mf
type: MusicGroup
description: MF or mf may refer to: Biology Mossy fiber (disambiguation), in neuroscience Mycosis fungoides, a type of skin disease Myelofibrosis, a chronic clonal malignant disease Microfibril rosettes, the
popularity: 12
followers: 241
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3013e6fb1e046b8183b43825015403b6de69f4b39d562a68bf8ca4f12f3946c7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953706
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953706
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c701907-f5a8-439f-80aa-dfc41bdee89e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c701907-f5a8-439f-80aa-dfc41bdee89e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c701907-f5a8-439f-80aa-dfc41bdee89e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:14:49Z
additional property: OTSCanonicalRecord
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 0x3013e6fb1e046b8183b43825015403b6de69f4b39d562a68bf8ca4f12f3946c7. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c701907-f5a8-439f-80aa-dfc41bdee89e.json and https://artists.proofprofile.net/proofs/artist/7c701907-f5a8-439f-80aa-dfc41bdee89e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:14:49Z
album: DEMO EP
  type: MusicAlbum
  date published: 2023-01-10
album: Two Minutes Mixtape
  type: MusicAlbum
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album: Domówka explicit content
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album: Kolejny dzień
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album: Intro
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album: Pi3Rwsz3 Pi3Rd0LnięCie
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album: SMS-y
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album: Fränczyzä
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album: Ciężko być sobą
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album: To co złe czasami dobre jest
  type: MusicAlbum
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album: Albo my albo nikt
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  date published: 2024-09-16
album: Portal
  type: MusicAlbum
  date published: 2024-10-01
album: Swag&love
  type: MusicAlbum
  date published: 2024-10-16
album: Braga typie
  type: MusicAlbum
  date published: 2024-11-13
album: Peter Parker
  type: MusicAlbum
  date published: 2024-11-28
album: Idę dalej
  type: MusicAlbum
  date published: 2024-12-11
album: Adrenalina i chemia
  type: MusicAlbum
  date published: 2024-12-20
album: Szara codzienność
  type: MusicAlbum
  date published: 2025-01-15
album: Za późno
  type: MusicAlbum
  date published: 2025-02-05
  track: Za późno
    type: MusicRecording
    duration: PT1M37S
    duration ms: 97000
    explicit: true
    by artist: mf
    in album: Za późno
      type: MusicAlbum
      date published: 2025-02-05
    isrc code: QZDA62574857
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T04:02:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0bc42d9e85a4b6ca9ebaf1c4ea0a1fce576e617cc0c384ee6d8cefb19aac56d9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62574857
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x0bc42d9e85a4b6ca9ebaf1c4ea0a1fce576e617cc0c384ee6d8cefb19aac56d9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA62574857.
      date published: 2026-07-03T08:56:35Z
    audio: Za późno
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 152.048
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.788
      additional property: Energy
        type: PropertyValue
        value: 0.529
      additional property: Speechiness
        type: PropertyValue
        value: 0.172
      additional property: Acousticness
        type: PropertyValue
        value: 0.016
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.131
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.717
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.838
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Receptura
  type: MusicAlbum
  date published: 2025-02-26
album: Nie twoja sprawa
  type: MusicAlbum
  date published: 2025-04-02
album: Chwile
  type: MusicAlbum
  date published: 2025-05-07
album: Jak mf
album: Algorytm
album: Lay Up
album: Nie ma jeńców

Jak mf
type: MusicAlbum
date published: 2025-06-04

Algorytm
type: MusicAlbum
date published: 2025-07-02

Lay Up
type: MusicAlbum
date published: 2025-09-26

Nie ma jeńców
type: MusicAlbum
date published: 2025-11-07