Grin and Beam use Mimblewimble, but Monero uses ring signatures to obscure the transaction graph (with every real input hiding among 16 decoys), and Zcash uses

Grin and Beam use Mimblewimble, but Monero uses ring signatures to obscure the transaction graph (with every real input hiding among 16 decoys), and Zcash uses ZK-SNARK zero knowledge proofs [1]. This makes the latter two chains grow at a much faster rate [2] and leaves nodes unable to identify the UTXO set of unspent outputs, making them more resource intensive. [1] https://electriccoin.co/blog/explaining-halo-2/ https://electriccoin.co/blog/explaining-halo-2/ [2] https://forum.grin.mw/t/scalability-vs-privacy-chart/8114 https://forum.grin.mw/t/scalability-vs-privacy-chart/8114