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That is, indeed, the week spot in these constructs. Commonly, oracles are composed of an aggregate of multiple independent providers. So roughly a majority of
by 3np 5y ago
That is, indeed, the week spot in these constructs.
Commonly, oracles are composed of an aggregate of multiple independent providers. So roughly a majority of them have to collude to manipulate the price and you would have to take multiple oracle providers down to stop the price updates.
Any token derivative that relies on one or a few providers are very risky.
ChainLink (the mainstream choice today) doesn't seem to be officially providing stock prices, but to give you an idea there are currently 16 providers for gold-USD prices: https://data.chain.link/ethereum/mainnet/commodities/xag-usd https://data.chain.link/ethereum/mainnet/commodities/xag-usd
- 3np 5y agoI forgot to add, re Chainlink: Chainlink can, as a single party, remove and add providers to the oracle feeds. So in this case, they are the one SPoF here. Maybe that will change with the introduction of some governance system at some point as things mature and stabilize, but presently despite the smoke and mirrors they can be coerced or compelled to shut down individual price-feeds. In principle this could be "unstoppable", but as of right now it is not.