# Arbitrum

Proxy contract: [0x8f8BccE4c180B699F81499005281fA89440D1e95](https://arbiscan.io/address/0x8f8BccE4c180B699F81499005281fA89440D1e95)

Limit Order Book Factory: [0xEB622bf7a42e480971A6558BEa17f1Eb7e628F2e](https://arbiscan.io/address/0xEB622bf7a42e480971A6558BEa17f1Eb7e628F2e)

### WEETH Pool

<figure><img src="https://1690371742-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsivfyCjOhJUkKrxqsPg4%2Fuploads%2FXxq2LoSOWjBi1N0KO9AU%2Fimage.png?alt=media&#x26;token=160fcd51-2f81-46bd-8a02-665e3eab99f3" alt=""><figcaption></figcaption></figure>

#### Collateral

weETH, [0x35751007a407ca6FEFfE80b3cB397736D2cf4dbe](https://arbiscan.io/address/0x35751007a407ca6FEFfE80b3cB397736D2cf4dbe) ([etherfi.gitbook.io](https://etherfi.gitbook.io/etherfi/ether.fi-whitepaper))

Pyth Price Feed Id (ETH-USD):  0xff61491a931112ddf1bd8147cd1b641375f79f5825126d665480874634fd0ace\
\+ onchain price for weETH-ETH

#### Settlement Currency

Equal to collateral currency

#### Perpetuals

<table><thead><tr><th width="114">Id</th><th width="137">Perpetual</th><th>Index Price Feed Id* (Pyth)</th><th>Order Book</th></tr></thead><tbody><tr><td>200000</td><td>ETH-USD</td><td>0xff61491a931112ddf1bd8147cd1b641375f79f5825126d665480874634fd0ace</td><td><a href="https://arbiscan.io/address/0x0437895d50621B88aF36D5659bD19656cB20A447">0x0437895d50621B88aF36D5659bD19656cB20A447</a></td></tr></tbody></table>

#### Financial Contract Specification ETH-USD-WEETH

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>ETH-USDC</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual</td><td></td></tr><tr><td>Contract</td><td>1 ETH per index point, with minimal contract size 0.01 ETH</td><td></td></tr><tr><td>Lot Size</td><td>0.001 ETH</td><td></td></tr><tr><td>Initial Margin</td><td>4% (25x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.0001 WEETH</td><td></td></tr></tbody></table>

### USDC Pool

<figure><img src="https://1690371742-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsivfyCjOhJUkKrxqsPg4%2Fuploads%2FXxq2LoSOWjBi1N0KO9AU%2Fimage.png?alt=media&#x26;token=160fcd51-2f81-46bd-8a02-665e3eab99f3" alt=""><figcaption></figcaption></figure>

#### Collateral

STUSD (Angle Staked USDA), [0x0022228a2cc5E7eF0274A7Baa600d44da5aB5776](https://arbiscan.io/address/0x0022228a2cc5E7eF0274A7Baa600d44da5aB5776) (<https://angle.money/>)

Pyth Price Feed Id: on-chain

#### Settlement Currency

USDC [0xaf88d065e77c8cC2239327C5EDb3A432268e5831](https://arbiscan.io/token/0xaf88d065e77c8cC2239327C5EDb3A432268e5831)&#x20;

Pyth Price Feed Id: 0xeaa020c61cc479712813461ce153894a96a6c00b21ed0cfc2798d1f9a9e9c94a&#x20;

Traders and LPs add their funds in settlement currency (USDC). The smart contracts exchanges the collateral at the index prices (no slippage) into STUSD, so that traders earn the STUSD yield (see <https://www.angle.money/stusd>) on their margin, and LPs earn STUSD yield on top of the pool yield.

