# FTSOv2 Reference

> Solidity reference for FTSOv2 smart contracts.

> For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL.

Source: https://dev.flare.network/ftso/solidity-reference

## Deployed Contracts[​](#deployed-contracts "Direct link to Deployed Contracts")

Contract

Address

ABI

`FtsoV2`

[`0x7BDE3Df0624114eDB3A67dFe6753e62f4e7c1d20`](https://flare-explorer.flare.network/address/0x7BDE3Df0624114eDB3A67dFe6753e62f4e7c1d20 "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0x7BDE3Df0624114eDB3A67dFe6753e62f4e7c1d20?tab=contract_abi "View contract ABI in explorer")

`FeeCalculator`

[`0xFDe4f89E6d67ec1a497e1c25944ba5D2d7a36bf3`](https://flare-explorer.flare.network/address/0xFDe4f89E6d67ec1a497e1c25944ba5D2d7a36bf3 "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0xFDe4f89E6d67ec1a497e1c25944ba5D2d7a36bf3?tab=contract_abi "View contract ABI in explorer")

`FtsoFeedIdConverter`

[`0xafEa60cabb2daB413D17b85Db82cCf6EB06a0F66`](https://flare-explorer.flare.network/address/0xafEa60cabb2daB413D17b85Db82cCf6EB06a0F66 "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0xafEa60cabb2daB413D17b85Db82cCf6EB06a0F66?tab=contract_abi "View contract ABI in explorer")

`FastUpdater`

[`0xdBF71d7840934EB82FA10173103D4e9fd4054dd1`](https://flare-explorer.flare.network/address/0xdBF71d7840934EB82FA10173103D4e9fd4054dd1 "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0xdBF71d7840934EB82FA10173103D4e9fd4054dd1?tab=contract_abi "View contract ABI in explorer")

`FastUpdatesConfiguration`

[`0xD9B6fB7F49C13C1448d0DEF4E83aFECf8E8778C8`](https://flare-explorer.flare.network/address/0xD9B6fB7F49C13C1448d0DEF4E83aFECf8E8778C8 "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0xD9B6fB7F49C13C1448d0DEF4E83aFECf8E8778C8?tab=contract_abi "View contract ABI in explorer")

`FastUpdateIncentiveManager`

[`0xd648e8ACA486Ce876D641A0F53ED1F2E9eF4885D`](https://flare-explorer.flare.network/address/0xd648e8ACA486Ce876D641A0F53ED1F2E9eF4885D "Open in explorer")

[ABI](https://flare-explorer.flare.network/address/0xd648e8ACA486Ce876D641A0F53ED1F2E9eF4885D?tab=contract_abi "View contract ABI in explorer")

Contract

Address

ABI

`FtsoV2`

[`0xC4e9c78EA53db782E28f28Fdf80BaF59336B304d`](https://coston2-explorer.flare.network/address/0xC4e9c78EA53db782E28f28Fdf80BaF59336B304d "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0xC4e9c78EA53db782E28f28Fdf80BaF59336B304d?tab=contract_abi "View contract ABI in explorer")

`FeeCalculator`

[`0x88A9315f96c9b5518BBeC58dC6a914e13fAb13e2`](https://coston2-explorer.flare.network/address/0x88A9315f96c9b5518BBeC58dC6a914e13fAb13e2 "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0x88A9315f96c9b5518BBeC58dC6a914e13fAb13e2?tab=contract_abi "View contract ABI in explorer")

`FtsoFeedIdConverter`

[`0x1224AE03e0564c4C2dD3B49B1834F2ac765a529E`](https://coston2-explorer.flare.network/address/0x1224AE03e0564c4C2dD3B49B1834F2ac765a529E "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0x1224AE03e0564c4C2dD3B49B1834F2ac765a529E?tab=contract_abi "View contract ABI in explorer")

`FastUpdater`

[`0x0B162CA3acf3482d3357972e12d794434085D839`](https://coston2-explorer.flare.network/address/0x0B162CA3acf3482d3357972e12d794434085D839 "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0x0B162CA3acf3482d3357972e12d794434085D839?tab=contract_abi "View contract ABI in explorer")

`FastUpdatesConfiguration`

[`0x222768c5AbCe56Af9Fd75c5f59614a8B7F5dBe80`](https://coston2-explorer.flare.network/address/0x222768c5AbCe56Af9Fd75c5f59614a8B7F5dBe80 "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0x222768c5AbCe56Af9Fd75c5f59614a8B7F5dBe80?tab=contract_abi "View contract ABI in explorer")

`FastUpdateIncentiveManager`

[`0xC71C1C6E6FB31eF6D948B2C074fA0d38a07D4f68`](https://coston2-explorer.flare.network/address/0xC71C1C6E6FB31eF6D948B2C074fA0d38a07D4f68 "Open in explorer")

[ABI](https://coston2-explorer.flare.network/address/0xC71C1C6E6FB31eF6D948B2C074fA0d38a07D4f68?tab=contract_abi "View contract ABI in explorer")

Contract

Address

ABI

`FtsoV2`

[`0x510600336247303f9dAA337eC7E82D1F11462Ec8`](https://songbird-explorer.flare.network/address/0x510600336247303f9dAA337eC7E82D1F11462Ec8 "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x510600336247303f9dAA337eC7E82D1F11462Ec8?tab=contract_abi "View contract ABI in explorer")

