Alexandre Calma
type: MusicGroup
popularity: 8
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x887bc5a5f1c552a66b6da2067c333cbf92acac528ec2f81606cd8a87281ccf7b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c2e806e-49a9-47e7-882b-295100e16435.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0c2e806e-49a9-47e7-882b-295100e16435.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0c2e806e-49a9-47e7-882b-295100e16435
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x887bc5a5f1c552a66b6da2067c333cbf92acac528ec2f81606cd8a87281ccf7b","name":"Alexandre Calma","registered_at":"2026-06-15T17:49:51Z","symbol":"NIM0785071","token_address":"0x30c02794bf5fe2c7f6934f77e656d53fa99c9b74","type":"artist","uuid":"0c2e806e-49a9-47e7-882b-295100e16435"}
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 0x887bc5a5f1c552a66b6da2067c333cbf92acac528ec2f81606cd8a87281ccf7b. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c2e806e-49a9-47e7-882b-295100e16435.json and https://artists.proofprofile.net/proofs/artist/0c2e806e-49a9-47e7-882b-295100e16435.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:37:45Z
  text: {"copyright_id":"0x887bc5a5f1c552a66b6da2067c333cbf92acac528ec2f81606cd8a87281ccf7b","name":"Alexandre Calma","registered_at":"2026-06-15T17:49:51Z","symbol":"NIM0785071","token_address":"0x30c02794bf5fe2c7f6934f77e656d53fa99c9b74","type":"artist","uuid":"0c2e806e-49a9-47e7-882b-295100e16435"}
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