Fer & Ju
type: MusicGroup
popularity: 20
followers: 2858
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfe63d73765002df3d7d674a0c314f599b3c691963285f197d1f7453a57988d64
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953598
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953598
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:40:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfe63d73765002df3d7d674a0c314f599b3c691963285f197d1f7453a57988d64","name":"Fer & Ju","registered_at":"2026-06-14T05:43:43Z","symbol":"NIM0356512","token_address":"0x5827728740d7505f916067d1faf111219b68867a","type":"artist","uuid":"0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb"}
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 0xfe63d73765002df3d7d674a0c314f599b3c691963285f197d1f7453a57988d64. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb.json and https://artists.proofprofile.net/proofs/artist/0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T06:40:11Z
  text: {"copyright_id":"0xfe63d73765002df3d7d674a0c314f599b3c691963285f197d1f7453a57988d64","name":"Fer & Ju","registered_at":"2026-06-14T05:43:43Z","symbol":"NIM0356512","token_address":"0x5827728740d7505f916067d1faf111219b68867a","type":"artist","uuid":"0c98b1a1-3f52-43f6-95e5-4ca5b7c62ddb"}
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