#### Perpetuals

<table><thead><tr><th width="114">Id</th><th width="137">Perpetual</th><th>Index Price Feed Id* (Pyth)</th><th>Order Book</th></tr></thead><tbody><tr><td>300000</td><td>EUR-USD</td><td>0xa995d00bb36a63cef7fd2c287dc105fc8f3d93779f062f09551b0af3e81ec30b</td><td><a href="https://arbiscan.io/address/0x6Dc4a1c60A69e33ac6A96f1a8996CfF1d06FACf8">0x6Dc4a1c60A69e33ac6A96f1a8996CfF1d06FACf8</a></td></tr><tr><td>300001</td><td>BTC-USD</td><td>0xe62df6c8b4a85fe1a67db44dc12de5db330f7ac66b72dc658afedf0f4a415b43</td><td><a href="https://arbiscan.io/address/0x353dab1d264a0a8af4010f6d97a019a89b83cf3e">0x353dab1d264a0a8af4010f6d97a019a89b83cf3e</a></td></tr><tr><td>300002</td><td>XAU-USD</td><td>0x765d2ba906dbc32ca17cc11f5310a89e9ee1f6420508c63861f2f8ba4ee34bb2</td><td><a href="https://arbiscan.io/address/0x77b58b1e639a6b1293e4678040a6686acee11837">0x77B58B1e639A6B1293e4678040A6686Acee11837</a></td></tr><tr><td>300003</td><td>ZRO-USD</td><td>0x3bd860bea28bf982fa06bcf358118064bb114086cc03993bd76197eaab0b8018</td><td><a href="https://arbiscan.io/address/0x48827Ac99cAedaF1b9060aAdB959d2E180C67818">0x48827Ac99cAedaF1b9060aAdB959d2E180C67818</a></td></tr><tr><td>300004</td><td>SOL-USD</td><td>0xef0d8b6fda2ceba41da15d4095d1da392a0d2f8ed0c6c7bc0f4cfac8c280b56d</td><td><a href="https://arbiscan.io/address/0xa67ceE4929856E1F7cF5AF72875959C98db80a61">0xa67ceE4929856E1F7cF5AF72875959C98db80a61</a></td></tr><tr><td>300005</td><td>PENDLE-USD</td><td>0x9a4df90b25497f66b1afb012467e316e801ca3d839456db028892fe8c70c8016</td><td><a href="https://arbiscan.io/address/0x5a4aE82d4eeDDe368E0675d377C139feAB155F60">0x5a4aE82d4eeDDe368E0675d377C139feAB155F60</a></td></tr><tr><td>300006</td><td>GBP-USD</td><td>0x84c2dde9633d93d1bcad84e7dc41c9d56578b7ec52fabedc1f335d673df0a7c1</td><td><a href="https://arbiscan.io/address/0x802F6B1cC3F7Df4801Ab0293A60D93F98C8dB16E">0x802F6B1cC3F7Df4801Ab0293A60D93F98C8dB16E</a></td></tr><tr><td>300007</td><td>JPY-USD</td><td>0xef2c98c804ba503c6a707e38be4dfbb16683775f195b091252bf24693042fd52</td><td><a href="https://arbiscan.io/address/0x40f1f365b143363D48A8d44E11897b3BbfFECE3f">0x40f1f365b143363D48A8d44E11897b3BbfFECE3f</a></td></tr><tr><td>300008</td><td>CHF-USD</td><td>0x0b1e3297e69f162877b577b0d6a47a0d63b2392bc8499e6540da4187a63e28f8</td><td><a href="https://arbiscan.io/address/0x074eDC72326Da865E0F6F99F4c33b17d96FFEc34">0x074eDC72326Da865E0F6F99F4c33b17d96FFEc34</a></td></tr><tr><td>300009</td><td>TON-USD</td><td>0x8963217838ab4cf5cadc172203c1f0b763fbaa45f346d8ee50ba994bbcac3026</td><td><a href="https://arbiscan.io/address/0x0BEa555f3EFEa98E0bB3a389F7db6f141C3ae0c8">0x0BEa555f3EFEa98E0bB3a389F7db6f141C3ae0c8</a></td></tr><tr><td>300010</td><td>SHIB-USD</td><td>0xf0d57deca57b3da2fe63a493f4c25925fdfd8edf834b20f93e1f84dbd1504d4a</td><td><a href="https://arbiscan.io/address/0xB612a762aD7dc5f638727C96E0fDc801EA313544">0xB612a762aD7dc5f638727C96E0fDc801EA313544</a></td></tr><tr><td>300012</td><td>WIF-USD</td><td>0x4ca4beeca86f0d164160323817a4e42b10010a724c2217c6ee41b54cd4cc61fc</td><td><a href="https://arbiscan.io/address/0x3D835EeaecbBee882521886b1627141C17DBBad0">0x3D835EeaecbBee882521886b1627141C17DBBad0</a></td></tr><tr><td>300013</td><td>BNB-USD</td><td>0x2f95862b045670cd22bee3114c39763a4a08beeb663b145d283c31d7d1101c4f</td><td><a href="https://arbiscan.io/address/0xC75a6A7e5742edd2892E1f5CA9D7965B047006D3">0xC75a6A7e5742edd2892E1f5CA9D7965B047006D3</a></td></tr></tbody></table>

