> For the complete documentation index, see [llms.txt](https://developers.term.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.term.finance/periphery-contracts/blue-sheets/deployed-contracts/deployed-contracts-2.md).

# \[Base]

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The **Listing Contract** is a smart contract that implements a simplified first-come first-serve repoToken orderbook.

<table><thead><tr><th width="228.66666666666666">Listing Contract</th><th>Implementation Address</th><th>Proxy Address</th></tr></thead><tbody><tr><td>RepoTokenLinkedList</td><td><a href="https://basescan.org/address/0xd2515ed3462e843fc7a2f0f6eb01f001b7062641#code"><code>0xd2515ed3462e843fc7a2f0f6eb01f001b7062641</code></a></td><td><a href="https://basescan.org/address/0x971419cf26e78c49eae91435e3721f4c0f325380#code"><code>0x971419cf26e78c49eae91435e3721f4c0f325380</code></a></td></tr><tr><td>EventEmitter</td><td><a href="https://basescan.org/address/0x5b108D7c733F857306C0d3cbf4Aa498aE40f1F5F#code"><code>0x5b108D7c733F857306C0d3cbf4Aa498aE40f1F5F</code></a></td><td><a href="https://basescan.org/address/0x1a565e4f66642678Cb095E1E407461EB229c8A56#code"><code>0x1a565e4f66642678Cb095E1E407461EB229c8A56</code></a></td></tr></tbody></table>

The **Helper Contracts** are modular contracts that the listing contract relies on to operate

| Helper Contracts    | Implementation Address                                                                                                       |
| ------------------- | ---------------------------------------------------------------------------------------------------------------------------- |
| DiscountRateAdapter | [`0xDE00C6513682C77119c0d13d9F225b968200E5e7`](https://basescan.org/address/0xDE00C6513682C77119c0d13d9F225b968200E5e7#code) |
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