Grin Pruned Node Backup — MAINNET
Created      : 2026-02-27 02:44:39 UTC
Network      : MAINNET
Node type    : PRUNED
P2P Port : 3414
Next chain_data refresh: Undefined as the server owner will decide the schedule of cron job.
However, default config will refresh the chain_data At 00:00 on Monday and Thursday.

Download Grin binary: https://github.com/mimblewimble/grin/releases

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LINUX
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1. Download  grin_pruned_mainnet_20260227.tar.gz  and  grin_pruned_mainnet_20260227.sha256
2. Verify    sha256sum -c grin_pruned_mainnet_20260227.sha256
3. Extract   tar -xzf grin_pruned_mainnet_20260227.tar.gz
4. Stop your Grin node
5. Remove old chain_data, move extracted folder in its place
6. Set in grin-server.toml:
   archive_mode = false
   chain_type = "Mainnet"
7. Start Grin node

Faster setup  : https://github.com/noobvie/grin-node-toolkit
                Use Script 01 to set up a new Grin node and import
                pre-synced chain data automatically — no manual sync needed.

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WINDOWS (PowerShell — tar is built-in)
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1. Download all files to a folder
2. Verify    Get-FileHash -Algorithm SHA256 grin_pruned_mainnet_20260227.tar.gz
             Compare with value in grin_pruned_mainnet_20260227.sha256
3. Extract   tar -xzf grin_pruned_mainnet_20260227.tar.gz
4. Stop Grin, replace chain_data folder
5. Edit grin-server.toml (in %USERPROFILE%\.grin\main\):
   archive_mode = false
   chain_type = "Mainnet"
6. Start Grin node

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GRIM WALLET  (https://gri.mw)
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1. Download and verify (see Linux or Windows section above)
2. Stop Grim wallet
3. Replace chain_data in:
   Windows : %USERPROFILE%\.grim\main   Linux   : ~/.grim/main/
   macOS   : ~/Library/Application Support/grim/main/
4. Edit grin-server.toml in that folder:
   archive_mode = false
   chain_type = "Mainnet"
5. Start Grim — first run may take a few minutes to verify the chain

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Notes:
  archive_mode = true  → full node (all history, ~50 GB+)
  archive_mode = false → pruned node (recent data, ~20 GB+)
  chain_type = "Mainnet" uses port 3414
  chain_type = "Testnet" uses port 13414
  chain_data location set by db_root in grin-server.toml

Support: https://forum.grin.mw/