Dadi Carvalho
type: MusicGroup
genre: mpb
popularity: 14
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca3bbdb95af24cd39eece80184eafc9664910b140b268450ca039e3caf5ad27e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87818f46-03d5-4547-ae5a-6846dac9ed49.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/87818f46-03d5-4547-ae5a-6846dac9ed49.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/87818f46-03d5-4547-ae5a-6846dac9ed49
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:05:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca3bbdb95af24cd39eece80184eafc9664910b140b268450ca039e3caf5ad27e","name":"Dadi Carvalho","registered_at":"2026-06-14T18:44:03Z","symbol":"NIM0542603","token_address":"0xc2e8a1765efbb30a8dd1122c711b33bfcb4fa245","type":"artist","uuid":"87818f46-03d5-4547-ae5a-6846dac9ed49"}
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 0xca3bbdb95af24cd39eece80184eafc9664910b140b268450ca039e3caf5ad27e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87818f46-03d5-4547-ae5a-6846dac9ed49.json and https://artists.proofprofile.net/proofs/artist/87818f46-03d5-4547-ae5a-6846dac9ed49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xca3bbdb95af24cd39eece80184eafc9664910b140b268450ca039e3caf5ad27e","name":"Dadi Carvalho","registered_at":"2026-06-14T18:44:03Z","symbol":"NIM0542603","token_address":"0xc2e8a1765efbb30a8dd1122c711b33bfcb4fa245","type":"artist","uuid":"87818f46-03d5-4547-ae5a-6846dac9ed49"}
track: Hino De Duran

Hino De Duran
type: MusicRecording
duration: PT2M59S
duration ms: 179400
explicit: false
by artist: A Cor Do Som
by artist: Chico Buarque
by artist: Armandinho Macedo
by artist: Ary Dias
by artist: Dadi Carvalho
by artist: Mu Carvalho
in album: Chico 50 Anos - O Malandro
  type: MusicAlbum
  date published: 1994-01-01
genre: axe
genre: mpb
genre: brazilian-pop
isrc code: BRUM70500009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T20:07:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x335d7066c249ff3c8c05dc9cbcdadab4a47e7354fa770a982186a1a22f3e9b3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRUM70500009
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
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: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+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 0x335d7066c249ff3c8c05dc9cbcdadab4a47e7354fa770a982186a1a22f3e9b3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRUM70500009.
  date published: 2026-06-13T12:53:06Z
audio: Hino De Duran
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.662
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.537
  additional property: Energy
    type: PropertyValue
    value: 0.648
  additional property: Speechiness
    type: PropertyValue
    value: 0.088
  additional property: Acousticness
    type: PropertyValue
    value: 0.182
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.434
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.689
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.924
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major