Big Mac
type: MusicGroup
description: The Big Mac is a brand of hamburger sold by the international fast food restaurant chain McDonald's. It was introduced by a Greater Pittsburgh area franchisee in 1967 and expanded nationwide in 1968,
popularity: 2
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d082b4db2c96b5b8d54304af21e9e1df0cc5a9d6550f6742878c9842b598180
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/4cd0f39b-8c8c-4f9e-af65-6a6ed704742c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4cd0f39b-8c8c-4f9e-af65-6a6ed704742c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4cd0f39b-8c8c-4f9e-af65-6a6ed704742c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d082b4db2c96b5b8d54304af21e9e1df0cc5a9d6550f6742878c9842b598180","name":"Big Mac","registered_at":"2026-06-16T16:40:26Z","symbol":"NIM1112181","token_address":"0xbb87c8a522f2bee5f63fff4d9c7aacc1d2b6e860","type":"artist","uuid":"4cd0f39b-8c8c-4f9e-af65-6a6ed704742c"}
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 0x9d082b4db2c96b5b8d54304af21e9e1df0cc5a9d6550f6742878c9842b598180. 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/4cd0f39b-8c8c-4f9e-af65-6a6ed704742c.json and https://artists.proofprofile.net/proofs/artist/4cd0f39b-8c8c-4f9e-af65-6a6ed704742c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x9d082b4db2c96b5b8d54304af21e9e1df0cc5a9d6550f6742878c9842b598180","name":"Big Mac","registered_at":"2026-06-16T16:40:26Z","symbol":"NIM1112181","token_address":"0xbb87c8a522f2bee5f63fff4d9c7aacc1d2b6e860","type":"artist","uuid":"4cd0f39b-8c8c-4f9e-af65-6a6ed704742c"}
album: New Beginning
  type: MusicAlbum
  date published: 2025-03-26