Unprecedented Drama: Siacoin May Soft-Fork to Block Bitmain’s ASICs

January 25, 2018 by William Peaster 18 Comments 7617 Views

The Siacoin developers have floated the idea of soft-forking Sia to mitigate the profitability of Bitmain’s new A3 Sia mining hardware. The apparent goal? To protect the profitability of the Obelisk SC1 miner, which is owned and produced by Nebulous — the same company responsible for developing Sia. Calls for the fork and calls of conflicts of interest have abounded accordingly. 

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Where It All Started

In late June 2017, the team behind decentralized cloud storage project Siacoin — Nebulous — declared the creation of its new Sia mining subsidiary, Obelisk.

And Obelisk’s first project? The creation of the Obelisk SC1 ASIC Sia miner. Siacoin developer Taek42 noted the reason for building a native ASIC rather than going through a traditional manufacutrer was to avoid “delays, unexpected costs, and myriads of pitfalls.”

Accordingly, Obelisk was the first company in the space to begin publicly working on an ASIC miner for Sia. And, unsurprisingly, thousands of pre-orders began streaming in. A preliminary shipping date was set for June 30th, 2018. But a big splash was coming.

Bitmain Captures the Initiative

Mining hardware heavyweights Bitmain — producer of the popular Antminer series of miners — shocked the crypto space on January 17th, 2017, by making a surprise announcement: they’d be immediately offering their new and previously unannounced Antminer A3 Sia ASIC miner for sale.

We are proud and happy to announce that we are launching the Antminer A3, a new Antminer model to mine cryptocurrencies using the hashing algorithm Blake(2b).
The actual price and option to buy will be available here https://t.co/mrymOaMy4i after 2:30PM (17 Jan, GMT+8). pic.twitter.com/Ye0cxNn95M

— BITMAIN (@BITMAINtech) January 17, 2018

Bitmain had officially stolen the Obelisk SC1’s thunder, as it were. In winning the race to the market by six long months, Bitmain’s A3 represented a tangible challenge to the profitability of the still long-off SC1s.

Soft-Fork Floated in Response

The aforementioned Sia dev Taek42 immediately issued a response to Bitmain’s A3 announcement. The dev brought up the possibility of a soft-fork to play hardball with the manufacturing company:

“We, the dev team, are not happy that Bitmain has made an ASIC for Sia. We are not happy that many Sia supporters are at risk of losing money by buying these miners (from over-saturation), and we are not happy that Bitmain may choose to interfere with our network. This is not a commentary on general ASIC companies, this is a commentary on Bitmain specifically.

We did add an extra feature to the SC1 unit that would allow us to invalidate the Bitmain hardware without invalidating the SC1. The community would need to choose to adopt a soft-fork (it’s not something we could just magically activate, we have to change the hashing algorithm slightly), and then we could get rid of this cycle of Bitmain hardware. Of course, they could just create another round of hardware (likely taking ~3 months). And, it would hurt Bitmain customers more than it would hurt Bitmain. Bitmain has already sold around $20 million of non-refundable hardware. They have made their profit, and a soft-fork wouldn’t change that.

As much as I would like to punch Bitmain in the nose, I don’t think a soft-fork achieves what we want. If the hardware is used to harm the Sia network, either by doing double spends, rejecting soft forks, mining empty blocks, we will invalidate it without hesitation.”

And, while these comments set off a firestorm in the Siacoin community, they are also notable for being unprecedented. Never before in the history of the cryptoverse has a team of devs created their own ASIC gear only to thereafter consider blocking another company from doing the same.

Tension Remains

Two days after Taek42 proposed a possible soft-fork for Sia, the dev issued a qualified clarification:

“The Nebulous entity is not actively pursuing a fork, and I personally am not actively pursuing a fork. However, if a fork manifests from elsewhere with substantial traction, I am ready to put my weight behind it. And I believe the Nebulous entity would also put its weight behind the fork.”

And on January 25th, the Sia team released this tweet expressing an identical sentiment:

After much consideration and discussion, we've decided to not invalidate A3 miners via soft-fork unless Bitmain takes direct action to harm the Sia project. We're incredibly excited about 2018 and will move forward stronger. Full response: https://t.co/I96X8Y6VMi

— Sia Tech (@SiaTechHQ) January 25, 2018

Though talks of a fork have still been gaining some traction.

And with the hashrate in the Siacoin mining community rapidly rising over the past several hours, it appears Bitmain’s A3s are already hitting the ground running. So we’ll have to see how the situation plays out over the coming weeks.

What’s your take? Is this drama between the Siacoin community and Bitmain fair game in a free market, or have either or both parties crossed a line? Let us know what you think in the comments below. 

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Images via Medium, The Miner’s Union

Special thanks to Redditor u/mtlynch, whose overview was used for research.