chore(snapshots): export block 18010657

snapshots/README.md

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+# Snapshots
+
+## Block [18010657](https://www.mintscan.io/cosmos/block/18010657)
+
+This block is selected to be pre-tally for [cosmoshub-4 proposal 848](https://www.mintscan.io/cosmos/proposals/848)
+
+Block [18010657](https://www.mintscan.io/cosmos/block/18010657) is the last block where vote are present in the state.
+In order to get all votes, we need to add the votes present in block [18010658](https://www.mintscan.io/cosmos/block/18010658) where the tally happens.
+This is because after the tally is completed, the votes a removed from state.
+
+### Download
+
+An export is stored in S3 accessible here: https://atomone.fra1.digitaloceanspaces.com/cosmoshub4/cosmoshub-4-export-18010657.json
+
+### How the block has been exported
+
+On a stopped blockchain node containing the block 18010657
+
+```sh
+$ gaiad export --height 18010657 > cosmoshub-4-export-18010657.json 2>&1
+```
+
+### Verify the export
+
+```sh
+$ md5sum cosmoshub-4-export-18010657.json
+84cdf83c11c7a88e0cf60070391a2519  cosmoshub-4-export-18010657.json
+```
+
+### Get the list of voters
+
+#### Get All voters
+
+```sh
+$ jq '.app_state.gov.votes[] | select(.proposal_id == "848")'  cosmoshub-4-export-18010657.json 
+[...]
+```
+
+## TODO
+
+- [ ] independently verify the snapshot data with another full node. each validator that wants to participate can start by attesting to the generated export.
+- [ ] is there a schema for the exported json? how is it used?