Larry Callahan
type: MusicGroup
popularity: 4
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x664c676f871417752dc62dcfc7bed89798f8e4f0dfcd05c3ecbcea4fdc0931d6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953958
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953958
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27618bda-6fa6-4e7d-bd1c-3f5711294409.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27618bda-6fa6-4e7d-bd1c-3f5711294409.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27618bda-6fa6-4e7d-bd1c-3f5711294409
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:52:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x664c676f871417752dc62dcfc7bed89798f8e4f0dfcd05c3ecbcea4fdc0931d6","name":"Larry Callahan","registered_at":"2026-06-16T03:15:31Z","symbol":"NIM0920063","token_address":"0x3485ff38de2b264e8ec3f76066c9cb0eeaf012d2","type":"artist","uuid":"27618bda-6fa6-4e7d-bd1c-3f5711294409"}
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 0x664c676f871417752dc62dcfc7bed89798f8e4f0dfcd05c3ecbcea4fdc0931d6. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27618bda-6fa6-4e7d-bd1c-3f5711294409.json and https://artists.proofprofile.net/proofs/artist/27618bda-6fa6-4e7d-bd1c-3f5711294409.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:52:44Z
  text: {"copyright_id":"0x664c676f871417752dc62dcfc7bed89798f8e4f0dfcd05c3ecbcea4fdc0931d6","name":"Larry Callahan","registered_at":"2026-06-16T03:15:31Z","symbol":"NIM0920063","token_address":"0x3485ff38de2b264e8ec3f76066c9cb0eeaf012d2","type":"artist","uuid":"27618bda-6fa6-4e7d-bd1c-3f5711294409"}
album: The Evolution II
  type: MusicAlbum
  date published: 2012-11-13
  track: Lose Yourself
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196213
    explicit: false
    by artist: Larry Callahan
    in album: The Evolution II
      type: MusicAlbum
      date published: 2012-11-13
    isrc code: QMLJN1200010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T09:26:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x44362e07dab119372f3efceaf395cb8a900177844042a290eb4e31ab2828f31c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958276
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958276
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMLJN1200010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T10:20:17Z
    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 0x44362e07dab119372f3efceaf395cb8a900177844042a290eb4e31ab2828f31c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QMLJN1200010.
      date published: 2026-07-16T10:20:17Z
    audio: Lose Yourself
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.959
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.513
      additional property: Energy
        type: PropertyValue
        value: 0.48
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.254
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.043
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.079
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.432
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: The Evolution II
  type: MusicAlbum
  date published: 2012-11-13