Rolling up our sleeves

Grin is still an infant, much is left to be done and contributions are welcome. Here's a (non exhaustive) list of what's left to implement:

Transaction signatures aggregation.
Proper API to author transactions.
Protocol layer (handshake, send blocks, ask for blocks, send txs, ask for them, sync, etc.).
Maintenance of the UTXO set and its Merkle tree.
Transaction pool and related validation.
Chain logic and related validation.
Efficient miner (as a distinct project).
User-friendly wallet (as a distinct project).
Figure out if the rangeproofs can be eliminated under some cicrumstances while keeping security guarantes.
Website, logo design and all the cool stuff.

Don't worry, we'll get there, with your help.