Dr. Méfi
type: MusicGroup
popularity: 5
followers: 89
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa107459b59ebdff881f8b4130dbb3796be5913859756185838fd64b10b217736
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d714905a-c7c7-4286-bc15-2838988424be.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d714905a-c7c7-4286-bc15-2838988424be.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d714905a-c7c7-4286-bc15-2838988424be
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa107459b59ebdff881f8b4130dbb3796be5913859756185838fd64b10b217736","name":"Dr. Méfi","registered_at":"2026-06-21T03:02:07Z","symbol":"NIM1798938","token_address":"0x6615abea807fc948adcb76bf976394ebd4171a01","type":"artist","uuid":"d714905a-c7c7-4286-bc15-2838988424be"}
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 0xa107459b59ebdff881f8b4130dbb3796be5913859756185838fd64b10b217736. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d714905a-c7c7-4286-bc15-2838988424be.json and https://artists.proofprofile.net/proofs/artist/d714905a-c7c7-4286-bc15-2838988424be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0xa107459b59ebdff881f8b4130dbb3796be5913859756185838fd64b10b217736","name":"Dr. Méfi","registered_at":"2026-06-21T03:02:07Z","symbol":"NIM1798938","token_address":"0x6615abea807fc948adcb76bf976394ebd4171a01","type":"artist","uuid":"d714905a-c7c7-4286-bc15-2838988424be"}
album: O Que Somos
  type: MusicAlbum
  date published: 2016-04-29
album: Quem Se Lembrará
  type: MusicAlbum
  date published: 2022-01-21
album: Quem Se Lembrará
  type: MusicAlbum
  date published: 2022-01-21
album: Linhas da Realidade
  type: MusicAlbum
  date published: 2022-05-30
  track: Linhas da Realidade
    type: MusicRecording
    duration: PT4M26S
    duration ms: 266086
    explicit: false
    by artist: Dr. Méfi
    in album: Linhas da Realidade
      type: MusicAlbum
      date published: 2022-05-30
    isrc code: ESA012248546
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T18:49:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2b921f49a4373117d79c0abcb6806b8fe81c690a4ae0d91a160c6da42c7e7637
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958196
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958196
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012248546
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T20:38:50Z
    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 0x2b921f49a4373117d79c0abcb6806b8fe81c690a4ae0d91a160c6da42c7e7637. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ESA012248546.
      date published: 2026-07-15T20:38:50Z
    audio: Linhas da Realidade
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.009
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.474
      additional property: Energy
        type: PropertyValue
        value: 0.756
      additional property: Speechiness
        type: PropertyValue
        value: 0.088
      additional property: Acousticness
        type: PropertyValue
        value: 0.146
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.063
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.412
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.69
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Vem e Vai
  type: MusicAlbum
  date published: 2022-07-29
album: Vem E Vai (Slow)
  type: MusicAlbum
  date published: 2022-08-19
album: Compreensão Absoluta (Ilusão)
  type: MusicAlbum
  date published: 2022-12-27
album: Relógio Voador
  type: MusicAlbum
  date published: 2024-10-04