Bitcoin Gold (BTG)
Bitcoin Gold (BTG) is a hard fork of Bitcoin (BTC) and shares the same transaction history up to the point of the fork. The Bitcoin Gold hard fork took place on October 24, 2017. The stated purpose of the fork is to restore GPU mining functionality to Bitcoin, as opposed to specialized ASICs.
|Firmware (device) support||Trezor One 1.6.0, Trezor Model T 2.0.5|
|Available in Trezor Wallet?||Yes|
How to use Bitcoin Gold with Trezor
Bitcoin Gold is integrated into Trezor Wallet. It is, therefore, possible to use it in the standard interface.
- Plug in your Trezor device.
- Go to wallet.trezor.io.
- Select Bitcoin Gold in the top-left corner of the screen (see Getting to know Trezor Wallet#Switching cryptocurrencies (1)).
- Work with Trezor Wallet as usual. For more information, see User manual.
Claiming Bitcoin Gold
If you have held bitcoins on addresses generated by your seed before the block #491407, you automatically got BTG in 1:1 ratio to bitcoin balance on the said address (E.g., if you had 0.25 BTC on an address "x" at the time of the fork, there is now 0.25 BTC and 0.25 BTG after the fork.).
See Claiming cryptocurrency after coin split for more information and detailed instructions.
The fork and differences from Bitcoin
The Bitcoin Gold fork happened on October 24, 2017, at block height 491407. One of the primary goals of Bitcoin Gold was to change the algorithm by which the cryptocurrency itself is mined. The change means that the process is not faster on specialized equipment than it is on standard computer systems, making mining more affordable for smaller miners. Bitcoin Gold uses Equihash instead of SHA-256.
In most of the other important aspects, Bitcoin Gold is very similar to Bitcoin.
Controversy and criticism
There have been accusations that the main motivation of the fork was personal financial gain, as the developers did a post-mine after the launch, retroactively mining the first 8,000 blocks or 100,000 BTG coins. However, these assets were allegedly set aside as an endowment to help maintain and grow the Bitcoin Gold network. 5,000 of the pre-mined coins were distributed to the founding team members as a bonus. For more information, see this blog article.
Bitcoin Gold 51% attack
In May 2018, Bitcoin Gold was hit by a 51% attack, resulting in a loss of cryptocurrency assets worth almost 18 million US dollars at the time. An update published by the development team behind Bitcoin Cash confirmed that the attacking party had gained majority control of the hash rate, using it to reorganize the blockchain and reverse transactions.