Marra
type: MusicGroup
description: Marra may refer to: Marra (folklore) Marra people of Australia Marra language Marra (surname) (including a list of persons with the name) Marrah Mountains in Sudan Marra Farm in Washington, US
popularity: 22
followers: 592
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92a8f9fa84dd113ad92f00e4a7071368c57f7adc18cc4aa61eb4298f5832ffb7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8dc88643-b533-4e12-9cbc-8856fbfaeb7c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8dc88643-b533-4e12-9cbc-8856fbfaeb7c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8dc88643-b533-4e12-9cbc-8856fbfaeb7c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0x92a8f9fa84dd113ad92f00e4a7071368c57f7adc18cc4aa61eb4298f5832ffb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dc88643-b533-4e12-9cbc-8856fbfaeb7c.json and https://artists.proofprofile.net/proofs/artist/8dc88643-b533-4e12-9cbc-8856fbfaeb7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
album: HOE DAN
  type: MusicAlbum
  date published: 2021-02-13
album: HOE DAN
  type: MusicAlbum
  date published: 2021-04-02
album: Bum Bum
  type: MusicAlbum
  date published: 2021-07-08
album: Self Destroy
  type: MusicAlbum
  date published: 2022-03-24
album: Paranoid
  type: MusicAlbum
  date published: 2022-05-06
album: Diep In Me Hart
  type: MusicAlbum
  date published: 2022-06-03
  track: Diep In Me Hart
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177083
    explicit: false
    by artist: Marra
    in album: Diep In Me Hart
      type: MusicAlbum
      date published: 2022-06-03
    isrc code: NLG272206144
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T14:08:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1debfea40da96e4162dfde8e36a18d32c454388a294b9fbeec45ebf4dc0a345e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG272206144
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x1debfea40da96e4162dfde8e36a18d32c454388a294b9fbeec45ebf4dc0a345e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLG272206144.
      date published: 2026-07-05T01:12:41Z
    audio: Diep In Me Hart
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.04
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.847
      additional property: Energy
        type: PropertyValue
        value: 0.555
      additional property: Speechiness
        type: PropertyValue
        value: 0.065
      additional property: Acousticness
        type: PropertyValue
        value: 0.54
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.096
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.665
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.96
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Dichterbij
  type: MusicAlbum
  date published: 2022-06-24
album: Pijn Lijden
  type: MusicAlbum
  date published: 2022-12-09
album: Wake Up Call
  type: MusicAlbum
  date published: 2023-01-19
album: Als Ik Lieg
  type: MusicAlbum
  date published: 2023-05-05
  track: Als Ik Lieg
    type: MusicRecording
    duration: PT2M51S
    duration ms: 171789
    explicit: false
    by artist: Marra
    in album: Als Ik Lieg
      type: MusicAlbum
      date published: 2023-05-05
    isrc code: NLG272306785
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T10:12:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb4f847730361a8f5e0399fe22a0f76f933e7564b2f2ecdabfa5c656d0187b295
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959123
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959123
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLG272306785
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T11:35:32Z
    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 0xb4f847730361a8f5e0399fe22a0f76f933e7564b2f2ecdabfa5c656d0187b295. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLG272306785.
      date published: 2026-07-22T11:35:32Z
    audio: Als Ik Lieg
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.837
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Laat Je Gaan
album: Goed Advies
album: Laat Je Gaan (Sped Up Version)
album: Magie
album: Enough

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.661

Energy
type: PropertyValue
value: 0.363

Speechiness
type: PropertyValue
value: 0.05

Acousticness
type: PropertyValue
value: 0.512

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.093

Valence (Positivity)
type: PropertyValue
value: 0.651

Loudness (dB)
type: PropertyValue
value: -12.46

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Major

Laat Je Gaan
type: MusicAlbum
date published: 2024-03-29

Goed Advies
type: MusicAlbum
date published: 2024-04-18

Laat Je Gaan (Sped Up Version)
type: MusicAlbum
date published: 2024-05-23

Magie
type: MusicAlbum
date published: 2024-08-08

Enough
type: MusicAlbum
date published: 2024-08-29