Leon Mitchison
type: MusicGroup
popularity: 2
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6be4537a7a252cd9bdeaa7c838fe712d49b56da29daf6ffaa956f708802cfd59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6be4537a7a252cd9bdeaa7c838fe712d49b56da29daf6ffaa956f708802cfd59","name":"Leon Mitchison","registered_at":"2026-06-16T23:30:21Z","symbol":"NIM1209990","token_address":"0xe7633146be9e7ea71c26fac3a8102f8b869ccd82","type":"artist","uuid":"6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55"}
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 0x6be4537a7a252cd9bdeaa7c838fe712d49b56da29daf6ffaa956f708802cfd59. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55.json and https://artists.proofprofile.net/proofs/artist/6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x6be4537a7a252cd9bdeaa7c838fe712d49b56da29daf6ffaa956f708802cfd59","name":"Leon Mitchison","registered_at":"2026-06-16T23:30:21Z","symbol":"NIM1209990","token_address":"0xe7633146be9e7ea71c26fac3a8102f8b869ccd82","type":"artist","uuid":"6136fcba-fd35-4b24-a9fe-c3eb6bcf2e55"}
track: Street Scene (Female Vocal Version)
  type: MusicRecording
  duration: PT2M47S
  duration ms: 167066
  explicit: false
  by artist: Leon Mitchison
  in album: Now-Again Re:Sounds
    type: MusicAlbum
    date published: 2007-07-17
  isrc code: US2S70730013
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T15:11:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd882624950bc5dec65f53f4cc1d1e25335a1172e8cf6d562ff05b17920b678b7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960273
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960273
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2S70730013
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T15:42:38Z
  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 0xd882624950bc5dec65f53f4cc1d1e25335a1172e8cf6d562ff05b17920b678b7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US2S70730013.
    date published: 2026-07-30T15:42:38Z
  audio: Street Scene (Female Vocal Version)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.296
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
      type: PropertyValue
      value: 0.494
    additional property: Energy
      type: PropertyValue
      value: 0.933
    additional property: Speechiness
      type: PropertyValue
      value: 0.183
    additional property: Acousticness
      type: PropertyValue
      value: 0.297
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.185
    additional property: Liveness
      type: PropertyValue
      value: 0.105
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.779
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.498
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Street Scene
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168613
  explicit: false
  by artist: Leon Mitchison
  in album: Cold Heat: Heavy Funk Rarities 1968-1974 (Vol.1)
    type: MusicAlbum
    date published: 2005-03-22
  isrc code: US2S70517014
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T12:53:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0422beb395912b5702ac22627cc4bcc0e25fbcd97fed48a6fc753fb619e0aea1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959132
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959132
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2S70517014
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T13:20:46Z
  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 0x0422beb395912b5702ac22627cc4bcc0e25fbcd97fed48a6fc753fb619e0aea1. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US2S70517014.
    date published: 2026-07-22T13:20:46Z
  audio: Street Scene
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.374
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.552
    additional property: Energy
      type: PropertyValue
      value: 0.959
    additional property: Speechiness
      type: PropertyValue
      value: 0.148
    additional property: Acousticness
      type: PropertyValue
      value: 0.262
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.36
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.715
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.736
    additional property: Key Name
    additional property: Mode Name

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major