Mark Grobner & Ken Kolodner
type: MusicGroup
popularity: 3
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7e3619d95c25d7e6fe74152b08865e026317e2423db7aae9a56ef1039abbbc9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7e3619d95c25d7e6fe74152b08865e026317e2423db7aae9a56ef1039abbbc9","name":"Mark Grobner & Ken Kolodner","registered_at":"2026-06-20T22:33:04Z","symbol":"NIM1735444","token_address":"0xe97a107909936d687d08042610439c4ab660717e","type":"artist","uuid":"c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0"}
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 0xb7e3619d95c25d7e6fe74152b08865e026317e2423db7aae9a56ef1039abbbc9. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0.json and https://artists.proofprofile.net/proofs/artist/c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xb7e3619d95c25d7e6fe74152b08865e026317e2423db7aae9a56ef1039abbbc9","name":"Mark Grobner & Ken Kolodner","registered_at":"2026-06-20T22:33:04Z","symbol":"NIM1735444","token_address":"0xe97a107909936d687d08042610439c4ab660717e","type":"artist","uuid":"c9a0bb5f-b55f-4676-8a6b-3353cbddb1e0"}
album: SunRise (Hammered Dulcimer Solos and Duets)
  type: MusicAlbum
  date published: 2011-07-28
  track: Bonny At Morn
    type: MusicRecording
    duration: PT2M16S
    duration ms: 136573
    explicit: false
    by artist: Mark Grobner & Ken Kolodner
    in album: SunRise (Hammered Dulcimer Solos and Duets)
      type: MusicAlbum
      date published: 2011-07-28
    isrc code: USHM91138772
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T04:49:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8378bf1e10e9a89319a3d977d2149e823bd0155e020a29bc6fdafdee23c04656
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956891
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956891
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91138772
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:16:32Z
    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 0x8378bf1e10e9a89319a3d977d2149e823bd0155e020a29bc6fdafdee23c04656. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM91138772.
      date published: 2026-07-06T07:16:32Z
    audio: Bonny At Morn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.565
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.365
      additional property: Energy
        type: PropertyValue
        value: 0.223
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.894
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.124
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.167
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor