Mitch Apfelmus
type: MusicGroup
popularity: 4
followers: 5210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3673ec25003fde7e573398ee6b599b9c625d4631d4c4d3086370929d5c45e71
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954076
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954076
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a88e8c1-3f83-48bf-8f1c-664383533763.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a88e8c1-3f83-48bf-8f1c-664383533763.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a88e8c1-3f83-48bf-8f1c-664383533763
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T09:28:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb3673ec25003fde7e573398ee6b599b9c625d4631d4c4d3086370929d5c45e71","name":"Mitch Apfelmus","registered_at":"2026-06-17T08:23:19Z","symbol":"NIM1337130","token_address":"0x63aaefa36559f1bba07986697f7445538ed88dec","type":"artist","uuid":"7a88e8c1-3f83-48bf-8f1c-664383533763"}
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 0xb3673ec25003fde7e573398ee6b599b9c625d4631d4c4d3086370929d5c45e71. Chain 2 (Bitcoin): anchored in block 954076 (2026-06-17T09:28:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a88e8c1-3f83-48bf-8f1c-664383533763.json and https://artists.proofprofile.net/proofs/artist/7a88e8c1-3f83-48bf-8f1c-664383533763.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T09:28:47Z
  text: {"copyright_id":"0xb3673ec25003fde7e573398ee6b599b9c625d4631d4c4d3086370929d5c45e71","name":"Mitch Apfelmus","registered_at":"2026-06-17T08:23:19Z","symbol":"NIM1337130","token_address":"0x63aaefa36559f1bba07986697f7445538ed88dec","type":"artist","uuid":"7a88e8c1-3f83-48bf-8f1c-664383533763"}
album: Weil Apfelmus
  type: MusicAlbum
  date published: 2019-08-23
  track: Weil Apfelmus
    type: MusicRecording
    duration: PT1M28S
    duration ms: 88888
    explicit: false
    by artist: Mitch Apfelmus
    in album: Weil Apfelmus
      type: MusicAlbum
      date published: 2019-08-23
    isrc code: DELJ81943580
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T19:24:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x81d37960d2784e4bc670f75fd1d7501de9c503e8e81e27fe8fe47368a33a07f4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELJ81943580
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x81d37960d2784e4bc670f75fd1d7501de9c503e8e81e27fe8fe47368a33a07f4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DELJ81943580.
      date published: 2026-07-03T19:59:51Z
    audio: Weil Apfelmus
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 67.498
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.859
      additional property: Energy
        type: PropertyValue
        value: 0.572
      additional property: Speechiness
        type: PropertyValue
        value: 0.198
      additional property: Acousticness
        type: PropertyValue
        value: 0.593
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.041
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.786
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.154
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major