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Extension block testnet (extnet) #2

chjj opened this Issue Apr 23, 2017 · 1 comment


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chjj commented Apr 23, 2017

I've set up an early testnet for extension blocks (extnet) running on bcoin.

Parameters and genesis block reside in:

This is still an early iteration of the extension block ruleset. Some of the rules implemented only reside in issues/prs as of right now. They will likely be changed in the near future (i.e. extnet2).

Differences from the current spec

Note: Please attempt to break the testnet. That's what it is meant for.


$ git clone git://
$ cd bcoin-extension-blocks
$ git checkout extblk
$ npm install
$ export BCOIN_NETWORK=extnet
$ ./bin/bcoin

Note: ensure you have the required dependencies listed on the bcoin wiki.

Listening Publicly

See the wiki for more info.


The CPU miner is always available via the RPC:

$ ./bin/bcoin rpc generatetoaddress 1 [addr]

Stratum mining is available via bcoin-stratum. Make sure it is installed in a reachable node_modules directory and run bcoin with:

$ mkdir -p ~/.bcoin/extnet/stratum/shares # temporary fix for an issue
$ ./bin/bcoin -n extnet --plugins bcoin-stratum --coinbase-address [address]

Note: if a stratum server respects GBT's default_witness_commitment property without creating a commitment themselves, it should be possible to get extblk mining working with existing mining clients without any changes.

Creating an extblk account

$ ./bin/bcoin wallet account create foo --witness
# Should return JSON containing your extblk receive addr.
# If you need to see it again, run:
# $ ./bin/bcoin wallet account get foo

TX history

$ ./bin/bcoin wallet history
$ ./bin/bcoin wallet history --account=foo

Sending from extblk account

$ ./bin/bcoin wallet send [address] [value] --account=foo

Extra verbose block output

$ ./bin/bcoin rpc getblockbyheight [number] true true

Please join #bcoin and/or #extblk-dev on freenode to voice any issues you may encounter.


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chjj Apr 25, 2017


Someone is currently DoSing the faucet. Should be up again shortly.


chjj commented Apr 25, 2017

Someone is currently DoSing the faucet. Should be up again shortly.

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