`FeeCalculator`

[`0x850580df526112CCe4B7FC135919BaE3a923b845`](https://songbird-explorer.flare.network/address/0x850580df526112CCe4B7FC135919BaE3a923b845 "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x850580df526112CCe4B7FC135919BaE3a923b845?tab=contract_abi "View contract ABI in explorer")

`FtsoFeedIdConverter`

[`0x9c20c3F1fC39F14ad0D09DE91B74a16c12a36C61`](https://songbird-explorer.flare.network/address/0x9c20c3F1fC39F14ad0D09DE91B74a16c12a36C61 "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x9c20c3F1fC39F14ad0D09DE91B74a16c12a36C61?tab=contract_abi "View contract ABI in explorer")

`FastUpdater`

[`0x7D9F73FD9bC4607daCB618FF895585f98BFDD06B`](https://songbird-explorer.flare.network/address/0x7D9F73FD9bC4607daCB618FF895585f98BFDD06B "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x7D9F73FD9bC4607daCB618FF895585f98BFDD06B?tab=contract_abi "View contract ABI in explorer")

`FastUpdatesConfiguration`

[`0x8D48a67e11CdB821C38c85FB92bcB3A1865aCEdF`](https://songbird-explorer.flare.network/address/0x8D48a67e11CdB821C38c85FB92bcB3A1865aCEdF "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x8D48a67e11CdB821C38c85FB92bcB3A1865aCEdF?tab=contract_abi "View contract ABI in explorer")

`FastUpdateIncentiveManager`

[`0x596C70Ad6fFFdb9b6158F1Dfd0bc32cc72B82006`](https://songbird-explorer.flare.network/address/0x596C70Ad6fFFdb9b6158F1Dfd0bc32cc72B82006 "Open in explorer")

[ABI](https://songbird-explorer.flare.network/address/0x596C70Ad6fFFdb9b6158F1Dfd0bc32cc72B82006?tab=contract_abi "View contract ABI in explorer")

Contract

Address

ABI

`FtsoV2`

[`0x787C2AbB211dbC5F9B239288701a3dd5ae3Af1A2`](https://coston-explorer.flare.network/address/0x787C2AbB211dbC5F9B239288701a3dd5ae3Af1A2 "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0x787C2AbB211dbC5F9B239288701a3dd5ae3Af1A2?tab=contract_abi "View contract ABI in explorer")

`FeeCalculator`

[`0x08e0CBdc9173e537208CEAd8c38f263517f54F22`](https://coston-explorer.flare.network/address/0x08e0CBdc9173e537208CEAd8c38f263517f54F22 "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0x08e0CBdc9173e537208CEAd8c38f263517f54F22?tab=contract_abi "View contract ABI in explorer")

`FtsoFeedIdConverter`

[`0x5c871668b17B604c0CAA848D8Efa7D9094748BC8`](https://coston-explorer.flare.network/address/0x5c871668b17B604c0CAA848D8Efa7D9094748BC8 "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0x5c871668b17B604c0CAA848D8Efa7D9094748BC8?tab=contract_abi "View contract ABI in explorer")

`FastUpdater`

[`0xB8336A96b4b8af89f60EA080002214191Bc8293A`](https://coston-explorer.flare.network/address/0xB8336A96b4b8af89f60EA080002214191Bc8293A "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0xB8336A96b4b8af89f60EA080002214191Bc8293A?tab=contract_abi "View contract ABI in explorer")

`FastUpdatesConfiguration`

[`0x9A53e14B58383642cdB2bb4D5C46989F05C6B5f9`](https://coston-explorer.flare.network/address/0x9A53e14B58383642cdB2bb4D5C46989F05C6B5f9 "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0x9A53e14B58383642cdB2bb4D5C46989F05C6B5f9?tab=contract_abi "View contract ABI in explorer")

`FastUpdateIncentiveManager`

[`0x8c45666369B174806E1AB78D989ddd79a3267F3b`](https://coston-explorer.flare.network/address/0x8c45666369B174806E1AB78D989ddd79a3267F3b "Open in explorer")

[ABI](https://coston-explorer.flare.network/address/0x8c45666369B174806E1AB78D989ddd79a3267F3b?tab=contract_abi "View contract ABI in explorer")

## Interfaces[​](#interfaces "Direct link to Interfaces")

[

## FtsoV2Interface

Primary interface for interacting with FTSOv2.

](/ftso/solidity-reference/FtsoV2Interface)

[

## IFeeCalculator

Interface for calculating block-latency feed fees.

](/ftso/solidity-reference/IFeeCalculator)

[

## IFtsoFeedIdConverter

Interface for converting feed names to feed ids.

](/ftso/solidity-reference/IFtsoFeedIdConverter)

[

## IFastUpdater

Interface for updating block-latency feeds.

](/ftso/solidity-reference/IFastUpdater)

[

## IFastUpdatesConfiguration

Interface for the block-latency feed configuration.

](/ftso/solidity-reference/IFastUpdatesConfiguration)

[

## IFastUpdateIncentiveManager

Interface for making volatility incentive offers.

](/ftso/solidity-reference/IFastUpdateIncentiveManager)