SorgSvart
type: MusicGroup
genre: black metal
genre: folk metal
popularity: 11
followers: 1071
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x95465fae035ec96771198bd9052c82a82994b6533d7e7a94870504d7865d0ba8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953768
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953768
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c0c8de5d-7aad-4d49-ac9f-6479909bd735.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c0c8de5d-7aad-4d49-ac9f-6479909bd735.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c0c8de5d-7aad-4d49-ac9f-6479909bd735
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:30:06Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95465fae035ec96771198bd9052c82a82994b6533d7e7a94870504d7865d0ba8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0c8de5d-7aad-4d49-ac9f-6479909bd735.json and https://artists.proofprofile.net/proofs/artist/c0c8de5d-7aad-4d49-ac9f-6479909bd735.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
album: Vikingtid og Anarki
  type: MusicAlbum
  date published: 2008
album: K.U.K.
  type: MusicAlbum
  date published: 2023-08-25
  track: K.U.K.
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220500
    explicit: false
    by artist: SorgSvart
    in album: K.U.K.
      type: MusicAlbum
      date published: 2023-08-25
    genre: black metal
    genre: folk metal
    isrc code: DEP551996595
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T01:19:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc6a1ac7891d4e60761fee37c7706b0dfa364824d376fac0c93d220acd57bd2f5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP551996595
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1ac7891d4e60761fee37c7706b0dfa364824d376fac0c93d220acd57bd2f5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEP551996595.
      date published: 2026-07-06T01:25:57Z
    audio: K.U.K.
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.041
      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: 0.378
      additional property: Energy
        type: PropertyValue
        value: 0.944
      additional property: Speechiness
        type: PropertyValue
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.121
      additional property: Liveness
        type: PropertyValue
        value: 0.337
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.108
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.832
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Få Gardar og Grende i æve Attende
  type: MusicAlbum
  date published: 2024-05-01
album: Landesorg
  type: MusicAlbum
  date published: 2024-06-07