#### Financial Contract Specification EUR-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>EUR-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual</td><td></td></tr><tr><td>Contract</td><td>1 EUR per index point, with minimal contract size 10 EUR</td><td></td></tr><tr><td>Lot Size</td><td>1 EUR</td><td></td></tr><tr><td>Initial Margin</td><td>1% (100x leverage) </td><td></td></tr><tr><td>Maintenance Margin</td><td>0.5% (200x leverage) </td><td></td></tr><tr><td>Execution Fee</td><td>0.11 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification BTC-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>BTC-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 BTC per index point, with minimal contract size 0.0001 BTC</td><td></td></tr><tr><td>Lot Size</td><td>0.00001</td><td></td></tr><tr><td>Initial Margin</td><td>4% (25x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification XAU-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>XAU-USD; spot gold is quoted in USD per ounce </td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 XAU (ounce of gold) per index point, with minimal contract size 0.01 XAU</td><td></td></tr><tr><td>Lot Size</td><td>0.001 XAU</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification ZRO-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>ZRO-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 ZRO (<a href="https://www.coingecko.com/en/coins/layerzero">https://www.coingecko.com/en/coins/layerzero</a>) per index point, with minimal contract size 10 ZRO</td><td></td></tr><tr><td>Lot Size</td><td>1 ZRO</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification SOL-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>SOL-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 SOL (<a href="https://www.coingecko.com/en/coins/solana">https://www.coingecko.com/en/coins/solana</a>) per index point, with minimal contract size 0.1 SOL</td><td></td></tr><tr><td>Lot Size</td><td>0.01 SOL</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification PENDLE-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>PENDLE-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 PENDLE (<a href="https://www.coingecko.com/en/coins/pendle">https://www.coingecko.com/en/coins/pendle</a>) per index point, with minimal contract size 10 PENDLE</td><td></td></tr><tr><td>Lot Size</td><td>1 PENDLE</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification GBP-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>GBP-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 GBP per index point, with minimal contract size 10 GBP</td><td></td></tr><tr><td>Lot Size</td><td>1 GBP</td><td></td></tr><tr><td>Initial Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>1% (100x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.11 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification JPY-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>JPY-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 JPY per index point, with minimal contract size 1000 JPY</td><td></td></tr><tr><td>Lot Size</td><td>100 JPY</td><td></td></tr><tr><td>Initial Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>1% (100x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.11 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification CHF-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>CHF-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 CHF per index point, with minimal contract size 10 CHF</td><td></td></tr><tr><td>Lot Size</td><td>1 CHF</td><td></td></tr><tr><td>Initial Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>1% (100x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.11 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification TON-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>TON-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 TON  (<a href="https://www.coingecko.com/en/coins/toncoin">https://www.coingecko.com/en/coins/toncoin</a>) per index point, with minimal contract size 1 TON</td><td></td></tr><tr><td>Lot Size</td><td>0.1</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification SHIB-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>SHIB-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 SHIB  (<a href="https://www.coingecko.com/en/coins/shiba-inu">https://www.coingecko.com/en/coins/shiba-inu</a>) per index point, with minimal contract size 1'000'000 SHIB</td><td></td></tr><tr><td>Lot Size</td><td>100'000</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification WIF-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>WIF-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 WIF  (<a href="https://www.coingecko.com/en/coins/dogwifhat">https://www.coingecko.com/en/coins/dogwifhat</a>) per index point, with minimal contract size 10 WIF</td><td></td></tr><tr><td>Lot Size</td><td>1</td><td></td></tr><tr><td>Initial Margin</td><td>5% (20x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>3% (33x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

