Midi, Maxi & Efti
type: MusicGroup
description: Midi, Maxi & Efti was a Swedish musical group with African influences from the early 1990s. Their two biggest hits were «Bad Bad Boys» and «Ragga Steady». The band consisted of the two twin sisters T
popularity: 16
followers: 1322
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x138f5f06195e934aff46f7df487c57710f9ef43f5d3ae4375ceb0cfb97b6a4e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953616
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953616
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19ebe2c5-60b6-4c9b-aa24-1104385ab8cf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19ebe2c5-60b6-4c9b-aa24-1104385ab8cf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/19ebe2c5-60b6-4c9b-aa24-1104385ab8cf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:58:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x138f5f06195e934aff46f7df487c57710f9ef43f5d3ae4375ceb0cfb97b6a4e4","name":"Midi, Maxi & Efti","registered_at":"2026-06-14T07:11:06Z","symbol":"NIM0377316","token_address":"0x55c299decea146d5807a0d3f531cd0c8d0737fff","type":"artist","uuid":"19ebe2c5-60b6-4c9b-aa24-1104385ab8cf"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138f5f06195e934aff46f7df487c57710f9ef43f5d3ae4375ceb0cfb97b6a4e4. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19ebe2c5-60b6-4c9b-aa24-1104385ab8cf.json and https://artists.proofprofile.net/proofs/artist/19ebe2c5-60b6-4c9b-aa24-1104385ab8cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:58:35Z
  text: {"copyright_id":"0x138f5f06195e934aff46f7df487c57710f9ef43f5d3ae4375ceb0cfb97b6a4e4","name":"Midi, Maxi & Efti","registered_at":"2026-06-14T07:11:06Z","symbol":"NIM0377316","token_address":"0x55c299decea146d5807a0d3f531cd0c8d0737fff","type":"artist","uuid":"19ebe2c5-60b6-4c9b-aa24-1104385ab8cf"}
album: Bad Bad Boys
  type: MusicAlbum
  date published: 1991-01-01
album: Midi, Maxi & Efti
  type: MusicAlbum
  date published: 1991-01-01
  track: Go Girlie Go
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203160
    explicit: false
    by artist: Midi, Maxi & Efti
    in album: Midi, Maxi & Efti
      type: MusicAlbum
      date published: 1991-01-01
    isrc code: SEBFO0500032
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T17:58:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x78988a8c01f25400b0997141d7b20618f4545b77d7730d5b514fa3ad6d728447
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958596
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958596
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBFO0500032
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T18:42:38Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78988a8c01f25400b0997141d7b20618f4545b77d7730d5b514fa3ad6d728447. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SEBFO0500032.
      date published: 2026-07-18T18:42:38Z
    audio: Go Girlie Go
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.285
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.771
      additional property: Energy
        type: PropertyValue
        value: 0.806
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.105
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.255
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.802
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.752
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Ragga Steady
  type: MusicAlbum
  date published: 2007-01-01
album: Bad Bad Boys
  type: MusicAlbum
  date published: 2007-01-01
album: Masenko
  type: MusicAlbum
  date published: 2007-01-01
album: Culture of Youth
  type: MusicAlbum
  date published: 2007-01-01