3 Libras
type: MusicGroup
genre: brazilian rock
description: "3 Libras" is a song by alternative rock band A Perfect Circle. The song was the second single from their debut album Mer de Noms. The song was well received both critically and commercially, with it
popularity: 3
followers: 739
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x152f195b664f83ee69a55f5cf1c502fa73d56a899d7125faa499c4fb6e9e8455
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f23b1ba-090c-4975-9f4c-f282330d4a4b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4f23b1ba-090c-4975-9f4c-f282330d4a4b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4f23b1ba-090c-4975-9f4c-f282330d4a4b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x152f195b664f83ee69a55f5cf1c502fa73d56a899d7125faa499c4fb6e9e8455","name":"3 Libras","registered_at":"2026-06-16T17:09:01Z","symbol":"NIM1118999","token_address":"0x0546d0ac857ea6c5d4f3cf956e033c8685ccdc3a","type":"artist","uuid":"4f23b1ba-090c-4975-9f4c-f282330d4a4b"}
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 0x152f195b664f83ee69a55f5cf1c502fa73d56a899d7125faa499c4fb6e9e8455. 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/4f23b1ba-090c-4975-9f4c-f282330d4a4b.json and https://artists.proofprofile.net/proofs/artist/4f23b1ba-090c-4975-9f4c-f282330d4a4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x152f195b664f83ee69a55f5cf1c502fa73d56a899d7125faa499c4fb6e9e8455","name":"3 Libras","registered_at":"2026-06-16T17:09:01Z","symbol":"NIM1118999","token_address":"0x0546d0ac857ea6c5d4f3cf956e033c8685ccdc3a","type":"artist","uuid":"4f23b1ba-090c-4975-9f4c-f282330d4a4b"}
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