Big the Cat
type: MusicGroup
popularity: 3
followers: 140
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebd9b8ff6ba72c1b87d2cd9089ed01b1d5d3aedce5bc9d246108a4a87de67be8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954131
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954131
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:19:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xebd9b8ff6ba72c1b87d2cd9089ed01b1d5d3aedce5bc9d246108a4a87de67be8","name":"Big the Cat","registered_at":"2026-06-17T09:23:46Z","symbol":"NIM1351541","token_address":"0xe52913695a59b0280314e9d5550894d4a45988d9","type":"artist","uuid":"7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0"}
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 0xebd9b8ff6ba72c1b87d2cd9089ed01b1d5d3aedce5bc9d246108a4a87de67be8. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0.json and https://artists.proofprofile.net/proofs/artist/7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:19:19Z
  text: {"copyright_id":"0xebd9b8ff6ba72c1b87d2cd9089ed01b1d5d3aedce5bc9d246108a4a87de67be8","name":"Big the Cat","registered_at":"2026-06-17T09:23:46Z","symbol":"NIM1351541","token_address":"0xe52913695a59b0280314e9d5550894d4a45988d9","type":"artist","uuid":"7da53bb0-16d5-4d5e-a745-aaf72bd3d6a0"}
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  type: MusicAlbum
  date published: 2022-10-21
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  date published: 2022-11-25
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2023-03-21
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  date published: 2023-06-13
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  date published: 2023-08-15
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  type: MusicAlbum
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  type: MusicAlbum
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