Use NFT ownership as a real server-side permission.

STANDARDS

Choose the NFT rule that matches the entitlement

Use ERC-721 when access depends on owning tokens from a collection. Use ERC-1155 when a specific token ID or balance represents the pass, tier or entitlement.

Both rule types return the same application-level verdict.

SERVER

Do not send premium data before authorization

A locked card or hidden text in the browser can be inspected or bypassed if the backend already returned the protected payload.

Verify the authenticated wallet before your API route returns the premium content or performs the privileged action.

DECISION

Separate non-ownership from verification failure

When the wallet conclusively fails the NFT policy the result is denied. When chain state cannot be established reliably, the result is error.

That distinction is important for products that should fail closed during provider or contract-read problems.

STATE

Remember that NFT ownership can change

An authorization result reflects the state observed during verification. If a sensitive action requires current NFT ownership, verify again at the execution boundary rather than treating an earlier allow as permanent.

FIRST TEST

Move one premium boundary to AccessVerdict

Choose one existing NFT-gated route, define the corresponding ERC-721 or ERC-1155 policy, and compare the custom ownership/RPC code before and after the integration.