Duo Lenz
type: MusicGroup
popularity: 2
followers: 177
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0bc3dec687451dd455c1eb1770f704395920da43daaba2371ec4ed3352107ea5
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/698e02a7-9166-4967-aeba-e8b84a50e95e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/698e02a7-9166-4967-aeba-e8b84a50e95e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/698e02a7-9166-4967-aeba-e8b84a50e95e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0bc3dec687451dd455c1eb1770f704395920da43daaba2371ec4ed3352107ea5","name":"Duo Lenz","registered_at":"2026-06-17T02:29:12Z","symbol":"NIM1252657","token_address":"0xd32272e247ed4fe44a68f4bd5b3b9abc2a0dce86","type":"artist","uuid":"698e02a7-9166-4967-aeba-e8b84a50e95e"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc3dec687451dd455c1eb1770f704395920da43daaba2371ec4ed3352107ea5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/698e02a7-9166-4967-aeba-e8b84a50e95e.json and https://artists.proofprofile.net/proofs/artist/698e02a7-9166-4967-aeba-e8b84a50e95e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0bc3dec687451dd455c1eb1770f704395920da43daaba2371ec4ed3352107ea5","name":"Duo Lenz","registered_at":"2026-06-17T02:29:12Z","symbol":"NIM1252657","token_address":"0xd32272e247ed4fe44a68f4bd5b3b9abc2a0dce86","type":"artist","uuid":"698e02a7-9166-4967-aeba-e8b84a50e95e"}
album: Illusie
  type: MusicAlbum
  date published: 2001-07-01
album: From the Summer Solstice
  type: MusicAlbum
  date published: 2006-12-21
  track: Dhyana
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245626
    explicit: false
    by artist: Duo Lenz
    in album: From the Summer Solstice
      type: MusicAlbum
      date published: 2006-12-21
    isrc code: USHM81377939
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T05:39:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x68b3e74a4751f9e9574dc70e0204a404e91044ef616f41edd7bfed1393c2c64a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960354
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960354
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81377939
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T05:48:18Z
    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 0x68b3e74a4751f9e9574dc70e0204a404e91044ef616f41edd7bfed1393c2c64a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USHM81377939.
      date published: 2026-07-31T05:48:18Z
    audio: Dhyana
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.808
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.476
      additional property: Energy
        type: PropertyValue
        value: 0.068
      additional property: Speechiness
        type: PropertyValue
        value: 0.113
      additional property: Acousticness
        type: PropertyValue
        value: 0.989
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.93
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.201
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.033
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Aurora
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202520
    explicit: false
    by artist: Duo Lenz
    in album: From the Summer Solstice
      type: MusicAlbum
      date published: 2006-12-21
    isrc code: USHM81377951
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-30T01:30:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xeb956b6e61cf3f7860f7d75f03e008773fb38bc05819babda97ef89e7b4dcd7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960187
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960187
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81377951
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-30T01:34:28Z
    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 0xeb956b6e61cf3f7860f7d75f03e008773fb38bc05819babda97ef89e7b4dcd7c. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USHM81377951.
      date published: 2026-07-30T01:34:28Z
    audio: Aurora
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.398
      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: 0.371
      additional property: Energy
        type: PropertyValue
        value: 0.259
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.922
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.915
      additional property: Liveness
        type: PropertyValue
        value: 0.084
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.381
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: In Sync

Loudness (dB)
type: PropertyValue
value: -18.718

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

In Sync
type: MusicAlbum
date published: 2019-05-05