EL CID
type: MusicGroup
description: Rodrigo Díaz de Vivar ( – 10 July 1099) was a Castilian knight and ruler in medieval Spain. Fighting with both Christian and Muslim armies during his lifetime, he earned the Arabic honorific ("the Lo
popularity: 2
followers: 124
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc6ce887c334597aca438edea5ebdf71b9f8b64b48288482dd75d9431c04610c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954174
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954174
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e4a5c47-33c8-4aac-8833-8881048a4610.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e4a5c47-33c8-4aac-8833-8881048a4610.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e4a5c47-33c8-4aac-8833-8881048a4610
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-18T03:01:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc6ce887c334597aca438edea5ebdf71b9f8b64b48288482dd75d9431c04610c6","name":"EL CID","registered_at":"2026-06-17T09:39:55Z","symbol":"NIM1355399","token_address":"0x66218bbc6e6e4b913fe273ac4629732283a05f46","type":"artist","uuid":"7e4a5c47-33c8-4aac-8833-8881048a4610"}
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 0xc6ce887c334597aca438edea5ebdf71b9f8b64b48288482dd75d9431c04610c6. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e4a5c47-33c8-4aac-8833-8881048a4610.json and https://artists.proofprofile.net/proofs/artist/7e4a5c47-33c8-4aac-8833-8881048a4610.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0xc6ce887c334597aca438edea5ebdf71b9f8b64b48288482dd75d9431c04610c6","name":"EL CID","registered_at":"2026-06-17T09:39:55Z","symbol":"NIM1355399","token_address":"0x66218bbc6e6e4b913fe273ac4629732283a05f46","type":"artist","uuid":"7e4a5c47-33c8-4aac-8833-8881048a4610"}
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