Jeff Cifra
type: MusicGroup
popularity: 17
followers: 167
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2f48b500139303e4147aa9c22328c71ca5f21fff65227023ef9dedc8f471433
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27d9123e-632a-491c-bd7d-4a978c7a2329.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27d9123e-632a-491c-bd7d-4a978c7a2329.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27d9123e-632a-491c-bd7d-4a978c7a2329
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb2f48b500139303e4147aa9c22328c71ca5f21fff65227023ef9dedc8f471433","name":"Jeff Cifra","registered_at":"2026-06-14T08:40:45Z","symbol":"NIM0398705","token_address":"0x2cba484d5dde7295159da5e1a75b951e97203008","type":"artist","uuid":"27d9123e-632a-491c-bd7d-4a978c7a2329"}
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 0xb2f48b500139303e4147aa9c22328c71ca5f21fff65227023ef9dedc8f471433. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27d9123e-632a-491c-bd7d-4a978c7a2329.json and https://artists.proofprofile.net/proofs/artist/27d9123e-632a-491c-bd7d-4a978c7a2329.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:37:06Z
  text: {"copyright_id":"0xb2f48b500139303e4147aa9c22328c71ca5f21fff65227023ef9dedc8f471433","name":"Jeff Cifra","registered_at":"2026-06-14T08:40:45Z","symbol":"NIM0398705","token_address":"0x2cba484d5dde7295159da5e1a75b951e97203008","type":"artist","uuid":"27d9123e-632a-491c-bd7d-4a978c7a2329"}
album: Kapag Kapiling Ka (From "Limited Edition")
  type: MusicAlbum
  date published: 2021-03-12
  track: Kapag Kapiling Ka - From "Limited Edition"
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226237
    explicit: false
    by artist: Jeff Cifra
    in album: Kapag Kapiling Ka (From "Limited Edition")
      type: MusicAlbum
      date published: 2021-03-12
    isrc code: FR2X42174428
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-14T22:08:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x519a17594811f7ebdf1a15e6e6101bab74d2fb8d9869deed1ddddf52edd57cf4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958074
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958074
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42174428
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-14T22:45:25Z
    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 0x519a17594811f7ebdf1a15e6e6101bab74d2fb8d9869deed1ddddf52edd57cf4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR2X42174428.
      date published: 2026-07-14T22:45:25Z
    audio: Kapag Kapiling Ka - From "Limited Edition"
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.723
      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: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.449
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.276
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.271
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.718
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Beki Problems (Galingan Mo 'Pre!) [Music from the Original TV Series "Beki Problems"]
  type: MusicAlbum
  date published: 2021-04-02
album: Pwede Bang Ako Na Lang Ulit
  type: MusicAlbum
  date published: 2023-01-27
album: Dalawang Araw, Dalawang Buwan
  type: MusicAlbum
  date published: 2025-02-20
album: Ang Aking True Love
  type: MusicAlbum
  date published: 2025-05-09