usedthat
UsedThat is a proposed online marketplace and data platform designed to facilitate the buying and selling of used goods while emphasizing provenance, transparency, and sustainability. It combines typical peer-to-peer marketplace functionality with a provenance ledger and verification framework intended to increase trust in second-hand transactions.
The platform would allow users to list items with detailed provenance information, including origin, maintenance history,
Technologically, UsedThat is described as using a tamper-evident log to record provenance events, such as item
History and status: The concept emerged in mid-2020s discussions about reducing electronic and textile waste. A
See also: second-hand marketplaces, product provenance, reuse and recycling.