Räfven
type: MusicGroup
genre: swedish ballads
description: Räfven is a Swedish gypsy punk band from Gothenburg, Sweden, performing original music influenced by Eastern European folk music and the klezmer tradition. The group was formed in 2003, as a reaction
popularity: 9
followers: 3632
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x565bb37b66c397b17fd8be373c8b31deaf5da0130b0b87e761952971b93d1637
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a532c47c-9d93-4343-bd8b-d9e327d93bb9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a532c47c-9d93-4343-bd8b-d9e327d93bb9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a532c47c-9d93-4343-bd8b-d9e327d93bb9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x565bb37b66c397b17fd8be373c8b31deaf5da0130b0b87e761952971b93d1637","name":"Räfven","registered_at":"2026-06-20T07:19:50Z","symbol":"NIM1551282","token_address":"0xf11a4596e8abb15274c000737dd904f300bb20db","type":"artist","uuid":"a532c47c-9d93-4343-bd8b-d9e327d93bb9"}
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 0x565bb37b66c397b17fd8be373c8b31deaf5da0130b0b87e761952971b93d1637. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a532c47c-9d93-4343-bd8b-d9e327d93bb9.json and https://artists.proofprofile.net/proofs/artist/a532c47c-9d93-4343-bd8b-d9e327d93bb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x565bb37b66c397b17fd8be373c8b31deaf5da0130b0b87e761952971b93d1637","name":"Räfven","registered_at":"2026-06-20T07:19:50Z","symbol":"NIM1551282","token_address":"0xf11a4596e8abb15274c000737dd904f300bb20db","type":"artist","uuid":"a532c47c-9d93-4343-bd8b-d9e327d93bb9"}
album: Räfven: Live
  type: MusicAlbum
  date published: 2007-03-03
album: Next Time We Take Your Instruments
  type: MusicAlbum
  date published: 2008-09-01
album: Next Time We Take Your Instruments!
  type: MusicAlbum
  date published: 2008-09-01
album: Välkommen Till Räfvbygden
  type: MusicAlbum
  date published: 2009-04-08
album: Välkommen till Räfvbygden
  type: MusicAlbum
  date published: 2009-04-08
  track: Dagsländor och hö
    type: MusicRecording
    duration: PT2M42S
    duration ms: 162280
    explicit: false
    by artist: Räfven
    in album: Välkommen till Räfvbygden
      type: MusicAlbum
      date published: 2009-04-08
    genre: swedish ballads
    isrc code: SEVQU0900314
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T11:07:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0a083d238f058b52b135bc7db795bd7d765a76c89801a66ef516b546795d5d62
    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/SEVQU0900314
    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 0x0a083d238f058b52b135bc7db795bd7d765a76c89801a66ef516b546795d5d62. 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/SEVQU0900314.
      date published: 2026-07-22T11:35:32Z
    audio: Dagsländor och hö
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.032
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.623
      additional property: Energy
        type: PropertyValue
        value: 0.303
      additional property: Speechiness
        type: PropertyValue
        value: 0.07
      additional property: Acousticness
        type: PropertyValue
        value: 0.628
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.561
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.766
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: スウェーデンの物語
  type: MusicAlbum
  date published: 2011-08-10
album: Svensk Kultur
  type: MusicAlbum
  date published: 2011-11-23
album: Next Time We Take Your Instruments
  type: MusicAlbum
  date published: 2011-11-23
album: Räfven: Live
  type: MusicAlbum
  date published: 2011-11-23
album: Välkommen till Räfvbygden
  type: MusicAlbum
  date published: 2011-11-23
album: Svensk Kultur
  type: MusicAlbum
  date published: 2011-11-23
album: Bring Back the Dinos
  type: MusicAlbum
  date published: 2015-05-20
album: Bring Back the Dinos
  type: MusicAlbum
  date published: 2015-05-20
album: よみがえれ!キツネザウルス〜Bring Back The Dinos
  type: MusicAlbum
  date published: 2015-07-08
album: Kampen
  type: MusicAlbum
  date published: 2017-10-20
album: 15
  type: MusicAlbum
  date published: 2018-10-26
album: 15
  type: MusicAlbum
  date published: 2018-10-26
album: Emmi & Räfven
  type: MusicAlbum
  date published: 2021-08-13
album: Emmi & Räfven
  type: MusicAlbum
  date published: 2021-08-13