Calvin Duffield
type: MusicGroup
popularity: 6
followers: 161
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a210da7148fa6804041b00d5a432bc19993f7d2e0307a19118c2f1ee774883f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953988
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953988
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d6db1eb-892f-4784-b75c-7424c357cd98.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d6db1eb-892f-4784-b75c-7424c357cd98.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2d6db1eb-892f-4784-b75c-7424c357cd98
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:23:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7a210da7148fa6804041b00d5a432bc19993f7d2e0307a19118c2f1ee774883f","name":"Calvin Duffield","registered_at":"2026-06-16T05:40:27Z","symbol":"NIM0954692","token_address":"0x769fe635cf8d0cc293bfc51068358d1bb50e7ed2","type":"artist","uuid":"2d6db1eb-892f-4784-b75c-7424c357cd98"}
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 0x7a210da7148fa6804041b00d5a432bc19993f7d2e0307a19118c2f1ee774883f. Chain 2 (Bitcoin): anchored in block 953988 (2026-06-16T18:23:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6db1eb-892f-4784-b75c-7424c357cd98.json and https://artists.proofprofile.net/proofs/artist/2d6db1eb-892f-4784-b75c-7424c357cd98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:23:32Z
  text: {"copyright_id":"0x7a210da7148fa6804041b00d5a432bc19993f7d2e0307a19118c2f1ee774883f","name":"Calvin Duffield","registered_at":"2026-06-16T05:40:27Z","symbol":"NIM0954692","token_address":"0x769fe635cf8d0cc293bfc51068358d1bb50e7ed2","type":"artist","uuid":"2d6db1eb-892f-4784-b75c-7424c357cd98"}
album: Let Me Go
  type: MusicAlbum
  date published: 2022-11-28
album: a song for daydreamers
  type: MusicAlbum
  date published: 2022-12-05
album: Farewell My Friend
  type: MusicAlbum
  date published: 2023-03-31
album: You Make Me Feel Like
  type: MusicAlbum
  date published: 2023-05-15
  track: You Make Me Feel Like
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217000
    explicit: false
    by artist: Calvin Duffield
    in album: You Make Me Feel Like
      type: MusicAlbum
      date published: 2023-05-15
    isrc code: TCAHC2352202
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T03:43:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe4df8046ec273d11038b0afe8a3a0a3aefb7b2d3e1549956973bac98acb30be7
    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/TCAHC2352202
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df8046ec273d11038b0afe8a3a0a3aefb7b2d3e1549956973bac98acb30be7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHC2352202.
      date published: 2026-07-03T08:56:35Z
    audio: You Make Me Feel Like
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.965
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.698
      additional property: Energy
        type: PropertyValue
        value: 0.396
      additional property: Speechiness
        type: PropertyValue
        value: 0.056
      additional property: Acousticness
        type: PropertyValue
        value: 0.678
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.107
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.368
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.335
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: GETS BETTER
  type: MusicAlbum
  date published: 2023-05-21
album: Lofi With You
  type: MusicAlbum
  date published: 2023-06-17
album: Timeless
  type: MusicAlbum
  date published: 2023-07-13
album: Everything <3
  type: MusicAlbum
  date published: 2023-07-18
album: Blacklight Lullaby
  type: MusicAlbum
  date published: 2023-10-13
album: Evergreen
  type: MusicAlbum
  date published: 2023-11-01
album: Ode to Rockypoo
  type: MusicAlbum
  date published: 2023-11-07
album: Communication’s Key (If You're Reading This Please Text Me Back)
  type: MusicAlbum
  date published: 2023-11-24
album: Weight
  type: MusicAlbum
  date published: 2023-12-08
album: Purple and Yellow
  type: MusicAlbum
  date published: 2023-12-21
album: space
  type: MusicAlbum
  date published: 2024-03-26
album: The Good Ol' Days Are Now
  type: MusicAlbum
  date published: 2024-05-15
album: Lonely
  type: MusicAlbum
  date published: 2024-06-15
album: I Hope You Can't Relate ,,|,,
  type: MusicAlbum
  date published: 2024-09-20
album: Electrochemical
  type: MusicAlbum
  date published: 2024-10-11
album: Music for a Library at Night
  type: MusicAlbum
  date published: 2024-11-15
album: BiPoLaRcOaStEr
  type: MusicAlbum
  date published: 2024-12-20
album: Wednesday
  type: MusicAlbum
  date published: 2025-02-12
album: you're mine all mine
  type: MusicAlbum
  date published: 2025-03-15
album: Spyglass
  type: MusicAlbum
  date published: 2025-04-01
album: Nesting Doll
  type: MusicAlbum
  date published: 2025-05-30
album: Confessions at Prom
  type: MusicAlbum
  date published: 2025-06-13
album: Shades
album: Standing There
album: Until: Tune for the Theater
album: Ghost Lights

Shades
type: MusicAlbum
date published: 2025-06-30

Standing There
type: MusicAlbum
date published: 2025-09-01

Until: Tune for the Theater
type: MusicAlbum
date published: 2025-09-11

Ghost Lights
type: MusicAlbum
date published: 2025-10-10