On Mon, Aug 29, 2022 at 9:12 AM Ali Sherief via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> wrote:
I am aware that business processes are mostly CSV file oriented

I disagree that business processes are mostly CSV.  Amateur processes maybe, but professional accounting, no. Trying to do my business accounting with CSV files from various exchanges is PITA.
 
so you can make a statement akin to BIP174 in the Goal 2 BIP, that expects the medium of exchange to be in files ending in .csv. I wouldn't mind if you require .csv file extension in a BIP for Goal 2. But such a statement is not appropriate in the Goal 1 BIP which is only concerned with the wallet label format itself.

I too would like to see some separation of layers here, as there are other possible output formats. Maybe expanding on another use case for this data would help.

I've been working with @nochiel on export to a Plain-Text Accounting friendly format, initially the beancount python app: (our prototype is current at /beancounter.py but it is being refactored into new repo).

Basically what the final tool will do is: given a descriptor, get any transactions for that descriptor from a random explora via Tor (initially ours and Blockstream's), and then get price information from a random Spotbit price server via Tor (initially just ours, but seeking more hosts), and export a beancount compatible file.

```

python app.py beancount "wpkh(tpubD9hudZxy8Uj3453QrsEbr8KiyXTYC5ExHjJ5sNDVW7yKJ8wc7acKQcpdbvZX6dFerHK6MfVvs78VvGfotjN28yC4ij6nr4uSVhX2qorUV8V/0/*)"
Outputs: spotbit.beancount

2008-10-31 commodity BTC
  name: "Bitcoin"
  asset-class: "cryptocurrency"

2018-04-02 open Assets:BTC BTC
2018-04-02 open Liabilities:Cash:USDT USDT

2018-04-02 * "tb1qcrekknrspx28t9vl53ltsag5gqgqdj066ydf75" "Transaction hash: 2a2f7f24761fa54cb6e559efea5678415d9cbbabc42e6a4e2ce463ee3c446230"
Assets:BTC 1.00000000 BTC { 6935.16 USDT }
Liabilities:Cash:USDT - 6935.16 USDT

2018-04-02 * "tb1q45whzx3emntntnpzjdx3gzj6z5cgxakkg7s3sa" "Transaction hash: 387123efcaa707759a4af8159cb1309fae86b793d26b5fd8bba42637852dde89"
Assets:BTC - 0.36300616 BTC @  6935.16 USDT
Liabilities:Cash:USDT 2517.51 USDT

2018-04-02 * "tb1qgv5484m83e2mzz3n8tf4snvnwj5qgqgampnhvv" "Transaction hash: 387123efcaa707759a4af8159cb1309fae86b793d26b5fd8bba42637852dde89"
Assets:BTC - 0.63699243 BTC @  6935.16 USDT
Liabilities:Cash:USDT 4417.64 USDT

2018-04-02 * "tb1q45whzx3emntntnpzjdx3gzj6z5cgxakkg7s3sa" "Transaction hash: 387123efcaa707759a4af8159cb1309fae86b793d26b5fd8bba42637852dde89"
Assets:BTC 0.36300616 BTC { 6935.16 USDT }
Liabilities:Cash:USDT - 2517.51 USDT 

```

I can then use the beancount cli app (or it's fava webapp) to easily add other details to this file to do my bitcoin accounting (and any other accounting I need). In particular, as beancount support lots, it solves a problem for me with US taxes which is unrealized capital gain (I get 1 BTC from donor at $20K, the price goes up to $30K and I pay it to an engineer, my BTC balance is 0 but my unrealized capital gain for US tax purposes  is $10K).

More ideally, if there were additional details that I could merge in from my wallet export, such as payer and payee, notes, etc. it would make my accounting much easier. 

Thus I'd like to see an easier and interoperable way to merge these details (my account details from an Esplora and price details from Spotbit), with what my different wallets may (or may not) have available.

I hope that this might inspire some ideas from the people working on this wallet export format.

-- Christopher Allen