3b23cbe055a62d45e9a29fe","type":"artist","uuid":"78d7bfc0-f74f-46b6-9972-906baecbf1da"}
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 0x6cce4a46b0662b360c5882bbbc61718bfb93acba26cac21678508d545541a41d. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78d7bfc0-f74f-46b6-9972-906baecbf1da.json and https://artists.proofprofile.net/proofs/artist/78d7bfc0-f74f-46b6-9972-906baecbf1da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0x6cce4a46b0662b360c5882bbbc61718bfb93acba26cac21678508d545541a41d","name":"Benjamin Köhn","registered_at":"2026-06-17T07:44:10Z","symbol":"NIM1327791","token_address":"0x5b669a74c82fc76ca3b23cbe055a62d45e9a29fe","type":"artist","uuid":"78d7bfc0-f74f-46b6-9972-906baecbf1da"}
album: Mayday
  type: MusicAlbum
  date published: 2024-08-30
  track: Mayday
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185190
    explicit: false
    by artist: Benjamin Köhn
    in album: Mayday
      type: MusicAlbum
      date published: 2024-08-30
    isrc code: DEAR42433540
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T07:23:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbdc1f8e7e0f270d0b15a730a7a77875f2ce44f8f55a3a490ac0dc5b0c5d6dfe7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958517
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958517
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42433540
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T07:54:29Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc1f8e7e0f270d0b15a730a7a77875f2ce44f8f55a3a490ac0dc5b0c5d6dfe7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEAR42433540.
      date published: 2026-07-18T07:54:29Z
    audio: Mayday
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.893
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.453
      additional property: Energy
        type: PropertyValue
        value: 0.746
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.318
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.178
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.934
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mayday
  type: MusicAlbum
  date published: 2024-08-30
album: Mayday Acoustic
  type: MusicAlbum
  date published: 2025-02-07
album: Today
  type: MusicAlbum
  date published: 2025-05-09