SvmBNB Chain Integration Guide

Domains

Description	Testnet URL	Mainnet URL
REST Endpoint to query specific reports	https://live-api-test.apro.com	https://live-api.apro.com

Program IDs

Description	Devnet	Mainnet
Apro_SVM_Oracle	4Mvy4RKRyJMf4PHavvGUuTj9agoddUZ9atQoFma1tyMY	4Mvy4RKRyJMf4PHavvGUuTj9agoddUZ9atQoFma1tyMY
Sample_Client	HUJ8ouH6fVonhF1hPV6ENoLid5nbHfyZSpvfujw6X6Hm	HUJ8ouH6fVonhF1hPV6ENoLid5nbHfyZSpvfujw6X6Hm

Authentication

Headers

All routes require the following two headers for user authentication:

Header	Description
Authorization	The user’s unique identifier, provided as a UUID (Universally Unique IDentifier).
X-Authorization-Timestamp	The current timestamp, with precision up to milliseconds. The timestamp must closely synchronize with the server time, allowing a maximum discrepancy of 5 seconds (by default). For a value of 10 digits, it is multiplied directly by 1000 to milliseconds.

To get authorization, please contact our BD Team:

• Email: [email protected]

• Telegram: Head of Business Development

API endpoints

1. Return a single report at a given timestamp

Endpoint

/api/svmbnb/reports

Type	Description	Parameter(s)
HTTP GET	Returns a single report for a given timestamp.	feedID: A Data Streams feed ID. timestamp: The Unix timestamp for the report.

Sample request

GET /api/svmbnb/reports?feedID=<feedID>&timestamp=<timestamp>

Sample response

1. Return a single report with the latest timestamp

Endpoint

/api/svmbnb/reports/latest

Type	Parameter(s)
HTTP GET	feedID: A Data Streams feed ID.

Sample request

GET /api/svmbnb/reports/latest?feedID=<feedID>

Sample response

1. Return a report for multiple FeedIDs at a given timestamp

Endpoint

/api/svmbnb/reports/bulk

Type	Description	Parameter(s)
HTTP GET	Return a report for multiple FeedIDs at a given timestamp.	feedIDs: A comma-separated list of Data Streams feed IDs. timestamp: The Unix timestamp for the first report or the string 'latest' for getting the latest report.

Sample request

GET /api/svmbnb/reports/bulk?feedIDs=<FeedID1>,<FeedID2>,...&timestamp=<timestamp>

GET /api/svmbnb/reports/bulk?feedIDs=<FeedID1>,<FeedID2>,...&timestamp=latest

Sample response

1. Return multiple sequential reports for a single FeedID, starting at a given timestamp

Endpoint

/api/svmbnb/reports/page

Type	Description	Parameter(s)
HTTP GET	Return multiple sequential reports for a single FeedID, starting at a given timestamp.	feedID: A Data Streams feed ID. startTimestamp: The Unix timestamp for the first report. limit (optional): The number of reports to return.

Sample request

GET /api/svmbnb/reports/page?feedID=<FeedID>&startTimestamp=<StartTimestamp>&limit=<Limit>

Sample response

1. WebSocket Connection

Establish a streaming WebSocket connection that sends reports for the given feedID(s) after they are verified.

Endpoint

/api/svmbnb/ws

Type	Parameter(s)
WebSocket	feedIDs: A comma-separated list of Data Streams feed IDs.

Sample request

GET /api/svmbnb/ws?feedIDs=<feedID1>,<feedID2>,...

Sample response

Price Feed ID

Devnet:

Feed	Information
ETH/USD	ID: 0x0003555ace6b39aae1b894097d0a9fc17f504c62fea598fa206cc6f5088e6e45 Decimals: 18 oracle_state_ID: 2
SOL/USD	ID: 0x000343ec7f6691d6bf679978bab5c093fa45ee74c0baac6cc75649dc59cc21d3 Decimals: 18 oracle_state_ID: 4
USDC/USD	ID: 0x00034b881a0c0fff844177f881a313ff894bfc6093d33b5514e34d7faa41b7ef Decimals: 18 oracle_state_ID: 6
BNB/USD	ID: 0x00039630e8b9343f7fccdecf67bf1a59fe8d2b58e4e8d3246a74f5cd6d6fed5d Decimals: 18 oracle_state_ID: 8

Mainnet:

Feed	Information
ETH/USD	ID: 0x0003555ace6b39aae1b894097d0a9fc17f504c62fea598fa206cc6f5088e6e45 Decimals: 18 oracle_state_ID: 2
USDC/USD	ID: 0x00034b881a0c0fff844177f881a313ff894bfc6093d33b5514e34d7faa41b7ef Decimals: 18 oracle_state_ID: 5
BNB/USD	ID: 0x00039630e8b9343f7fccdecf67bf1a59fe8d2b58e4e8d3246a74f5cd6d6fed5d Decimals: 18 oracle_state_ID: 6
SOL/USD	ID: 0x000343ec7f6691d6bf679978bab5c093fa45ee74c0baac6cc75649dc59cc21d3 Decimals: 18 oracle_state_ID: 7

