.@21co__ has integrated Chainlink Proof of Reserve (PoR) on @ethereum & @solana to enhance reserves transparency for 21BTC, its wrapped Bitcoin.

How PoR provides the Ethereum & Solana ecosystems with assurances that 21BTC is fully backed 1:1 by BTC👇

https://www.21.co/blog-articles/21-co-integrates-chainlink-por-wrapped-bitcoin-21btc