Vilkduja
type: MusicGroup
genre: cold wave
genre: neofolk
genre: post-punk
description: Vilkduja is a dark music band from Lithuania, started by Povilas Vaitkevičius, who is also the creator of the band's music and lyrics.Rimdžius, A. 2012, „Vilkduja“ – kai plaukia laivai ir žydi katės (
popularity: 12
followers: 1400
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04fea8af9b8d9c5c5d6faee1b6eb331c02378c77bb704019e6baeaaf4013bc2f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953759
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953759
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b85823b9-dd37-4305-9341-c68db80e5ac5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b85823b9-dd37-4305-9341-c68db80e5ac5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b85823b9-dd37-4305-9341-c68db80e5ac5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T08:04:42Z
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 0x04fea8af9b8d9c5c5d6faee1b6eb331c02378c77bb704019e6baeaaf4013bc2f. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b85823b9-dd37-4305-9341-c68db80e5ac5.json and https://artists.proofprofile.net/proofs/artist/b85823b9-dd37-4305-9341-c68db80e5ac5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:04:42Z
album: Vakar duona
  type: MusicAlbum
  date published: 2008-01-01
  track: Dovanok man akivarus
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246866
    explicit: false
    by artist: Vilkduja
    in album: Vakar duona
      type: MusicAlbum
      date published: 2008-01-01
    genre: cold wave
    genre: neofolk
    genre: post-punk
    isrc code: FR59R2120723
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T21:28:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc89cccb9b6f53e7e7b6658d8be18f6818358995006c24af3a8477a38537521cd
    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/FR59R2120723
    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 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 0xc89cccb9b6f53e7e7b6658d8be18f6818358995006c24af3a8477a38537521cd. 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/FR59R2120723.
      date published: 2026-07-06T01:25:57Z
    audio: Dovanok man akivarus
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.022
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.604
      additional property: Energy
        type: PropertyValue
        value: 0.654
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.165
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.412
      additional property: Liveness
        type: PropertyValue
        value: 0.238
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.307
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.555
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Nežinau
  type: MusicAlbum
  date published: 2010-05-01
  track: Kai žydi katės
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201680
    explicit: false
    by artist: Vilkduja
    in album: Nežinau
      type: MusicAlbum
      date published: 2010-05-01
    genre: cold wave
    genre: neofolk
    genre: post-punk
    isrc code: FRX202041597
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T14:05:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc946fd2c75639b1d6ced76be870d57a0659d31e5534597bf4abd9ac23cd33c91
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958746
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202041597
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:36:35Z
    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 0xc946fd2c75639b1d6ced76be870d57a0659d31e5534597bf4abd9ac23cd33c91. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FRX202041597.
      date published: 2026-07-19T15:36:35Z
    audio: Kai žydi katės
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.046
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.619
      additional property: Energy
        type: PropertyValue
        value: 0.707
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.003
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Hex Discotex
album: Cosmogonia
album: Purvinas Ir Šventas
album: REBUS
album: Numinosum

Instrumentalness
type: PropertyValue
value: 0.537

Liveness
type: PropertyValue
value: 0.23

Valence (Positivity)
type: PropertyValue
value: 0.496

Loudness (dB)
type: PropertyValue
value: -9.634

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Minor

Hex Discotex
type: MusicAlbum
date published: 2017-01-01

Cosmogonia
type: MusicAlbum
date published: 2018-02-05

Purvinas Ir Šventas
type: MusicAlbum
date published: 2019-10-03
track: Nebetilps
  type: MusicRecording
  duration: PT3M58S
  duration ms: 238333
  explicit: false
  by artist: Vilkduja
  in album: Purvinas Ir Šventas
    type: MusicAlbum
    date published: 2019-10-03
  genre: cold wave
  genre: neofolk
  genre: post-punk
  isrc code: LTE971900002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T00:52:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa7620ab375e75980ed8bfa25ebea42ebb2a323b23d9570699df463737618ed6d
  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/LTE971900002
  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 0xa7620ab375e75980ed8bfa25ebea42ebb2a323b23d9570699df463737618ed6d. 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/LTE971900002.
    date published: 2026-07-05T01:12:41Z
  audio: Nebetilps
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 159.019
    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: 0.572
    additional property: Energy
      type: PropertyValue
      value: 0.603
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.625
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.79
    additional property: Liveness
      type: PropertyValue
      value: 0.098
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.701
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.542
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

REBUS
type: MusicAlbum
date published: 2022-10-18

Numinosum
type: MusicAlbum
date published: 2024-12-12