Kareem Cento Gradi
type: MusicGroup
genre: guaracha
popularity: 12
followers: 268
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x815315dd619f21942b4a207034ce153a01a438cee88387129fcf07ca9135199c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953602
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953602
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ed1c382-1b63-4b98-af1c-510f9ecc8f7c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ed1c382-1b63-4b98-af1c-510f9ecc8f7c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ed1c382-1b63-4b98-af1c-510f9ecc8f7c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:58:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x815315dd619f21942b4a207034ce153a01a438cee88387129fcf07ca9135199c","name":"Kareem Cento Gradi","registered_at":"2026-06-14T06:01:49Z","symbol":"NIM0360827","token_address":"0xad17fd0a33c515a3560b974b38207c200e5827cc","type":"artist","uuid":"0ed1c382-1b63-4b98-af1c-510f9ecc8f7c"}
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 0x815315dd619f21942b4a207034ce153a01a438cee88387129fcf07ca9135199c. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ed1c382-1b63-4b98-af1c-510f9ecc8f7c.json and https://artists.proofprofile.net/proofs/artist/0ed1c382-1b63-4b98-af1c-510f9ecc8f7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:58:10Z
  text: {"copyright_id":"0x815315dd619f21942b4a207034ce153a01a438cee88387129fcf07ca9135199c","name":"Kareem Cento Gradi","registered_at":"2026-06-14T06:01:49Z","symbol":"NIM0360827","token_address":"0xad17fd0a33c515a3560b974b38207c200e5827cc","type":"artist","uuid":"0ed1c382-1b63-4b98-af1c-510f9ecc8f7c"}
album: 90s
  type: MusicAlbum
  date published: 2023-06-16
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  type: MusicAlbum
  date published: 2023-09-01
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  type: MusicAlbum
  date published: 2023-11-10
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  type: MusicAlbum
  date published: 2024-03-22
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  type: MusicAlbum
  date published: 2024-07-05
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  type: MusicAlbum
  date published: 2024-10-11
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  type: MusicAlbum
  date published: 2025-01-03
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  type: MusicAlbum
  date published: 2025-06-30