Four Holidays
type: MusicGroup
popularity: 8
followers: 46
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc8b8e03b491b228e2a9367264e0f36a28107d65a8666ffb5a1b8f2ea623add2d
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/b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc8b8e03b491b228e2a9367264e0f36a28107d65a8666ffb5a1b8f2ea623add2d","name":"Four Holidays","registered_at":"2026-06-20T15:54:22Z","symbol":"NIM1646216","token_address":"0x94c2ef035f1a28d1b945894798a13d53da6b05a9","type":"artist","uuid":"b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb"}
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 0xc8b8e03b491b228e2a9367264e0f36a28107d65a8666ffb5a1b8f2ea623add2d. 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/b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb.json and https://artists.proofprofile.net/proofs/artist/b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xc8b8e03b491b228e2a9367264e0f36a28107d65a8666ffb5a1b8f2ea623add2d","name":"Four Holidays","registered_at":"2026-06-20T15:54:22Z","symbol":"NIM1646216","token_address":"0x94c2ef035f1a28d1b945894798a13d53da6b05a9","type":"artist","uuid":"b7ec7a0d-e8b2-49d2-a93b-250d82da1dfb"}