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new btcblock alias

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thanks to @0xLeos
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Shannon Appelcline 2020-08-04 11:45:50 -10:00 committed by GitHub
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03_1_Verifying_Your_Bitcoin_Setup.md
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@ -45,7 +45,17 @@ That tells you what's loaded; you'll then need to check that against an online s
You can do this by looking at a blocknet explorer, such as [the Blockcypher Testnet explorer](https://live.blockcypher.com/btc-testnet/). Does its most recent number match your `getblockcount`? If so, you're up to date.
> :link: **TESTNET vs MAINNET:** Remember that this tutorial generally assumes that you are using testnet. If you're using the mainnet instead, you can retrieve the current block height with: `wget -O - http://blockchain.info/q/getblockcount 2>/dev/null`. Unfortunately, functionality like this for testnet has disappeared over the years.
If you'd like an alias to look at everything at once, the following currently works for Testnet, but may disappear at some time in the future:
```
$ cat >> ~/.bash_profile << EOF
> alias btcblock="echo \\\`bitcoin-cli getblockcount 2>&1\\\`/\\\`wget -O - https://blockstream.info/testnet/api/blocks/tip/height 2> /dev/null | cut -d : -f2 | rev | cut -c 1- | rev\\\`"
EOF
$ source .bash_profile
$ btcblock
1804372/1804372
```
> :link: **TESTNET vs MAINNET:** Remember that this tutorial generally assumes that you are using testnet. If you're using the mainnet instead, you can retrieve the current block height with: `wget -O - http://blockchain.info/q/getblockcount 2>/dev/null`. You can replace the latter half of the `btblock` alias (after `/`) with that.
If you're not up-to-date, but your `getblockcount` is increasing, no problem. Total download time can take from an hour to several hours, depending on your setup.