Kayhan Kalhor & Madjid Khaladj
type: MusicGroup
popularity: 2
followers: 551
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8fbd0f0508a8cc29126c8247363969235d43994678d2569af04f3fac258e8e43
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bcadc715-645f-4cdc-8a98-767ceafd0f76.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bcadc715-645f-4cdc-8a98-767ceafd0f76.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bcadc715-645f-4cdc-8a98-767ceafd0f76
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8fbd0f0508a8cc29126c8247363969235d43994678d2569af04f3fac258e8e43","name":"Kayhan Kalhor & Madjid Khaladj","registered_at":"2026-06-20T17:36:34Z","symbol":"NIM1667932","token_address":"0x17ca9e2e8dcb12fd54c70aef31dcec47b5e5c0b3","type":"artist","uuid":"bcadc715-645f-4cdc-8a98-767ceafd0f76"}
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 0x8fbd0f0508a8cc29126c8247363969235d43994678d2569af04f3fac258e8e43. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcadc715-645f-4cdc-8a98-767ceafd0f76.json and https://artists.proofprofile.net/proofs/artist/bcadc715-645f-4cdc-8a98-767ceafd0f76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x8fbd0f0508a8cc29126c8247363969235d43994678d2569af04f3fac258e8e43","name":"Kayhan Kalhor & Madjid Khaladj","registered_at":"2026-06-20T17:36:34Z","symbol":"NIM1667932","token_address":"0x17ca9e2e8dcb12fd54c70aef31dcec47b5e5c0b3","type":"artist","uuid":"bcadc715-645f-4cdc-8a98-767ceafd0f76"}
album: Voices of the Shades (Saamaan-e saayeh'haa)
  type: MusicAlbum
  date published: 2011-01-01