Chico César
type: MusicGroup
description: thumb|right|250px|Chico César Chico César (born January 26, 1964, in Catolé do Rocha, Paraíba, Brazil) is a Brazilian singer, poet, composer and songwriter. Early years and career Born in Catolé do R
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdca124f811e9f7c18340d46206ba7993ceab4f6c9ed2a194ad8f0fd9a6f8ecc0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04c462c1-9db7-45a8-962c-ea55d397991d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04c462c1-9db7-45a8-962c-ea55d397991d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04c462c1-9db7-45a8-962c-ea55d397991d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdca124f811e9f7c18340d46206ba7993ceab4f6c9ed2a194ad8f0fd9a6f8ecc0","name":"Chico César","registered_at":"2026-06-15T15:06:33Z","symbol":"NIM0746088","token_address":"0x80fc04b798969f1957d668f3a9ebb7bc17c569fe","type":"artist","uuid":"04c462c1-9db7-45a8-962c-ea55d397991d"}
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 0xdca124f811e9f7c18340d46206ba7993ceab4f6c9ed2a194ad8f0fd9a6f8ecc0. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04c462c1-9db7-45a8-962c-ea55d397991d.json and https://artists.proofprofile.net/proofs/artist/04c462c1-9db7-45a8-962c-ea55d397991d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xdca124f811e9f7c18340d46206ba7993ceab4f6c9ed2a194ad8f0fd9a6f8ecc0","name":"Chico César","registered_at":"2026-06-15T15:06:33Z","symbol":"NIM0746088","token_address":"0x80fc04b798969f1957d668f3a9ebb7bc17c569fe","type":"artist","uuid":"04c462c1-9db7-45a8-962c-ea55d397991d"}