Marco Calderon
type: MusicGroup
popularity: 2
followers: 213
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1a283b940a7c3b31a63b03114157f3bde9977c0cc0cce8a0471b7692a7a2081
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec53a023-b6d9-4e37-9267-f07e09907703.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec53a023-b6d9-4e37-9267-f07e09907703.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ec53a023-b6d9-4e37-9267-f07e09907703
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc1a283b940a7c3b31a63b03114157f3bde9977c0cc0cce8a0471b7692a7a2081","name":"Marco Calderon","registered_at":"2026-06-21T11:15:35Z","symbol":"NIM1908415","token_address":"0x028079dba882fa73d3d8430488fd754ffcc0769c","type":"artist","uuid":"ec53a023-b6d9-4e37-9267-f07e09907703"}
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 0xc1a283b940a7c3b31a63b03114157f3bde9977c0cc0cce8a0471b7692a7a2081. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec53a023-b6d9-4e37-9267-f07e09907703.json and https://artists.proofprofile.net/proofs/artist/ec53a023-b6d9-4e37-9267-f07e09907703.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xc1a283b940a7c3b31a63b03114157f3bde9977c0cc0cce8a0471b7692a7a2081","name":"Marco Calderon","registered_at":"2026-06-21T11:15:35Z","symbol":"NIM1908415","token_address":"0x028079dba882fa73d3d8430488fd754ffcc0769c","type":"artist","uuid":"ec53a023-b6d9-4e37-9267-f07e09907703"}
album: Utilízame
  type: MusicAlbum
  date published: 2018-09-07
album: Utilízame
  type: MusicAlbum
  date published: 2018-09-07
album: Utilízame / Jeans (Tami Remix)
  type: MusicAlbum
  date published: 2020-11-13