Farcaster

What's the easiest way to check when someone joined Farcaster? I know how to find someone's FID but not sure where could I check the date when they created an account

this is actually more complicated than you might imagine, because all join dates were reset when the migration to optimism mainnet happened in september 2023 and then again when contracts were updated on 7 November 2023

Example: https://app.airstack.xyz/query/wJN8EPRanE

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hmm so is there an easy way to check the fid's from the goerli testnet?

i tried to check nft transfers via my connected address on goerli etherscan but this date doesn't seem right - i'm pretty sure i used FC before this time:

https://goerli.etherscan.io/address/0x66cc8f831f2a05fde7573f18ba6abfef8ad59d34#nfttransfers

🥷 at Senpi:  senpi.ai 
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The official account for Airstack, developer of @moxie-protocol. airstack.xyz. On a mission to grow the Farcaster GDP.

Checkout the APIs by @airstack.eth . It's pretty slick!

Here you go - change the leading FID variable:

```
FID=17878; curl -s "https://nemes.farcaster.xyz:2281/v1/userDataByFid?fid=$FID&user_data_type=4" | jq '.messages[0].data.timestamp' | xargs -I {} bash -c 'echo $(({} + 1609459200))' | xargs -I {} date -r {} '+%Y-%m-%d %H:%M:%S'

2023-08-15 18:38:02
```