Antton Valverde
type: MusicGroup
popularity: 4
followers: 1398
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x603ca8a3e632953c992f6e8a23b4dada0f251f80ce6057a580cb5538324b15ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c357693-149d-4863-90cf-2bdb4bcb3a92.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c357693-149d-4863-90cf-2bdb4bcb3a92.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c357693-149d-4863-90cf-2bdb4bcb3a92
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x603ca8a3e632953c992f6e8a23b4dada0f251f80ce6057a580cb5538324b15ad","name":"Antton Valverde","registered_at":"2026-06-16T21:45:49Z","symbol":"NIM1185051","token_address":"0x1beb7dc47bbe505a26b34476e82eec948d48f125","type":"artist","uuid":"5c357693-149d-4863-90cf-2bdb4bcb3a92"}
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 0x603ca8a3e632953c992f6e8a23b4dada0f251f80ce6057a580cb5538324b15ad. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c357693-149d-4863-90cf-2bdb4bcb3a92.json and https://artists.proofprofile.net/proofs/artist/5c357693-149d-4863-90cf-2bdb4bcb3a92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x603ca8a3e632953c992f6e8a23b4dada0f251f80ce6057a580cb5538324b15ad","name":"Antton Valverde","registered_at":"2026-06-16T21:45:49Z","symbol":"NIM1185051","token_address":"0x1beb7dc47bbe505a26b34476e82eec948d48f125","type":"artist","uuid":"5c357693-149d-4863-90cf-2bdb4bcb3a92"}
album: Euskal kanta-berria
  type: MusicAlbum
  date published: 1970
album: Antton Valverde
  type: MusicAlbum
  date published: 1975
album: Lauaxeta
  type: MusicAlbum
  date published: 1978-10-10
album: Larogeitamazazpi
  type: MusicAlbum
  date published: 1997-11-13
album: Charles Bordes (1863-1909). Hamabi amodio kanta - Douze chansons amoureuses du Pays Basque Français
  type: MusicAlbum
  date published: 2007-11-08
album: Sei silabako gauak
  type: MusicAlbum
  date published: 2020-11-20
album: Gaua ausentziaren itzala
  type: MusicAlbum
  date published: 2020-11-27
track: Zelaian

Zelaian
type: MusicRecording
duration: PT3M29S
duration ms: 209013
explicit: false
by artist: Antton Valverde
in album: Euskal Herriko Lur Maitea
  type: MusicAlbum
  date published: 2010-10-14
isrc code: ES5590800270
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:38:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebb2dd432c9ae85ab02e38ebf42292db739d2e83d70bd8a96e0b6fb2f201dc3e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5590800270
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+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 0xebb2dd432c9ae85ab02e38ebf42292db739d2e83d70bd8a96e0b6fb2f201dc3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5590800270.
  date published: 2026-07-08T08:56:20Z
audio: Zelaian
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.15
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.657
  additional property: Energy
    type: PropertyValue
    value: 0.524
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.878
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.048
  additional property: Liveness
    type: PropertyValue
    value: 0.128
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.398
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.395
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor