William Tscham
type: MusicGroup
popularity: 3
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc27785865ceedd12b4921ad2fb8f78b328570c53a79592b295126e4fa9e8add1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e85a5f0-86e2-4de6-aa0d-b96c8f45959e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e85a5f0-86e2-4de6-aa0d-b96c8f45959e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e85a5f0-86e2-4de6-aa0d-b96c8f45959e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc27785865ceedd12b4921ad2fb8f78b328570c53a79592b295126e4fa9e8add1","name":"William Tscham","registered_at":"2026-06-17T09:42:02Z","symbol":"NIM1355899","token_address":"0x0c0532903baa588dbe20ceac16c06dfa5418a02f","type":"artist","uuid":"7e85a5f0-86e2-4de6-aa0d-b96c8f45959e"}
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 0xc27785865ceedd12b4921ad2fb8f78b328570c53a79592b295126e4fa9e8add1. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e85a5f0-86e2-4de6-aa0d-b96c8f45959e.json and https://artists.proofprofile.net/proofs/artist/7e85a5f0-86e2-4de6-aa0d-b96c8f45959e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0xc27785865ceedd12b4921ad2fb8f78b328570c53a79592b295126e4fa9e8add1","name":"William Tscham","registered_at":"2026-06-17T09:42:02Z","symbol":"NIM1355899","token_address":"0x0c0532903baa588dbe20ceac16c06dfa5418a02f","type":"artist","uuid":"7e85a5f0-86e2-4de6-aa0d-b96c8f45959e"}
album: Closer W/ You
  type: MusicAlbum
  date published: 2022-07-25
album: You Know What I Want
  type: MusicAlbum
  date published: 2022-12-30
album: Dimanche soir
  type: MusicAlbum
  date published: 2024-05-12
  track: Dimanche soir
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168000
    explicit: false
    by artist: William Tscham
    in album: Dimanche soir
      type: MusicAlbum
      date published: 2024-05-12
    isrc code: TCAID2438505
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T08:30:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x99f49ab2ccadd7fd625ec894c6dbc2d6b9345d93389b223656f9d62e684e76f7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958987
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958987
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAID2438505
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T09:04:56Z
    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 0x99f49ab2ccadd7fd625ec894c6dbc2d6b9345d93389b223656f9d62e684e76f7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCAID2438505.
      date published: 2026-07-21T09:04:56Z
    audio: Dimanche soir
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.008
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.856
      additional property: Energy
        type: PropertyValue
        value: 0.563
      additional property: Speechiness
        type: PropertyValue
        value: 0.059
      additional property: Acousticness
        type: PropertyValue
        value: 0.177
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.703
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.941
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.632
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: ADDICTION
  type: MusicAlbum
  date published: 2024-08-05
album: Hier soir
  type: MusicAlbum
  date published: 2025-06-08