David Ritsner
type: MusicGroup
popularity: 3
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2ee37870ff02179defdfbd539601d190ac8b32fa6813bee200acf0021b5170a5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b64c264b-53f7-4e84-85a2-bd48b9ea8d0a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b64c264b-53f7-4e84-85a2-bd48b9ea8d0a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b64c264b-53f7-4e84-85a2-bd48b9ea8d0a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2ee37870ff02179defdfbd539601d190ac8b32fa6813bee200acf0021b5170a5","name":"David Ritsner","registered_at":"2026-06-20T14:40:16Z","symbol":"NIM1635691","token_address":"0x1e1dbad7d3394a72caa49ac2e8587b7a27c770cd","type":"artist","uuid":"b64c264b-53f7-4e84-85a2-bd48b9ea8d0a"}
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 0x2ee37870ff02179defdfbd539601d190ac8b32fa6813bee200acf0021b5170a5. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b64c264b-53f7-4e84-85a2-bd48b9ea8d0a.json and https://artists.proofprofile.net/proofs/artist/b64c264b-53f7-4e84-85a2-bd48b9ea8d0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0x2ee37870ff02179defdfbd539601d190ac8b32fa6813bee200acf0021b5170a5","name":"David Ritsner","registered_at":"2026-06-20T14:40:16Z","symbol":"NIM1635691","token_address":"0x1e1dbad7d3394a72caa49ac2e8587b7a27c770cd","type":"artist","uuid":"b64c264b-53f7-4e84-85a2-bd48b9ea8d0a"}
track: Tankmen´s March (From "Tractor Drivers")
  type: MusicRecording
  duration: PT2M49S
  duration ms: 169852
  explicit: false
  by artist: Petr Kirichek
  by artist: David Ritsner
  in album: Soviet Film Soundtracks (1928 - 1950), Volume 3
    type: MusicAlbum
    date published: 2015-01-19
  popularity: 11
  isrc code: QM6N21438480
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-24T15:41:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe209c0ba4dff9456462b1956ec177ceee058a9c6968c2ee0b1e70e55805f0c9a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21438480
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0xe209c0ba4dff9456462b1956ec177ceee058a9c6968c2ee0b1e70e55805f0c9a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6N21438480.
    date published: 2026-07-02T03:55:08Z
  audio: Tankmen´s March (From "Tractor Drivers")
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.829
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.696
    additional property: Energy
      type: PropertyValue
      value: 0.537
    additional property: Speechiness
      type: PropertyValue
      value: 0.132
    additional property: Acousticness
      type: PropertyValue
      value: 0.928
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.768
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.703
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.756
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Song About the Three Tankmen (From "Tractor Drivers")
  type: MusicRecording
  duration: PT3M7S
  duration ms: 187731
  explicit: false
  by artist: Nikolay Kryuchkov
  by artist: David Ritsner
  in album: Soviet Film Soundtracks (1928 - 1950), Volume 3
    type: MusicAlbum
    date published: 2015-01-19
  popularity: 2
  isrc code: QM6N21438478
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T11:36:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf034bd6c77a9420e42639c83157be71d8bd17552bc228edcde25ab906213540f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960397
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960397
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21438478
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T12:24:41Z
  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 0xf034bd6c77a9420e42639c83157be71d8bd17552bc228edcde25ab906213540f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QM6N21438478.
    date published: 2026-07-31T12:24:41Z
  audio: Song About the Three Tankmen (From "Tractor Drivers")
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 137.338
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.409
    additional property: Energy
      type: PropertyValue
      value: 0.281
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.703
    additional property: Liveness
      type: PropertyValue
      value: 0.136
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.651
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -18.574

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major