LEEGSTAND
type: MusicGroup
popularity: 6
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcdc61f81de743da48363ea0ab5ccdcc43a228932d1a11a72de7debcee7cdfd36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a138717b-1369-4115-9fd9-d5492a0a4166.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a138717b-1369-4115-9fd9-d5492a0a4166.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a138717b-1369-4115-9fd9-d5492a0a4166
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
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 0xcdc61f81de743da48363ea0ab5ccdcc43a228932d1a11a72de7debcee7cdfd36. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a138717b-1369-4115-9fd9-d5492a0a4166.json and https://artists.proofprofile.net/proofs/artist/a138717b-1369-4115-9fd9-d5492a0a4166.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
album: Op Stand.
  type: MusicAlbum
  date published: 2023-04-24
  track: In De Baas Z’n Tijd
    type: MusicRecording
    duration: PT1M45S
    duration ms: 105459
    explicit: true
    by artist: LEEGSTAND
    in album: Op Stand.
      type: MusicAlbum
      date published: 2023-04-24
    isrc code: NLGK62300014
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T22:36:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x72a452e3476524ad169477ec0aaadfbfff7bb4a02546292b54a08dac198e5088
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958793
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958793
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLGK62300014
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T01:38:46Z
    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 0x72a452e3476524ad169477ec0aaadfbfff7bb4a02546292b54a08dac198e5088. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:46Z), 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/NLGK62300014.
      date published: 2026-07-20T01:38:46Z
    audio: In De Baas Z’n Tijd
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 101
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.706
      additional property: Energy
        type: PropertyValue
        value: 0.915
      additional property: Speechiness
        type: PropertyValue
        value: 0.093
      additional property: Acousticness
        type: PropertyValue
        value: 0.237
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.226
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.84
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.862
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
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