HashTrust

SafeTX is an easy payment solution that leverages Bitcoin multisig transactions to protect buyers, and help grow seller reputation and sales. In a transaction, the buyer pays to a special address (2-of-3 multisig) that releases payment only when both parties sign off and unlocks the payment, or when a mutually-agreed date has expired. For buyers, this allows for inspection of purchase before payment is irreversibly forwarded to the seller. For sellers, this simplifies returns/refunds, and enables reviews from buyers, building reputation and trust for future sales.

Screenshots from Chrome Web Store