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rwa-yield-accuracy Sprint 4: activate USTB + OUSG, flip bench live#1359

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Flotapponnier merged 1 commit into
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feat/rwa-yield-ustb-ousg-live
Jul 24, 2026
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rwa-yield-accuracy Sprint 4: activate USTB + OUSG, flip bench live#1359
Flotapponnier merged 1 commit into
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feat/rwa-yield-ustb-ousg-live

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Summary

Bench 089 goes from cohort=1 (USDY only) to cohort=3 live.

  • USTB: reads Superstate Chainlink NAV feed `0x289B5036cd942e619E1Ee48670F98d214E745AAC` (decimals=6, NAV-accrual model).
  • OUSG: reads Ondo oracle `0x9Cad45a8BF0Ed41Ff33074449B357C7a1fAb4094` via `getAssetPrice(OUSG)` (Aave IPriceOracle, 18 decimals USD). No more off-chain HTTP dep.
  • BUIDL + BENJI stay dormant, notes updated with real reasons.
  • Default RPC flipped to `https://eth.drpc.org\` (publicnode rejects archive reads).

Live numbers on VPS

Token Delivered 30d Promised Deviation
USTB 387 bps 352 +35
OUSG 334 bps 350 -16
USDY -901 bps 355 -1256 (known bug)

Known follow-up

USDY Ethereum totalSupply shrinks from bridge burns > rebase. Reports negative yield. Fix in a separate PR (need reward multiplier read or cross-chain aggregation).

Test plan

  • `go build` clean local + VPS
  • Container up on `ocb-par-main`, prom target UP
  • All 3 metrics scraped correctly

USTB via Superstate Chainlink NAV feed (0x289B5036...); OUSG via
Ondo Aave-style oracle getAssetPrice (0x9Cad45a8...). Cohort 1 -> 3
probes. RPC default flipped to https://eth.drpc.org (publicnode
rejects archive reads needed for t-30d / t-7d historical eth_call).

BUIDL + BENJI stay dormant with clarified notes: BUIDL because
distributor calls bulkIssuance (yield mints conflate with new
subscriptions); BENJI because Ethereum wrapper has no on-chain NAV
function, awaiting Franklin API confirmation.

Live 30d numbers from VPS:
  USTB: 387 bps (vs 352 promised, +35)
  OUSG: 334 bps (vs 350 promised, -16)
@Flotapponnier
Flotapponnier merged commit ec1cfd1 into dev Jul 24, 2026
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