Subject: File No. SR-NYSEArca-2021-90
From: Joseph Barr
Affiliation: Dr.

March 2, 2022

Dear SEC,

I'm writing in to support the proposal by Grayscale to convert GBTC to a spot Bitcoin ETF, because:

- the SEC has already approved a futures based BTC ETF and having a spot BTC ETF
seems to be a natural (legal) move

- it's ridiculous to deny the claim based on the grounds that there is risk of market manipulation etc since you've already approved a futures based ETF

- having a spot BTC ETF would actually reduce any market manipulation as Grayscale would likely increase it's BTC holding dramatically and control a large amount of BTC in this custody

- Grayscale is an American company and America should be at the forefront of the technology space

- I need a way to purchase Bitcoin on a US publicly traded exchange in order to invest through many of my accounts

Mr. Gary Gensler, it's time for us to approve a Bitcoin ETF. Please make the right decision.