Da Druma
type: MusicGroup
genre: 3 step
genre: afro house
popularity: 6
followers: 520
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x28fe201641bbe63f451bd108e481601899302ec705f10c4d599e19cea7ec6270
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09c87841-73a8-4266-860b-b0780678f883.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09c87841-73a8-4266-860b-b0780678f883.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/09c87841-73a8-4266-860b-b0780678f883
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x28fe201641bbe63f451bd108e481601899302ec705f10c4d599e19cea7ec6270","name":"Da Druma","registered_at":"2026-06-15T17:00:05Z","symbol":"NIM0773199","token_address":"0x605cc928be54de5d2c370a747130761a61b78b9b","type":"artist","uuid":"09c87841-73a8-4266-860b-b0780678f883"}
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 0x28fe201641bbe63f451bd108e481601899302ec705f10c4d599e19cea7ec6270. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09c87841-73a8-4266-860b-b0780678f883.json and https://artists.proofprofile.net/proofs/artist/09c87841-73a8-4266-860b-b0780678f883.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x28fe201641bbe63f451bd108e481601899302ec705f10c4d599e19cea7ec6270","name":"Da Druma","registered_at":"2026-06-15T17:00:05Z","symbol":"NIM0773199","token_address":"0x605cc928be54de5d2c370a747130761a61b78b9b","type":"artist","uuid":"09c87841-73a8-4266-860b-b0780678f883"}
album: Akame
  type: MusicAlbum
  date published: 2021-05-14
album: Sabali
  type: MusicAlbum
  date published: 2021-11-12
album: Enigma
  type: MusicAlbum
  date published: 2021-12-30
album: Gchwihaba
  type: MusicAlbum
  date published: 2022-03-01
album: Gchwihaba
  type: MusicAlbum
  date published: 2022-03-01
album: Last Summer
  type: MusicAlbum
  date published: 2023-02-17
  track: Last Summer
album: Mumemba
  type: MusicAlbum
  date published: 2023-09-22
album: Tomorrowland EP
  type: MusicAlbum
  date published: 2023-09-29
album: Kamui
  type: MusicAlbum
  date published: 2024-12-27
album: Pulso da Batida
  type: MusicAlbum
  date published: 2025-07-04

Last Summer
type: MusicRecording
duration: PT7M24S
duration ms: 444878
explicit: false
by artist: Da Druma
in album: Last Summer
  type: MusicAlbum
  date published: 2023-02-17
genre: 3 step
genre: afro house
isrc code: GBKQU2310204
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-20T16:38:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8345db2ad5b0e550f86448db67c94fd14f3374eebfd957ac5b004579f4a7c9e5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBKQU2310204
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956302
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:30:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8345db2ad5b0e550f86448db67c94fd14f3374eebfd957ac5b004579f4a7c9e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2310204.
  date published: 2026-07-02T03:30:09Z
audio: Last Summer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.654
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.747
  additional property: Energy
    type: PropertyValue
    value: 0.841
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.04
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.699
  additional property: Liveness
    type: PropertyValue
    value: 0.683
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.443
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.984
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor