HENDRO SINAMBELA
type: MusicGroup
genre: batak
popularity: 16
followers: 538
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc8a5ecfebf8bfb824e75250f9b1e9ab8249daeaa8029c1f01735cb0e86acf570
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b18efb1-1d0c-4769-b20a-6c47981c8bf6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7b18efb1-1d0c-4769-b20a-6c47981c8bf6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7b18efb1-1d0c-4769-b20a-6c47981c8bf6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc8a5ecfebf8bfb824e75250f9b1e9ab8249daeaa8029c1f01735cb0e86acf570","name":"HENDRO SINAMBELA","registered_at":"2026-06-14T17:25:33Z","symbol":"NIM0523920","token_address":"0x42849cd372d9f90dafba76956c6662bb71be3c1f","type":"artist","uuid":"7b18efb1-1d0c-4769-b20a-6c47981c8bf6"}
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 0xc8a5ecfebf8bfb824e75250f9b1e9ab8249daeaa8029c1f01735cb0e86acf570. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b18efb1-1d0c-4769-b20a-6c47981c8bf6.json and https://artists.proofprofile.net/proofs/artist/7b18efb1-1d0c-4769-b20a-6c47981c8bf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xc8a5ecfebf8bfb824e75250f9b1e9ab8249daeaa8029c1f01735cb0e86acf570","name":"HENDRO SINAMBELA","registered_at":"2026-06-14T17:25:33Z","symbol":"NIM0523920","token_address":"0x42849cd372d9f90dafba76956c6662bb71be3c1f","type":"artist","uuid":"7b18efb1-1d0c-4769-b20a-6c47981c8bf6"}
album: HAHOLONGI AU ITO
  type: MusicAlbum
  date published: 2022-03-30
  track: HAHOLONGI AU ITO
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245043
    explicit: false
    by artist: HENDRO SINAMBELA
    in album: HAHOLONGI AU ITO
      type: MusicAlbum
      date published: 2022-03-30
    genre: batak
    isrc code: UKR6V2210489
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1588f043ffdc6f025d239181ee97280e37d297283f4f5b84119ac9ece61a2c4b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958373
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958373
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKR6V2210489
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T06:09:33Z
    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 0x1588f043ffdc6f025d239181ee97280e37d297283f4f5b84119ac9ece61a2c4b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKR6V2210489.
      date published: 2026-07-17T06:09:33Z
    audio: HAHOLONGI AU ITO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.117
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.503
      additional property: Energy
        type: PropertyValue
        value: 0.544
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.427
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.245
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.261
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.955
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: MASIHOL HIAN AUTU HO
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238641
    explicit: false
    by artist: HENDRO SINAMBELA
    in album: HAHOLONGI AU ITO
      type: MusicAlbum
      date published: 2022-03-30
    genre: batak
    isrc code: UKR6V2210497
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T10:35:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x308475f1da7c9e3792d21730657be5689a9dce176ecfb4f69324d89758deff43
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958286
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958286
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKR6V2210497
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T12:43:37Z
    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 0x308475f1da7c9e3792d21730657be5689a9dce176ecfb4f69324d89758deff43. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKR6V2210497.
      date published: 2026-07-16T12:43:37Z
    audio: MASIHOL HIAN AUTU HO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.96
      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: 0.464
      additional property: Energy
        type: PropertyValue
        value: 0.726
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.265
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.43
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.674
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -3.184

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major