Eva Salina
type: MusicGroup
popularity: 2
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81f0581192b1b4f63e2406d435f08790911690ed0ebef19cd9fd34c450cbd31a
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/cd118e3c-9aee-4e69-b60a-734764cd99a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd118e3c-9aee-4e69-b60a-734764cd99a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cd118e3c-9aee-4e69-b60a-734764cd99a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x81f0581192b1b4f63e2406d435f08790911690ed0ebef19cd9fd34c450cbd31a","name":"Eva Salina","registered_at":"2026-06-20T23:41:07Z","symbol":"NIM1752169","token_address":"0x9040befd67854a60f62103f5e84fce24ab1115d4","type":"artist","uuid":"cd118e3c-9aee-4e69-b60a-734764cd99a8"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0581192b1b4f63e2406d435f08790911690ed0ebef19cd9fd34c450cbd31a. 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/cd118e3c-9aee-4e69-b60a-734764cd99a8.json and https://artists.proofprofile.net/proofs/artist/cd118e3c-9aee-4e69-b60a-734764cd99a8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x81f0581192b1b4f63e2406d435f08790911690ed0ebef19cd9fd34c450cbd31a","name":"Eva Salina","registered_at":"2026-06-20T23:41:07Z","symbol":"NIM1752169","token_address":"0x9040befd67854a60f62103f5e84fce24ab1115d4","type":"artist","uuid":"cd118e3c-9aee-4e69-b60a-734764cd99a8"}