Margin Alexander
type: MusicGroup
genre: neoclassical
popularity: 6
followers: 2980
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7afbe629f0d69569c63aff2c889298867e7ea36c995bff580e11230340ddc91d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2098819c-8121-4139-992b-7f236c79c98b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2098819c-8121-4139-992b-7f236c79c98b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2098819c-8121-4139-992b-7f236c79c98b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7afbe629f0d69569c63aff2c889298867e7ea36c995bff580e11230340ddc91d","name":"Margin Alexander","registered_at":"2026-06-16T01:12:23Z","symbol":"NIM0890650","token_address":"0x9783f02216d7d32439643e33cf722b9ba5bbe356","type":"artist","uuid":"2098819c-8121-4139-992b-7f236c79c98b"}
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 0x7afbe629f0d69569c63aff2c889298867e7ea36c995bff580e11230340ddc91d. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2098819c-8121-4139-992b-7f236c79c98b.json and https://artists.proofprofile.net/proofs/artist/2098819c-8121-4139-992b-7f236c79c98b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x7afbe629f0d69569c63aff2c889298867e7ea36c995bff580e11230340ddc91d","name":"Margin Alexander","registered_at":"2026-06-16T01:12:23Z","symbol":"NIM0890650","token_address":"0x9783f02216d7d32439643e33cf722b9ba5bbe356","type":"artist","uuid":"2098819c-8121-4139-992b-7f236c79c98b"}
album: Cosmopolitan Sound
  type: MusicAlbum
  date published: 2018-09-17
album: Poezia
  type: MusicAlbum
  date published: 2019-12-11
album: River of Souls
  type: MusicAlbum
  date published: 2020-06-05
album: "Unheard Of..."
  type: MusicAlbum
  date published: 2020-12-25
album: Photographs Inside of an Envelope
  type: MusicAlbum
  date published: 2021-12-10
album: Fascination
  type: MusicAlbum
  date published: 2023-05-22
album: "Hotel Room Thoughts"
  type: MusicAlbum
  date published: 2024-12-15
  track: Passacaglia of Love
    type: MusicRecording
    duration: PT2M30S
    duration ms: 150115
    explicit: false
    by artist: Margin Alexander
    in album: "Hotel Room Thoughts"
      type: MusicAlbum
      date published: 2024-12-15
    genre: neoclassical
    isrc code: USY242454399
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T15:13:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa9c51a48af5d4357eead24813f9cbc08a897cb96cb18c65c21efd8cd6a163f47
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY242454399
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c51a48af5d4357eead24813f9cbc08a897cb96cb18c65c21efd8cd6a163f47. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USY242454399.
      date published: 2026-07-05T18:48:28Z
    audio: Passacaglia of Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 133.113
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.35
      additional property: Energy
        type: PropertyValue
        value: 0.31
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.982
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.94
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.178
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.913
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Poezia
  type: MusicAlbum
  date published: 2025-06-28
album: "Hotel Room Thoughts"
  type: MusicAlbum
  date published: 2025-06-29