#### Financial Contract Specification BNB-USD-STUSD

<table data-header-hidden><thead><tr><th width="216"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Underlying Asset</td><td>BNB-USD</td><td></td></tr><tr><td>Instrument Type</td><td>Quanto Perpetual with settlement currency USDC and collateral currency STUSD</td><td></td></tr><tr><td>Contract</td><td>1 BNB  (<a href="https://www.coingecko.com/en/coins/bnb">https://www.coingecko.com/en/coins/bnb</a>) per index point, with minimal contract size 0.01 BNB</td><td></td></tr><tr><td>Lot Size</td><td>0.001 </td><td></td></tr><tr><td>Initial Margin</td><td>4% (25x leverage)</td><td></td></tr><tr><td>Maintenance Margin</td><td>2% (50x leverage)</td><td></td></tr><tr><td>Execution Fee</td><td>0.25 STUSD</td><td></td></tr></tbody></table>

### USDC Pool for leveraged prediction markets

<figure><img src="https://1690371742-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FsivfyCjOhJUkKrxqsPg4%2Fuploads%2FXxq2LoSOWjBi1N0KO9AU%2Fimage.png?alt=media&#x26;token=160fcd51-2f81-46bd-8a02-665e3eab99f3" alt=""><figcaption></figcaption></figure>

#### Collateral

USDC [0xaf88d065e77c8cC2239327C5EDb3A432268e5831](https://arbiscan.io/token/0xaf88d065e77c8cC2239327C5EDb3A432268e5831)&#x20;

Pyth Price Feed Id: 0xeaa020c61cc479712813461ce153894a96a6c00b21ed0cfc2798d1f9a9e9c94a&#x20;

#### Settlement Currency

Same as collateral currency.

#### Prediction Markets

What do the prices mean? Prices reflect odds of 50% Yes and 50% No. When it ends, the correct outcome will be $1 and incorrect $0.

Margin is dependent on current price. Initial max leverage from 2 (at P(X[^1]) = 0.5) to 5 (at P(X) close to 1). P stands for probability. X is a random variable standing for the different outcomes, e.g. X stands for the "Yes" outcome of a particular bet.&#x20;

Initial Margin and Maintenance Margin Formula is listed in contract specifications below as a function of current market prices.

<table><thead><tr><th width="115">Id</th><th width="125">Perpetual</th><th>Index Price Feed Id* (Odin)</th><th>Order Book</th></tr></thead><tbody><tr><td>100000</td><td>TRUMPUKR-USD</td><td></td><td></td></tr></tbody></table>

\*triangulated via USD-USDC price index

#### Financial Contract Specification TRUMPUKR-USDC-USDC

<table data-header-hidden><thead><tr><th width="219"></th><th></th><th data-hidden></th></tr></thead><tbody><tr><td>Question</td><td>"Trump ends Ukraine war in first 90 days?"</td><td></td></tr><tr><td>Underlying Asset</td><td>Yes-Token of betting market <a href="https://polymarket.com/event/trump-wins-ends-ukraine-war-in-90-days?tid=1742464060968">https://polymarket.com/event/trump-wins-ends-ukraine-war-in-90-days?tid=1742464060968</a></td><td></td></tr><tr><td>Instrument Type</td><td>Leveraged Prediction Instrument</td><td></td></tr><tr><td>Contract</td><td>1 TRUMPUKR per index point, with minimal contract size 10 TRUMPUKR</td><td></td></tr><tr><td>Lot Size</td><td>1 TRUMPUKR</td><td></td></tr><tr><td>Initial Margin</td><td>0.2+(0.5-0.2) * h(p); <br>p equals current market price, h(·) Shannon Entropy function</td><td></td></tr><tr><td>Maintenance Margin</td><td>0.18+(0.4-0.18) * h(p), p equals current market price, h(·) Shannon Entropy function</td><td></td></tr><tr><td>Execution Fee</td><td>0.1 USDC</td><td></td></tr></tbody></table>

[^1]: think about it later how to denote it as we have two P's in our docs that could confuse people: P for price and P for probability