Cổ Thạch Xuyên
type: MusicGroup
popularity: 3
followers: 246
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0fd91ae14f5e416317a46c59edfce36d4c0ee2016c9a2246cb9ede56d4b98c61
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/477a81d5-1202-4252-8a39-f3a57a8939ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/477a81d5-1202-4252-8a39-f3a57a8939ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/477a81d5-1202-4252-8a39-f3a57a8939ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0fd91ae14f5e416317a46c59edfce36d4c0ee2016c9a2246cb9ede56d4b98c61","name":"Cổ Thạch Xuyên","registered_at":"2026-06-16T14:27:41Z","symbol":"NIM1080504","token_address":"0xe3d5a57012e00d7d3d310bc2baa0c22d2146eb3d","type":"artist","uuid":"477a81d5-1202-4252-8a39-f3a57a8939ee"}
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 0x0fd91ae14f5e416317a46c59edfce36d4c0ee2016c9a2246cb9ede56d4b98c61. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/477a81d5-1202-4252-8a39-f3a57a8939ee.json and https://artists.proofprofile.net/proofs/artist/477a81d5-1202-4252-8a39-f3a57a8939ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x0fd91ae14f5e416317a46c59edfce36d4c0ee2016c9a2246cb9ede56d4b98c61","name":"Cổ Thạch Xuyên","registered_at":"2026-06-16T14:27:41Z","symbol":"NIM1080504","token_address":"0xe3d5a57012e00d7d3d310bc2baa0c22d2146eb3d","type":"artist","uuid":"477a81d5-1202-4252-8a39-f3a57a8939ee"}
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