Samuel Champion
type: MusicGroup
popularity: 4
followers: 11
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf61397af9fbe835ebdfcb0705ad2fc2afab22aedf4e3754de390b69ea4531eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b31b8911-4005-4710-b61e-e326df35d858.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b31b8911-4005-4710-b61e-e326df35d858.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b31b8911-4005-4710-b61e-e326df35d858
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf61397af9fbe835ebdfcb0705ad2fc2afab22aedf4e3754de390b69ea4531eb","name":"Samuel Champion","registered_at":"2026-06-20T13:26:44Z","symbol":"NIM1620605","token_address":"0xb23d003d7f62fb553de2ea56eeefcc76bc29c643","type":"artist","uuid":"b31b8911-4005-4710-b61e-e326df35d858"}
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 0xaf61397af9fbe835ebdfcb0705ad2fc2afab22aedf4e3754de390b69ea4531eb. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b31b8911-4005-4710-b61e-e326df35d858.json and https://artists.proofprofile.net/proofs/artist/b31b8911-4005-4710-b61e-e326df35d858.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xaf61397af9fbe835ebdfcb0705ad2fc2afab22aedf4e3754de390b69ea4531eb","name":"Samuel Champion","registered_at":"2026-06-20T13:26:44Z","symbol":"NIM1620605","token_address":"0xb23d003d7f62fb553de2ea56eeefcc76bc29c643","type":"artist","uuid":"b31b8911-4005-4710-b61e-e326df35d858"}
track: Danzon
track: Polka

Danzon
type: MusicRecording
duration: PT3M31S
duration ms: 211333
explicit: false
by artist: Juventino Rosas
by artist: Alauda Ensemble
by artist: Samuel Champion
in album: Reencuentros
  type: MusicAlbum
  date published: 2004-01-01
genre: late-romantic-era
genre: latin-classical
genre: mexican-classical
isrc code: MXF580401685
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T01:23:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x267a0e157a0846cef6003b3c7be6bff515d8cb48d4302a01c8335e8a281d8b8e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF580401685
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+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 0x267a0e157a0846cef6003b3c7be6bff515d8cb48d4302a01c8335e8a281d8b8e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXF580401685.
  date published: 2026-07-02T05:09:12Z
audio: Danzon
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.515
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.302
  additional property: Energy
    type: PropertyValue
    value: 0.116
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.97
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.151
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.615
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Polka
type: MusicRecording
duration: PT2M46S
duration ms: 166413
explicit: false
by artist: Juventino Rosas
by artist: Alauda Ensemble
by artist: Samuel Champion
in album: Reencuentros
  type: MusicAlbum
  date published: 2004-01-01
genre: late-romantic-era
genre: latin-classical
genre: mexican-classical
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55f5d1f6c574ff3f525747a13987d79b45bcb446870f877e49f0256c5996464. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/MXF580401686.
  date published: 2026-07-22T15:38:35Z
audio: Polka
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.524
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.494
  additional property: Energy
    type: PropertyValue
    value: 0.208
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.904
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.064
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.475
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.051
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: MXF580401686
additional property: CopyrightID
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: 959144
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-22T15:38:35+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF580401686
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959144
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T15:38:35+00:00
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