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Kerne Honesty Index

YieldFi yUSD

In recovery . ethereum . 0x19ebd191f7a24ece672ba13a302212b5ef7f35cb

What this vault advertises, against what it actually paid, measured from its own share price on chain over a 30 day window. Everything below is recomputed hourly and every figure on this page comes from the snapshot named at the bottom. Nothing here is typed by hand.

Advertised

none published

Realized

0.00%

30 day window

Gap

no claim to compare

this protocol advertises no yield figure.

What YieldFi published.

YieldFi publishes no yield figure we can record for yUSD on a first-party surface, so this row carries a realized reading and no comparison. That is a description of what is published, not an accusation.

Recompute it yourself.

The realized figure is two calls and one exponent. Both calls are pinned to a block height, so they return the same values for you as they did for us, forever. Use any archive endpoint. We deliberately do not name one: a reproduction that runs on our RPC is not a reproduction.

The call

Chain

ethereum

Contract

0x19ebd191f7a24ece672ba13a302212b5ef7f35cb

Method

convertToAssets(uint256)

Argument

1000000000000000000 (one whole yUSD share, 18 decimals)

eth_call data

0x07a2d13a0000000000000000000000000000000000000000000000000de0b6b3a7640000

Returns

USDC, 6 decimals

The argument is one whole share in the SHARE token's own decimals, which is not always eighteen. Kerne's own skUSD reports twenty four, so calling it with 1e18 returns a millionth of the right answer. Ask the vault for its decimals rather than assuming, exactly as our collector does.

At the start of the window

Block

25860655 (0x18a9a2f)

Timestamp

1788003419 (2026-08-29 11:36 UTC)

Share price returned

0.998453

At the end of the window

Block

26075697 (0x18de231)

Timestamp

1790595419 (2026-09-28 11:36 UTC)

Share price returned

0.998453

Start of window, cast

RPC_URL=... cast call 0x19ebd191f7a24ece672ba13a302212b5ef7f35cb "convertToAssets(uint256)(uint256)" 1000000000000000000 --block 25860655 --rpc-url "$RPC_URL"

End of window, cast

RPC_URL=... cast call 0x19ebd191f7a24ece672ba13a302212b5ef7f35cb "convertToAssets(uint256)(uint256)" 1000000000000000000 --block 26075697 --rpc-url "$RPC_URL"

Start of window, raw JSON-RPC

{"jsonrpc":"2.0","id":1,"method":"eth_call","params":[{"to":"0x19ebd191f7a24ece672ba13a302212b5ef7f35cb","data":"0x07a2d13a0000000000000000000000000000000000000000000000000de0b6b3a7640000"},"0x18a9a2f"]}

End of window, raw JSON-RPC

{"jsonrpc":"2.0","id":1,"method":"eth_call","params":[{"to":"0x19ebd191f7a24ece672ba13a302212b5ef7f35cb","data":"0x07a2d13a0000000000000000000000000000000000000000000000000de0b6b3a7640000"},"0x18de231"]}

Both calls return an integer in the smallest unit of USDC. Divide by 10 ** 6 to get the share price printed above. Set RPC_URL to any archive endpoint you trust.

The arithmetic

growth = 0.998453 / 0.998453

elapsed = 1790595419 - 1788003419 = 2592000 seconds

annualized = (growth ^ (31536000 / 2592000) - 1) * 100

= 0% (0% over the window)

Simple compounding at the observed rate, on a 365 day year. No fee assumption, no reinvestment assumption, no smoothing. If your arithmetic lands somewhere else, that disagreement is the finding and we want it: liam@kerne.fi.

YieldFi's right of reply.

YieldFi did not ask to be measured and has not sent a reply. This slot is open, free, permanent and published unedited, including a reply arguing that our method is wrong. Nothing is charged for it and nothing is offered in exchange.

The terms, and the form, are at the Right of Reply. If the disagreement is about arithmetic rather than framing, the faster door is the checker: send the two block heights and the two share prices you read, and the figure is corrected in public.

Context for this row.

Paused and publishing no yield figure. YieldFi's own site carries a notice at the top of the page stating that mint and redeem operations for yUSD are paused until it seeks remediation from a named counterparty under a contractual agreement, and its APY widget renders no loaded figure. The share price has not moved for months and over the trailing year it FELL rather than rose, which is unusual on this board and is the reason this row was held back when the vault was first measured on 2026-07-29: a decline has a cause, and we said at the time that we would not publish the number until the cause could be stated. It now can be, from the issuer's own surface, so the row is here. Read it as a paused protocol rather than as a verdict. A vault that stops accruing while its operator says publicly that it is pausing and seeking remediation is disclosing, which is more than a silent one does. The dollar itself traded within a fraction of a cent of par when this row was added, so the fall is in the vault's share price rather than in the peg of the asset it is denominated in.

This page measures one axis and one only: advertised yield against realized yield. It is not a rating, not an audit, and it says nothing about whether YieldFi is safe or whether its reserves are what it says they are. A protocol in an announced wind down paying nothing is behaving correctly. The reserve axis is a different page, at the reserve transparency scorecard.

Take this row with you.

This page

https://kerne.fi/honesty-index/yieldfi-yusd

Citation

Kerne Honesty Index, 2026-09-28: YieldFi (yUSD) advertised none published, realized 0.00% from on-chain share-price growth, gap no claim to compare (this protocol advertises no yield figure). Source: https://kerne.fi/honesty-index#row-yieldfi-yusd

Badge, markdown

[![Kerne Honesty Index](https://kerne.fi/honesty-badge.svg?row=yieldfi-yusd)](https://kerne.fi/honesty-index#row-yieldfi-yusd)

Badge, HTML

<a href="https://kerne.fi/honesty-index#row-yieldfi-yusd"><img src="https://kerne.fi/honesty-badge.svg?row=yieldfi-yusd" width="360" height="112" loading="lazy" alt="Kerne Honesty Index: advertised versus realized yield"></a>

Row in the API

https://kerne.fi/api/honesty-index/row/yieldfi-yusd
Kerne Honesty Index badge for YieldFi

Where these numbers came from.

Snapshot generated

2026-09-28 11:37 UTC

Snapshot source

live store

Signature

verified, signer 0x84949170e0ad0f9bd8686a4aa4922c10f5fdc4ea

Row key

yieldfi-yusd

The signature is checked on every render rather than assumed from the presence of a field. A snapshot that does not verify is served with that said plainly instead of borrowing the word.

Board last read 2026-09-28. Every figure on this page is regenerated from https://kerne.fi/honesty-index and none of them is stored in this file.