A 10,000,000-of-10,000,000 MuSig

This is a Taproot output for a 10,000,000-of-10,000,000 MuSig multisig:

01F137781B753B22F8CA5450A64104072DAC55A0CCE2B67B3797ED8131E1194D23

Creating it took 70 seconds on a single core with this basic tool. Perhaps there is an application for very large n-of-n.

Producing a signature is a different matter. With a simple tool like this, the quadratic communication cost of MuSig1 quickly makes signing infeasible for large n: 5,000-of-5,000 already takes 140 seconds.

Update: With the new MuSig2 module in secp256k1-zkp, signing scales linearly, and creating a 1,000,000-of-1,000,000 signature takes about 2 minutes on a single machine.