Jocy de Oliveira
type: MusicGroup
genre: avant-garde
genre: experimental
genre: minimalism
description: Jocy de Oliveira (formerly de Carvalho; born 11 April 1936) is a Brazilian pianist, multimedia artist and composer. Biography Jocy de Oliveira was born in Curitiba and grew up in São Paulo, Brazil. S
popularity: 2
followers: 1419
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa19ea12749dcffbcb902e8ff3eba69dfee7f8836e5bb130249e5ea7105187de7
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/5f59e2b9-db7d-4605-b5ab-a757d1e7fc94.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f59e2b9-db7d-4605-b5ab-a757d1e7fc94.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5f59e2b9-db7d-4605-b5ab-a757d1e7fc94
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa19ea12749dcffbcb902e8ff3eba69dfee7f8836e5bb130249e5ea7105187de7","name":"Jocy de Oliveira","registered_at":"2026-06-16T22:54:45Z","symbol":"NIM1201496","token_address":"0xf244d14e892400d2ffd3df8ca5fd8f10308b466c","type":"artist","uuid":"5f59e2b9-db7d-4605-b5ab-a757d1e7fc94"}
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 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19ea12749dcffbcb902e8ff3eba69dfee7f8836e5bb130249e5ea7105187de7. 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/5f59e2b9-db7d-4605-b5ab-a757d1e7fc94.json and https://artists.proofprofile.net/proofs/artist/5f59e2b9-db7d-4605-b5ab-a757d1e7fc94.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa19ea12749dcffbcb902e8ff3eba69dfee7f8836e5bb130249e5ea7105187de7","name":"Jocy de Oliveira","registered_at":"2026-06-16T22:54:45Z","symbol":"NIM1201496","token_address":"0xf244d14e892400d2ffd3df8ca5fd8f10308b466c","type":"artist","uuid":"5f59e2b9-db7d-4605-b5ab-a757d1e7fc94"}
album: Illud Tempus
  type: MusicAlbum
  date published: 2009-03-05
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  type: MusicAlbum
  date published: 2009-06-15
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  type: MusicAlbum
  date published: 2009-06-15
album: As Malibrans
  type: MusicAlbum
  date published: 2009-10-23