---
title: "The new Sato documentation acknowledges the existence of structural spreads in Bonding Curve trading."
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/285580416.md"
description: "Sato has released updated documentation on its Bonding Curve trading mechanism, clarifying that it is not a symmetrical exchange system. The mint and burn tokens operate under different pricing logics, with burn prices potentially lower than mint prices. Sato defines Curve as an \"issuance system + last-return buyback pool,\" focusing on token issuance initially and transitioning to a buyback function as liquidity matures. Community developers previously noted issues with ethCum and totalMintedFair, leading to inefficiencies in user transactions."
datetime: "2026-05-07T15:25:00.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/285580416.md)
  - [en](https://longbridge.com/en/news/285580416.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/285580416.md)
---

# The new Sato documentation acknowledges the existence of structural spreads in Bonding Curve trading.

Sato has released a new version of its mechanism documentation, further explaining the operating logic of Curve. The documentation reveals that Sato's Bonding Curve is not a completely symmetrical exchange system. Users' mint and burn tokens use different pricing logics, and the burn price may be structurally lower than the mint price due to adjustments. According to the documentation, Sato officially defines Curve as an "issuance system + last-return buyback pool," rather than a fully redeemable backing system. Curve primarily handles token issuance in the early stages, but after external liquidity matures, it transforms into a "last-return buyer," providing on-chain buyback functionality when secondary market liquidity is insufficient. Previously, some developers in the community pointed out a misalignment between ethCum and totalMintedFair within the Sato Hook, causing users to "buy at a high Curve and sell at a low Curve," resulting in some ETH remaining in the Hook reserve but not being fully redeemed through the selling path.

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