sergio de strijder
type: MusicGroup
popularity: 13
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2004b342808e17926e04162081795297db4eb7ae59f764d990c3b3594def277
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9accaebe-e4ca-470e-a801-c166ee2d59d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9accaebe-e4ca-470e-a801-c166ee2d59d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9accaebe-e4ca-470e-a801-c166ee2d59d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa2004b342808e17926e04162081795297db4eb7ae59f764d990c3b3594def277","name":"sergio de strijder","registered_at":"2026-06-14T20:46:05Z","symbol":"NIM0571694","token_address":"0xcbc3830ba9f6db081b77825020bd3b58fd3e984f","type":"artist","uuid":"9accaebe-e4ca-470e-a801-c166ee2d59d0"}
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 0xa2004b342808e17926e04162081795297db4eb7ae59f764d990c3b3594def277. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9accaebe-e4ca-470e-a801-c166ee2d59d0.json and https://artists.proofprofile.net/proofs/artist/9accaebe-e4ca-470e-a801-c166ee2d59d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
  text: {"copyright_id":"0xa2004b342808e17926e04162081795297db4eb7ae59f764d990c3b3594def277","name":"sergio de strijder","registered_at":"2026-06-14T20:46:05Z","symbol":"NIM0571694","token_address":"0xcbc3830ba9f6db081b77825020bd3b58fd3e984f","type":"artist","uuid":"9accaebe-e4ca-470e-a801-c166ee2d59d0"}
album: Baby Mikelle
  type: MusicAlbum
  date published: 2023-10-30
album: Bo_go_a_dindoe
  type: MusicAlbum
  date published: 2024-04-28
album: SERGIO MIX TRACK
  type: MusicAlbum
  date published: 2024-04-29
album: LOBI SINKII
  type: MusicAlbum
  date published: 2024-08-01
album: Baby Goedemorgen
  type: MusicAlbum
  date published: 2024-09-13
album: LONGI PASI LOBI
  type: MusicAlbum
  date published: 2024-09-13
album: Asikangoma
  type: MusicAlbum
  date published: 2024-09-19
album: SWIET PAAPE
  type: MusicAlbum
  date published: 2024-09-27
album: 2FII NA DE_Sikija
  type: MusicAlbum
  date published: 2025-05-24
  track: 2FII NA DE_Sikija
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145560
    explicit: false
    by artist: sergio de strijder
    in album: 2FII NA DE_Sikija
      type: MusicAlbum
      date published: 2025-05-24
    isrc code: QZTAS2533548
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T06:53:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0e10757790ae172c3e56f630666a50ccd97b55d49cb5beba474a92fe63531477
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958256
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958256
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2533548
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T07:22:18Z
    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 0x0e10757790ae172c3e56f630666a50ccd97b55d49cb5beba474a92fe63531477. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTAS2533548.
      date published: 2026-07-16T07:22:18Z
    audio: 2FII NA DE_Sikija
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.501
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.839
      additional property: Energy
        type: PropertyValue
        value: 0.628
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.175
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.059
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.602
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.101
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor