{"as_of":"2026-09-09T21:15:55.961Z","basis":{"name":"Open Treasury Yield Basis","abbreviation":"OTYB","version":"1.1.0","spec_url":"https://402rates.com/basis-spec-v1","window_days":30,"window_tolerance_days":[28,32],"annualisation":"simple","day_count":"actual/365"},"coverage":{"instruments_tracked":13,"instruments_measured":10,"instruments_quoted":2,"instruments_unavailable":1,"gaps_open":7,"deployments_tracked":16,"sources_recorded":46,"chains":["eip155:1","eip155:137","eip155:56","eip155:8453"],"families":{"price_accrual":10,"supply_accrual":3},"observation_store":{"rows":3133,"successes":3095,"failures":31,"first_day":"2024-01-03","last_day":"2026-09-09"}},"instruments":[{"instrument":"rwa.ondo.ousg","ticker":"OUSG","family":"price_accrual","currency":"USD","chains":["eip155:1","eip155:137"],"primary_source_id":"ondo.rwa_oracle.ousg","expected_basis":"measured","reason":null,"history_backfillable":false,"recorded_observations":42,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.ondo.usdy","ticker":"USDY","family":"price_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":"ondo.oracle_wrapper.usdy","expected_basis":"measured","reason":null,"history_backfillable":false,"recorded_observations":42,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.superstate.ustb","ticker":"USTB","family":"price_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":"superstate.api.nav_daily.ustb","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":981,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":true},{"instrument":"rwa.circle.usyc","ticker":"USYC","family":"price_accrual","currency":"USD","chains":["eip155:1","eip155:56"],"primary_source_id":"circle.oracle.usyc","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":162,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.openeden.tbill","ticker":"TBILL","family":"price_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":"openeden.oracle.tbill","expected_basis":"measured","reason":null,"history_backfillable":false,"recorded_observations":42,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.midas.mtbill","ticker":"mTBILL","family":"price_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":"midas.oracle.mtbill","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":162,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.openeden.cusdo","ticker":"cUSDO","family":"price_accrual","currency":"USD","chains":["eip155:1","eip155:8453"],"primary_source_id":"openeden.cusdo.vault.ethereum","expected_basis":"measured","reason":null,"history_backfillable":false,"recorded_observations":40,"newest_observation":"2026-09-09","newest_observation_age_days":0,"issuer_figure_machine_readable":false},{"instrument":"rwa.spiko.eutbl","ticker":"EUTBL","family":"price_accrual","currency":"EUR","chains":["eip155:1"],"primary_source_id":"spiko.api.nav.eutbl","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":295,"newest_observation":"2026-09-08","newest_observation_age_days":1,"issuer_figure_machine_readable":true},{"instrument":"rwa.spiko.ustbl","ticker":"USTBL","family":"price_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":"spiko.api.nav.ustbl","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":298,"newest_observation":"2026-09-08","newest_observation_age_days":1,"issuer_figure_machine_readable":true},{"instrument":"rwa.spiko.uktbl","ticker":"UKTBL","family":"price_accrual","currency":"GBP","chains":["eip155:1"],"primary_source_id":"spiko.api.nav.uktbl","expected_basis":"measured","reason":null,"history_backfillable":true,"recorded_observations":70,"newest_observation":"2026-09-08","newest_observation_age_days":1,"issuer_figure_machine_readable":true},{"instrument":"rwa.blackrock.buidl","ticker":"BUIDL","family":"supply_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":null,"expected_basis":"unavailable","reason":"no verified passive holder yet (spec §2.2); candidates are recorded; until one is verified the instrument cannot be measured","history_backfillable":false,"recorded_observations":0,"newest_observation":null,"newest_observation_age_days":null,"issuer_figure_machine_readable":false},{"instrument":"rwa.franklin.benji","ticker":"BENJI","family":"supply_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":null,"expected_basis":"quoted","reason":"no verified passive holder yet (spec §2.2); the readable history is the issuer's own N-MFP filing, which is a quoted figure rather than a state we can recompute","history_backfillable":true,"recorded_observations":0,"newest_observation":null,"newest_observation_age_days":null,"issuer_figure_machine_readable":true},{"instrument":"rwa.vaneck.vbill","ticker":"VBILL","family":"supply_accrual","currency":"USD","chains":["eip155:1"],"primary_source_id":null,"expected_basis":"quoted","reason":"no verified passive holder yet (spec §2.2); candidates are recorded; until one is verified the instrument cannot be measured","history_backfillable":false,"recorded_observations":0,"newest_observation":null,"newest_observation_age_days":null,"issuer_figure_machine_readable":true}],"known_not_covered":[{"instrument":"WTGXX","issuer":"WisdomTree Digital Trust","reason":"no machine-readable source; factsheet dated 2025-12-31 when read; issuer publishes no contract address list and Ethereum carries imposter tokens","needed":"issuer confirmation of a contract address, or a documented data endpoint"},{"instrument":"JTRSY","issuer":"Anemoy Limited / Janus Henderson","reason":"the Chronicle NAV consumer reverts on an unauthenticated call; no public API; no issuer address list","needed":"Chronicle read authorisation or an issuer endpoint"},{"instrument":"uMINT","issuer":"UBS","reason":"contract address, accrual mechanism, yield source and eligibility criteria all unestablished in primary sources","needed":"issuer response with a contract address"},{"instrument":"Fidelity Treasury Digital Liquidity Fund","issuer":"Fidelity Hereford Street Trust","reason":"registration filings exist but no N-MFP filing at all, so no yield, NAV or net assets; no token address in primary sources","needed":"first N-MFP filing, or an issuer address"},{"instrument":"bIB01 / bIBTA / bC3M","issuer":"Backed Assets (JE) Limited","reason":"no price function in the token contract; api.backed.fi answers 404 on every path tried; documentation domain geoblocked. A Chainlink Proof-of-Reserve feed exists for bIB01 but reports reserve backing, not value per share","needed":"confirm whether the issuer's announced Chainlink price feeds publish the TOKEN's value per share or only the underlying ETF price - a feed address and its description() would settle it"},{"instrument":"STBT","issuer":"Matrixdock","reason":"rebasing, but no labelled yield metric and the issuing legal entity is unestablished","needed":"a designated passive holder plus archive access for the rebase series"},{"instrument":"USDO (rebasing form)","issuer":"OpenEden Digital","reason":"rebasing, so it is supply-accrual and needs a verified passive holder; the SAME fund is covered through its price-accruing wrapper cUSDO, which is tracked","needed":"nothing for coverage of this fund's yield - a passive holder only if the rebasing form itself must be measured","resolved_by":"rwa.openeden.cusdo"},{"instrument":"ULTRA","issuer":"Libeara / FundBridge Capital, sub-manager Wellington Management","reason":"the token is live on Arbitrum as \"Delta Wellington Ultra Short Treasury Fund\" (0xc26aF85E…, ERC1967 proxy, 6 decimals, 2 holders) but the contract exposes NO price, NAV, share-value or oracle function - probed for nav, navPerShare, pricePerShare, sharePrice, getPrice, latestAnswer, latestRoundData, convertToAssets, totalAssets and exchangeRate on 2026-07-30, all absent. The address is also not on any issuer-published list, so its provenance would be a block explorer.","needed":"a NAV feed or an issuer endpoint, plus the issuer confirming the contract address"}],"disclaimer":"Informational data and calculation service only. Not investment, legal, tax or accounting advice; not an offer, solicitation, recommendation, or determination of eligibility or suitability. Source and onchain data may be inaccurate, incomplete, delayed, stale or conflicting. Verify independently. The caller remains responsible for every decision and action; 402rates.com does not execute investment transactions or hold financial assets on the caller's behalf."}