Founder of Compound votes against using wrapped Bitcoin as collateral, deems WBTC "risky"

Robert Leshner, the founder of Compound, has voted against the latest proposal to increase the WBTC collateral factor on the platform from 0 to 65 percent.

Leshner defended his decision by saying collateral in WBTC was currently too risky due to low liquidity and a high possibility of a technical flaw that could wipe out all assets in Compound.

Looking to follow in the steps of MakerDAO, which just recently started supporting wrapped Bitcoin, Compound users proposed another change to the protocol that would allow its users to borrow against WBTC. The earlier discussion which happened 2 months ago suggested increasing the WBTC collateral factor from its current level of zero to anywhere between 50 percent and 75 percent.

Instadapp founder suggested that the optimal collateral factor should be 66 percent in order to match the collateral factor on MakerDAO. Users that suggested the change argue that adding WBTC will create a more diversified base for collateralized assets, as ETH is currently the most significant asset used as collateral on Compound with more than $70 million worth of ETH supplied so far.

Adding WBTC would also make it easier to port the debt position between Compound and MakerDAO to find the best interest rates and create a more efficient market, it said in the discussion.

While 75 addresses voted for setting the WBTC collateral factor to 66 percent, only 27 addresses voted against it.

He explained that adding WBTC as collateral could lead to a collapse in the "Basis" between BTC and WBTC.For WBTC, the risk is not a collapse in Bitcoin; but rather the "Basis" between $BTC and $WBTC. There are two risks: a total collapse of WBTC, and a market disruption in WBTC. - Leshner July 7, 2020.

"WBTC is untested in the Compound liquidation process, and the on/off-ramp to BTC is slow, and bottlenecked through WBTC merchants."

With over $1.5 billion supplied to the protocol, WBTC simply can't provide the liquidity required for Compound to run.

While BTC has greater market liquidity than DAI, USDC, and ETH, wrapped Bitcoin has a centralized point of failure as it's an ERC-20 token backed 1:1 with BTC. Aside from the possibility of WBTC failing as a platform, WBTC's daily trading volume of around $500,000 means that liquidators won't be able to find profitable arbitrage opportunities if the market got more volatile.