TrustDrop Protocol

Enforceable delivery

TrustDrop is a protocol for turning delivery into verifiable evidence that contracts can act on. It combines on-chain escrow, zero-knowledge proof verification, data availability checks, and buyer-recoverable key release into one enforceable delivery flow.

Current prototype: contracts run on Arbitrum Sepolia, encrypted assets are stored on Walrus Mainnet, and proofs are generated with SP1 Prove Network.

Protocol Guarantees

Locked payment intent

Buyer payment is locked in a channel while the seller completes a protocol-visible delivery path.

Proof-backed delivery

Seller fulfillment is tied to VSS and VDD verifier contracts rather than an off-chain promise.

Recoverable key release

The buyer receives key material that is checked against commitments before the seller can settle.

Applications

Fair File Marketplace is the first buyer-facing application built on TrustDrop. It demonstrates a file-sale workflow, but the protocol itself is the lower-level provable delivery and settlement layer.