FOLLOW THE MECHANISM
- 1Lock or burn
The source system removes assets from free circulation.
- 2Verify
A bridge establishes an accepted source event.
- 3Mint or release
- 4Return
A verified reverse path redeems or exchanges the claim.
A conceptual sequence. Real implementations can add steps, intermediaries, and conditions.
Assets do not physically cross chains
A token balance belongs to a particular ledger. In a lock-and-mint bridge, assets are locked on the source chain and a representation is minted on the destination. Returning commonly burns the representation and releases the source asset. Other designs use burn-and-mint or liquidity providers that exchange inventories across chains. These designs move economic exposure through different mechanisms; there is no universal bridge account that simply transports a token unchanged between unrelated ledgers.
The crucial question is what proves the event
The destination must determine whether a source-chain deposit, burn or message really occurred and is sufficiently final. A bridge may verify a light-client proof, rely on a committee, use an optimistic challenge system or depend on other validation machinery. Each has different trust, delay and availability assumptions. A fast confirmation can mean accepting extra risk rather than making source-chain finality faster. Administrative upgrades and emergency controls can also alter which assertions the destination accepts.
Backing and market price can diverge
Suppose 100 original tokens are locked and 100 wrapped claims circulate. That is a one-to-one unit relationship before fees, not a guarantee of a one-to-one trading price. Redemption delay, verification failure or concern about the custodian can produce a discount. If backing is stolen but wrapped claims remain, their token count has not automatically adjusted to the shortfall. Conversely, a forged mint can increase claims without increasing assets. The backing demonstration separates those two sides explicitly.
The dependency survives later uses
A wrapped asset deposited into a lending pool remains dependent on its bridge. If the bridge fails, a local pool contract can operate correctly while holding impaired collateral. An exit can also require both chains, relayers, liquidity and the correct token route to function. Network names and token symbols are insufficient identifiers; the contract address and provenance determine the claim. Understanding a bridge means following issuance, redemption, message verification and recovery authority, rather than treating interoperability as a single checkbox.
MAKE IT CONCRETE
Illustrative shortfall
If 100 wrapped claims remain after 30 backing tokens are lost, the backing ratio is 70%. A quoted market price of one token per claim cannot restore the missing 30.
FAILURE PATHS & COMMON MISREADINGS
Where the model can break
- Wrapped token units do not prove backing exists or can be redeemed.
- A secure destination chain does not fix a compromised bridge.
KEEP EXPLORING