Pendle
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Research pendle
specifically for potential collateral types and oracles
GYGP = Generic Yield Generating Pool
SY = standardized yield
PT = principal token (the principle token stripped of its yield)
YT = yield token (the yield of a token stripped of it's principle)
S = shares
t = time
u = user
docs: https://github.com/pendle-finance/pendle-v2-resources/blob/main/whitepapers/SY.pdf
the base standardized yield contract:
https://github.com/pendle-finance/pendle-core-v2-public/blob/main/contracts/core/StandardizedYield/SYBase.sol
wsteth specific implementation:
https://github.com/pendle-finance/pendle-core-v2-public/blob/main/contracts/core/StandardizedYield/implementations/PendleWstEthSY.sol
PT tokens are always exchangeable 1 to 1 for their underlying asset.