České srdce
type: MusicGroup
genre: big beat
genre: celtic
popularity: 4
followers: 499
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5eb3cacc8372254a1d2514bd123aefa998ba37a0fee9d956273340a42fc8d90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ceab96-5d36-4733-ba68-4b6e5f11558f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7ceab96-5d36-4733-ba68-4b6e5f11558f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7ceab96-5d36-4733-ba68-4b6e5f11558f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe5eb3cacc8372254a1d2514bd123aefa998ba37a0fee9d956273340a42fc8d90","name":"České srdce","registered_at":"2026-06-21T09:20:54Z","symbol":"NIM1886947","token_address":"0xb6b372a36bc17469b0465c5789eec27dcfbfe289","type":"artist","uuid":"e7ceab96-5d36-4733-ba68-4b6e5f11558f"}
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 0xe5eb3cacc8372254a1d2514bd123aefa998ba37a0fee9d956273340a42fc8d90. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7ceab96-5d36-4733-ba68-4b6e5f11558f.json and https://artists.proofprofile.net/proofs/artist/e7ceab96-5d36-4733-ba68-4b6e5f11558f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xe5eb3cacc8372254a1d2514bd123aefa998ba37a0fee9d956273340a42fc8d90","name":"České srdce","registered_at":"2026-06-21T09:20:54Z","symbol":"NIM1886947","token_address":"0xb6b372a36bc17469b0465c5789eec27dcfbfe289","type":"artist","uuid":"e7ceab96-5d36-4733-ba68-4b6e5f11558f"}
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  date published: 2013-06-21
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  type: MusicAlbum
  date published: 2015-06-02
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  date published: 2017-04-09