Martina & Marika
type: MusicGroup
genre: finnish pop
genre: iskelmä
popularity: 10
followers: 168
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x585fb3ebce692ac1d0f7f80c7d256cfd9ff355ba4f5ed4abb6378f9523c4916f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a96e5c0f-ee16-4dfc-831e-705c3e65cdab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a96e5c0f-ee16-4dfc-831e-705c3e65cdab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a96e5c0f-ee16-4dfc-831e-705c3e65cdab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x585fb3ebce692ac1d0f7f80c7d256cfd9ff355ba4f5ed4abb6378f9523c4916f","name":"Martina & Marika","registered_at":"2026-06-20T09:13:50Z","symbol":"NIM1575710","token_address":"0x1f54b6087da2266ac3a53978d88e25b8218ff000","type":"artist","uuid":"a96e5c0f-ee16-4dfc-831e-705c3e65cdab"}
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 0x585fb3ebce692ac1d0f7f80c7d256cfd9ff355ba4f5ed4abb6378f9523c4916f. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a96e5c0f-ee16-4dfc-831e-705c3e65cdab.json and https://artists.proofprofile.net/proofs/artist/a96e5c0f-ee16-4dfc-831e-705c3e65cdab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x585fb3ebce692ac1d0f7f80c7d256cfd9ff355ba4f5ed4abb6378f9523c4916f","name":"Martina & Marika","registered_at":"2026-06-20T09:13:50Z","symbol":"NIM1575710","token_address":"0x1f54b6087da2266ac3a53978d88e25b8218ff000","type":"artist","uuid":"a96e5c0f-ee16-4dfc-831e-705c3e65cdab"}
album: Salarakkaat
  type: MusicAlbum
  date published: 2005
  track: Erittäin hyvä
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216400
    explicit: false
    by artist: Martina & Marika
    in album: Salarakkaat
      type: MusicAlbum
      date published: 2005
    genre: finnish pop
    genre: iskelmä
    isrc code: FIKFK0500064
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T01:22:44+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb24a745c73b30851ff0f2c46a46aad9cb23f99382243c6de2e4dd1594cd23b59
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FIKFK0500064
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xb24a745c73b30851ff0f2c46a46aad9cb23f99382243c6de2e4dd1594cd23b59. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FIKFK0500064.
      date published: 2026-07-04T10:04:33Z
    audio: Erittäin hyvä
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.011
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.623
      additional property: Energy
        type: PropertyValue
        value: 0.93
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.043
      additional property: Liveness
        type: PropertyValue
        value: 0.751
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.65
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.031
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major