Blockchain & Cryptocurrency Glossary

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

  • search-icon Clear Definitions
  • search-icon Practical
  • search-icon Technical
  • search-icon Related Terms

Oracle Bridge

1 min read
Pronunciation
[awr-uh-kl brij]
Analogy
Like a customs bridge where goods are inspected and certified before moving between countries, an oracle bridge certifies data before passing between chains.
Definition
A protocol that uses oracle attestations to transfer data or asset proofs across blockchains, enabling cross‑chain interoperability via verified oracle-supplied messages.
Key Points Intro
Oracle bridges relay verified data or asset locks between chains using oracle attestations and relayers.
Key Points

Lock & mint: Locks asset on source chain, oracle attests, mints on target chain.

Attestation relay: Oracle submits proof to destination bridge contract.

Verifiable: Bridge contract checks signature and data integrity.

Timeouts: Defines refund path if attestation not received.

Example
A USDC oracle bridge locks USDC on Ethereum, oracle attests lock event, and the bridge mints bridged USDC on Polygon.
Technical Deep Dive
Bridge contract emits `Locked(address, amount, nonce)`. Oracle watcher listens, signs an attestation, and calls `mint(recipient, amount, nonce, sig)` on target chain. Contract verifies signature and nonce uniqueness.
Security Warning
Oracle or relayer collusion can mint fake assets; use multi‑oracle consensus and slashing.
Caveat
Bridge finality depends on oracle update interval; funds may be locked longer during delays.
Related Terms
Oracle Attestation
Oracle Consensus
Oracle Slashing

Oracle Bridge - Related Articles

No related articles for this term.