William Sihombing
type: MusicGroup
genre: indonesian pop
popularity: 4
followers: 192
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34749f3851c77161b3d084e7a1eb26cd8d3b9730205ad54ac1ed131897bc5c63
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/ba8701b6-f43f-48f5-b78d-547dbba8806a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ba8701b6-f43f-48f5-b78d-547dbba8806a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ba8701b6-f43f-48f5-b78d-547dbba8806a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x34749f3851c77161b3d084e7a1eb26cd8d3b9730205ad54ac1ed131897bc5c63","name":"William Sihombing","registered_at":"2026-06-20T17:08:06Z","symbol":"NIM1661686","token_address":"0x4eb71a3fc8ababf3ed5dc7b76877f58c32f2a4ec","type":"artist","uuid":"ba8701b6-f43f-48f5-b78d-547dbba8806a"}
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 0x34749f3851c77161b3d084e7a1eb26cd8d3b9730205ad54ac1ed131897bc5c63. 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/ba8701b6-f43f-48f5-b78d-547dbba8806a.json and https://artists.proofprofile.net/proofs/artist/ba8701b6-f43f-48f5-b78d-547dbba8806a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x34749f3851c77161b3d084e7a1eb26cd8d3b9730205ad54ac1ed131897bc5c63","name":"William Sihombing","registered_at":"2026-06-20T17:08:06Z","symbol":"NIM1661686","token_address":"0x4eb71a3fc8ababf3ed5dc7b76877f58c32f2a4ec","type":"artist","uuid":"ba8701b6-f43f-48f5-b78d-547dbba8806a"}
album: Ceban Pertama
  type: MusicAlbum
  date published: 2020-12-03
album: Putih
  type: MusicAlbum
  date published: 2021
album: Buana
  type: MusicAlbum
  date published: 2021-06-18
album: AKSARA
  type: MusicAlbum
  date published: 2023-09-01
album: Potret
  type: MusicAlbum
  date published: 2024-07-04
album: Menggila
  type: MusicAlbum
  date published: 2024-10-17
album: Samudra
  type: MusicAlbum
  date published: 2025-04-24
  track: Samudra
    type: MusicRecording
    duration: PT4M44S
    duration ms: 284889
    explicit: false
    by artist: William Sihombing
    in album: Samudra
      type: MusicAlbum
      date published: 2025-04-24
    genre: indonesian pop
    isrc code: IDB902500032
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T04:29:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xefd6bd334c781f7673b0c60926a8e635eb43727274e8a6b59c97db60393fbe27
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDB902500032
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xefd6bd334c781f7673b0c60926a8e635eb43727274e8a6b59c97db60393fbe27. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IDB902500032.
      date published: 2026-07-05T10:01:46Z
    audio: Samudra
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.978
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.5
      additional property: Energy
        type: PropertyValue
        value: 0.474
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.018
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.229
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.777
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major