MAR
type: MusicGroup
description: Mar, mar or MAR may refer to: Culture Mar (title), or Mor, an honorific in Syriac Earl of Mar, an earldom in Scotland Mar., an abbreviation for March, the third month of the year in the Gregoria
popularity: 7
followers: 781
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ff55522275ff03213331424eeeac5c89a0e56686f5eb96506b74fa828adfe9d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2285ad7-f3db-4f5c-9622-83cb3727161d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2285ad7-f3db-4f5c-9622-83cb3727161d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2285ad7-f3db-4f5c-9622-83cb3727161d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
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 0x4ff55522275ff03213331424eeeac5c89a0e56686f5eb96506b74fa828adfe9d. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2285ad7-f3db-4f5c-9622-83cb3727161d.json and https://artists.proofprofile.net/proofs/artist/f2285ad7-f3db-4f5c-9622-83cb3727161d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
album: BIXXX
  type: MusicAlbum
  date published: 2021-10-01
album: HOEHIPHOP
  type: MusicAlbum
  date published: 2022-02-07
album: Perrear Contigo
  type: MusicAlbum
  date published: 2022-05-25
album: FUCK YEAH
  type: MusicAlbum
  date published: 2022-10-28
album: Entre Nubes
  type: MusicAlbum
  date published: 2023-08-23
album: Enamorada
  type: MusicAlbum
  date published: 2023-11-16
album: Nada se parece a ti
  type: MusicAlbum
  date published: 2024-06-27
album: De todo
  type: MusicAlbum
  date published: 2024-09-19
  track: De todo
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152448
    explicit: true
    by artist: MAR
    in album: De todo
      type: MusicAlbum
      date published: 2024-09-19
    isrc code: BK4DA2441976
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T08:13:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf2e05040c013629fe13a3e2aa20dbc5178a1eb6ea932d3116e34554128549748
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958384
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958384
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2441976
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T08:27:02Z
    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 0xf2e05040c013629fe13a3e2aa20dbc5178a1eb6ea932d3116e34554128549748. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/BK4DA2441976.
      date published: 2026-07-17T08:27:02Z
    audio: De todo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.022
      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: 0.811
      additional property: Energy
        type: PropertyValue
        value: 0.641
      additional property: Speechiness
        type: PropertyValue
        value: 0.058
      additional property: Acousticness
        type: PropertyValue
        value: 0.03
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.012
      additional property: Liveness
        type: PropertyValue
        value: 0.089
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.917
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.132
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: BABY (2025 Remastered Version)
  type: MusicAlbum
  date published: 2025-04-17
album: BABY (2025 Remastered Version)
  type: MusicAlbum
  date published: 2025-04-17
album: Locus
  type: MusicAlbum
  date published: 2025-06-26
album: YA SÉ
  type: MusicAlbum
  date published: 2025-08-15
album: ESPACIAL
  type: MusicAlbum
  date published: 2025-09-25