Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Green NFTs: A Study on the Environmental Impact of Cryptoart
  Technologies   We introduce a model of greenhouse gas emissions due to on-chain activity on
Ethereum, focusing on cryptoart. We also estimate the impact of individual
transactions on the environment, both before and after the London hard fork. We
find that with the current fee mechanism, spending one dollar on transaction
fees corresponds to emitting at least the equivalent of 1.151 kilograms of CO2.
We also describe several techniques to reduce cryptoart emissions, both in the
short and long term.

35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys