Grupa Opium
type: MusicGroup
popularity: 7
followers: 425
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4171dfe0b440d19f401403734004b5d99da97ba984283dde0d2b4377f9bf16b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d15609df-4bcb-47bf-ae19-6a735d4743d7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d15609df-4bcb-47bf-ae19-6a735d4743d7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d15609df-4bcb-47bf-ae19-6a735d4743d7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc4171dfe0b440d19f401403734004b5d99da97ba984283dde0d2b4377f9bf16b","name":"Grupa Opium","registered_at":"2026-06-21T01:12:24Z","symbol":"NIM1773726","token_address":"0xe14ce250b3052b8e9c23c62b3f3bb9f7d1bc4868","type":"artist","uuid":"d15609df-4bcb-47bf-ae19-6a735d4743d7"}
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 0xc4171dfe0b440d19f401403734004b5d99da97ba984283dde0d2b4377f9bf16b. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d15609df-4bcb-47bf-ae19-6a735d4743d7.json and https://artists.proofprofile.net/proofs/artist/d15609df-4bcb-47bf-ae19-6a735d4743d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xc4171dfe0b440d19f401403734004b5d99da97ba984283dde0d2b4377f9bf16b","name":"Grupa Opium","registered_at":"2026-06-21T01:12:24Z","symbol":"NIM1773726","token_address":"0xe14ce250b3052b8e9c23c62b3f3bb9f7d1bc4868","type":"artist","uuid":"d15609df-4bcb-47bf-ae19-6a735d4743d7"}
album: World Music Collection, Vol.1. Croatia
  type: MusicAlbum
  date published: 2019-05-31
album: World Music Collection, Vol.1 (Croatia Lika-Banija-Kordun)
  type: MusicAlbum
  date published: 2019-05-31
  track: Čovjek sa srca dva
    type: MusicRecording
    duration: PT4M31S
    duration ms: 271069
    explicit: false
    by artist: Grupa Opium
    in album: World Music Collection, Vol.1 (Croatia Lika-Banija-Kordun)
      type: MusicAlbum
      date published: 2019-05-31
    isrc code: HRA0V1900149
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:15:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdd68f64b51657371c5d6e8f10736586953f4c8e0810a23acf8b5abfed8bb41fa
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HRA0V1900149
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0xdd68f64b51657371c5d6e8f10736586953f4c8e0810a23acf8b5abfed8bb41fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/HRA0V1900149.
      date published: 2026-07-06T01:26:17Z
    audio: Čovjek sa srca dva
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.393
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.566
      additional property: Energy
        type: PropertyValue
        value: 0.573
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.364
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.221
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.879
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.134
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Harmoniku kad zasviram
    type: MusicRecording
    duration: PT3M34S
    duration ms: 214495
    explicit: false
    by artist: Grupa Opium
    in album: World Music Collection, Vol.1 (Croatia Lika-Banija-Kordun)
      type: MusicAlbum
      date published: 2019-05-31
    isrc code: HRA0V1900141
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T18:40:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1e3de44fba8f98de35b34cfb8398e2ed560917ab3c338d320d692de3510f29e4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HRA0V1900141
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T23:28:02Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3de44fba8f98de35b34cfb8398e2ed560917ab3c338d320d692de3510f29e4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HRA0V1900141.
      date published: 2026-07-03T23:28:02Z
    audio: Harmoniku kad zasviram
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 97.995
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.732
      additional property: Energy
        type: PropertyValue
        value: 0.693
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.304
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.426
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.729
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Sitna kiša rosulja
album: World Music Collection Vol. 2, Croatia (Kordun Lika Banovina)

Loudness (dB)
type: PropertyValue
value: -5.232

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major

Sitna kiša rosulja
type: MusicRecording
duration: PT3M23S
duration ms: 203174
explicit: false
by artist: Grupa Opium
in album: World Music Collection, Vol.1 (Croatia Lika-Banija-Kordun)
  type: MusicAlbum
  date published: 2019-05-31
isrc code: HRA0V1900147
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T01:36:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f7d59f6279a2e75185adb3c4444cd691eee298a1594313cb1f55129db855887
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956862
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956862
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HRA0V1900147
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T02:10:22Z
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 0x6f7d59f6279a2e75185adb3c4444cd691eee298a1594313cb1f55129db855887. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/HRA0V1900147.
  date published: 2026-07-06T02:10:22Z
audio: Sitna kiša rosulja
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 195.384
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.355
  additional property: Energy
    type: PropertyValue
    value: 0.57
  additional property: Speechiness
    type: PropertyValue
    value: 0.069
  additional property: Acousticness
    type: PropertyValue
    value: 0.486
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.613
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.932
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.124
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

World Music Collection Vol. 2, Croatia (Kordun Lika Banovina)
type: MusicAlbum
date published: 2020-11-06