Leander Kamson
type: MusicGroup
popularity: 15
followers: 974
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7929b7a1fb5cde463d3ebf9b9ea3a4f862b256d936003ff8190bc0589dde58b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953654
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953654
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ab8a837-aeec-47c6-b070-d53d76cc91d2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ab8a837-aeec-47c6-b070-d53d76cc91d2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ab8a837-aeec-47c6-b070-d53d76cc91d2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:26:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7929b7a1fb5cde463d3ebf9b9ea3a4f862b256d936003ff8190bc0589dde58b1","name":"Leander Kamson","registered_at":"2026-06-14T12:16:12Z","symbol":"NIM0450093","token_address":"0x4f28f74c8131c6147df6d75c32b530e6ea2ed72d","type":"artist","uuid":"4ab8a837-aeec-47c6-b070-d53d76cc91d2"}
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 0x7929b7a1fb5cde463d3ebf9b9ea3a4f862b256d936003ff8190bc0589dde58b1. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ab8a837-aeec-47c6-b070-d53d76cc91d2.json and https://artists.proofprofile.net/proofs/artist/4ab8a837-aeec-47c6-b070-d53d76cc91d2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T16:26:51Z
  text: {"copyright_id":"0x7929b7a1fb5cde463d3ebf9b9ea3a4f862b256d936003ff8190bc0589dde58b1","name":"Leander Kamson","registered_at":"2026-06-14T12:16:12Z","symbol":"NIM0450093","token_address":"0x4f28f74c8131c6147df6d75c32b530e6ea2ed72d","type":"artist","uuid":"4ab8a837-aeec-47c6-b070-d53d76cc91d2"}
album: Those Eyes
  type: MusicAlbum
  date published: 2023-03-01
  track: Those Eyes
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222002
    explicit: false
    by artist: Leander Kamson
    in album: Those Eyes
      type: MusicAlbum
      date published: 2023-03-01
    isrc code: GX8KD2318214
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T04:50:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1b97da8a6d9f4fd085d0273fbf5add80743f26148d30ee6c58e64b6a56bf9eec
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2318214
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x1b97da8a6d9f4fd085d0273fbf5add80743f26148d30ee6c58e64b6a56bf9eec. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2318214 — a six-check JSON result.
      date published: 2026-07-03T08:56:35Z
    audio: Those Eyes
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.016
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.658
      additional property: Energy
        type: PropertyValue
        value: 0.324
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.858
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.324
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.071
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Amang Thang (In My Dream)
  type: MusicAlbum
  date published: 2024-07-23
album: Agunjiubam
  type: MusicAlbum
  date published: 2024-10-16
album: Khamong
  type: MusicAlbum
  date published: 2025-04-09
album: Ti Thai Lou O
  type: MusicAlbum
  date published: 2025-05-12