Matti & Valentin
type: MusicGroup
genre: children's music
popularity: 3
followers: 620
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d9b170b658add49751cbfe212e0f7f8116a994057932ff9f2887fe30a4235f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/40ad7261-c8d3-405f-b498-bd6dadd8cc2e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/40ad7261-c8d3-405f-b498-bd6dadd8cc2e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/40ad7261-c8d3-405f-b498-bd6dadd8cc2e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6d9b170b658add49751cbfe212e0f7f8116a994057932ff9f2887fe30a4235f1","name":"Matti & Valentin","registered_at":"2026-06-16T12:04:46Z","symbol":"NIM1046422","token_address":"0x2f72e3d88e7a053a2d9a78b2b7a6155338bdab34","type":"artist","uuid":"40ad7261-c8d3-405f-b498-bd6dadd8cc2e"}
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 0x6d9b170b658add49751cbfe212e0f7f8116a994057932ff9f2887fe30a4235f1. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40ad7261-c8d3-405f-b498-bd6dadd8cc2e.json and https://artists.proofprofile.net/proofs/artist/40ad7261-c8d3-405f-b498-bd6dadd8cc2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
  text: {"copyright_id":"0x6d9b170b658add49751cbfe212e0f7f8116a994057932ff9f2887fe30a4235f1","name":"Matti & Valentin","registered_at":"2026-06-16T12:04:46Z","symbol":"NIM1046422","token_address":"0x2f72e3d88e7a053a2d9a78b2b7a6155338bdab34","type":"artist","uuid":"40ad7261-c8d3-405f-b498-bd6dadd8cc2e"}
album: Jolene (aus "The Voice Kids, Staffel 11") [Live]
  type: MusicAlbum
  date published: 2023-03-18
  track: Jolene (aus "The Voice Kids, Staffel 11") - Live
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176840
    explicit: false
    by artist: Matti & Valentin
    in album: Jolene (aus "The Voice Kids, Staffel 11") [Live]
      type: MusicAlbum
      date published: 2023-03-18
    genre: children's music
    isrc code: DETO32300095
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T20:06:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa1904fc7324b5497d25c4a024a4c9ed854c62c91bfea864c9a926d07e039c3ad
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETO32300095
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0xa1904fc7324b5497d25c4a024a4c9ed854c62c91bfea864c9a926d07e039c3ad. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DETO32300095.
      date published: 2026-07-06T01:26:17Z
    audio: Jolene (aus "The Voice Kids, Staffel 11") - Live
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.105
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.274
      additional property: Energy
        type: PropertyValue
        value: 0.829
      additional property: Speechiness
        type: PropertyValue
        value: 0.093
      additional property: Acousticness
        type: PropertyValue
        value: 0.023
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.687
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.333
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.254
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Seven Nation Army (aus "The Voice Kids, Staffel 11") [Live]
  type: MusicAlbum
  date published: 2023-04-22