Matthias Helm
type: MusicGroup
popularity: 11
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953724
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0","name":"Matthias Helm","registered_at":"2026-06-14T19:17:57Z","symbol":"NIM0550695","token_address":"0x89f5c953c661c3bfb209b0fc01065bbc8427e568","type":"artist","uuid":"8ceb89fd-1044-4552-b9f7-ebf4c2a4349c"}
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 0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.json and https://artists.proofprofile.net/proofs/artist/8ceb89fd-1044-4552-b9f7-ebf4c2a4349c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:43:13Z
  text: {"copyright_id":"0x2d736da0b607e8d007a6fc6ddd33ede3f6a57a93bd60ca202b92da28cd2f72b0","name":"Matthias Helm","registered_at":"2026-06-14T19:17:57Z","symbol":"NIM0550695","token_address":"0x89f5c953c661c3bfb209b0fc01065bbc8427e568","type":"artist","uuid":"8ceb89fd-1044-4552-b9f7-ebf4c2a4349c"}
track: Gott der Herr ist Sonn und Schild, BWV 79: IV. Rezitativ - Gottlob, wir wissen den rechten Weg (Bass) - Live
  type: MusicRecording
  duration: PT0M58S
  duration ms: 58642
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Matthias Helm
  in album: Bachkantate, BWV 79 - Gott der Herr ist Sonn und Schild (Live)
    type: MusicAlbum
    date published: 2017-11-18
  popularity: 4
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: CH9211700130
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T19:46:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb690c580830158d1a0bfa53d55412eabe9b872f4c38ad819920a4b2334c0b89f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960456
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960456
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH9211700130
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T19:53:57Z
  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 0xb690c580830158d1a0bfa53d55412eabe9b872f4c38ad819920a4b2334c0b89f. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/CH9211700130.
    date published: 2026-07-31T19:53:57Z
  audio: Gott der Herr ist Sonn und Schild, BWV 79: IV. Rezitativ - Gottlob, wir wissen den rechten Weg (Bass) - Live
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.413
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.382
    additional property: Energy
      type: PropertyValue
      value: 0.105
    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
      value: 0.959
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.153
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.234
    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.052
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Kantate zur Ratswahl, BWV 119 "Preise, Jerusalem, den Herrn": IV. Rezitativ. "So herrlich stehst du, liebe Stadt" (Bass)
  type: MusicRecording
  duration: PT1M55S
  duration ms: 115283
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Chor & Orchester der J.S. Bach-Stiftung
  by artist: Rudolf Lutz
  by artist: Matthias Helm
  in album: Bachkantate, BWV 119 - Preise, Jerusalem, den Herrn
    type: MusicAlbum
    date published: 2015-07-31
  popularity: 1
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: CH9211100318
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T16:52:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2fc17bcdc482a8c280b72b03819cb0dc168e5b6cf987d63cc885e2c03dfcbe0d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960441
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960441
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH9211100318
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T17:29:52Z
  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 0x2fc17bcdc482a8c280b72b03819cb0dc168e5b6cf987d63cc885e2c03dfcbe0d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CH9211100318.
    date published: 2026-07-31T17:29:52Z
  audio: Kantate zur Ratswahl, BWV 119 "Preise, Jerusalem, den Herrn": IV. Rezitativ. "So herrlich stehst du, liebe Stadt" (Bass)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 128.293
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.386
    additional property: Energy
      type: PropertyValue
      value: 0.165
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Speechiness
type: PropertyValue
value: 0.039

Acousticness
type: PropertyValue
value: 0.951

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.298

Valence (Positivity)
type: PropertyValue
value: 0.221

Loudness (dB)
type: PropertyValue
value: -20.606

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Major