Error response codes

Status Code	Description
400 Bad Request	This error is triggered when: There is any missing/malformed query argument. Required headers are missing or provided with incorrect values.
401 Unauthorized User	This error is triggered when: Authentication fails, typically because the HMAC signature provided by the client doesn't match the one expected by the server. A user requests access to a feed without the appropriate permission or that does not exist.
500 Internal Server	Indicates an unexpected condition encountered by the server, preventing it from fulfilling the request. This error typically points to issues on the server side.
206 Missing data (/bulk endpoint only)	Indicates that at least one feed ID data is missing from the report. E.g., you requested a report for feed IDs <feedID1>, <feedID2>, and <feedID3> at a given timestamp. If data for <feedID2> is missing from the report (not available yet at the specified timestamp), you get [<feedID1 data>, <feedID3 data>] and a 206 response.

Sample Integration Program

oracle_sdk:

use anchor_lang::prelude::*;
use anchor_lang::solana_program::hash::hash;
use anchor_lang::solana_program::instruction::Instruction;
use anchor_lang::solana_program::program::invoke;

pub const APRO_SVM_PROGRAM_ID: &str = "4Mvy4RKRyJMf4PHavvGUuTj9agoddUZ9atQoFma1tyMY";

pub fn load_price_feed_from_account_info(price_account_info: &AccountInfo) -> Result<PriceFeed> {
    let data = price_account_info.try_borrow_data()?;

    let mut price_feed_data = &data[8..];
    let price_feed = PriceFeed::deserialize(&mut price_feed_data)?;

    Ok(price_feed)
}

pub fn update_price<'info>(
    oracle_state: &AccountInfo<'info>,
    price_feed: &AccountInfo<'info>,
    payer: &AccountInfo<'info>,
    admin: &AccountInfo<'info>,
    system_program: &AccountInfo<'info>,
    oracle_program: &AccountInfo<'info>,
    feed_id: [u8; 32],
    valid_time_stamp: u128,
    observe_time_stamp: u128,
    native_fee: u128,
    apro_token_fee: u128,
    expire_at: u128,
    benchmark_price: u128,
    ask_price: u128,
    bid_price: u128,
    config_digest: [u8; 32],
    epoch_and_round: u128,
    extra_hash: [u8; 32],
    signatures: Vec<[u8; 64]>,
    recovery_ids: Vec<u8>,
) -> Result<()> {
    let ix = Instruction {
        program_id: *oracle_program.key,
        accounts: vec![
            AccountMeta::new_readonly(*oracle_state.key, false),
            AccountMeta::new(*price_feed.key, false),
            AccountMeta::new(*payer.key, true),
            AccountMeta::new(*admin.key, false),
            AccountMeta::new_readonly(*system_program.key, false),
        ],
        data: UpdatePriceArgs {
            feed_id,
            valid_time_stamp,
            observe_time_stamp,
            native_fee,
            apro_token_fee,
            expire_at,
            benchmark_price,
            ask_price,
            bid_price,
            config_digest,
            epoch_and_round,
            extra_hash,
            signatures,
            recovery_ids,
        }
        .data(),
    };

    invoke(
        &ix,
        &[
            oracle_state.clone(),
            price_feed.clone(),
            payer.clone(),
            admin.clone(),
            system_program.clone(),
            oracle_program.clone(),
        ],
    )?;

    Ok(())
}

#[derive(AnchorDeserialize, AnchorSerialize, Clone, Debug)]
pub struct PriceFeed {
    pub feed_id: [u8; 32],
    pub valid_time_stamp: u128,
    pub observe_time_stamp: u128,
    pub native_fee: u128,
    pub apro_token_fee: u128,
    pub expire_at: u128,
    pub benchmark_price: u128,
    pub ask_price: u128,
    pub bid_price: u128,
    pub config_digest: [u8; 32],
    pub epoch_and_round: u128,
    pub extra_hash: [u8; 32],
}

#[derive(AnchorSerialize, AnchorDeserialize)]
struct UpdatePriceArgs {
    feed_id: [u8; 32],
    valid_time_stamp: u128,
    observe_time_stamp: u128,
    native_fee: u128,
    apro_token_fee: u128,
    expire_at: u128,
    benchmark_price: u128,
    ask_price: u128,
    bid_price: u128,
    config_digest: [u8; 32],
    epoch_and_round: u128,
    extra_hash: [u8; 32],
    signatures: Vec<[u8; 64]>,
    recovery_ids: Vec<u8>,
}

impl UpdatePriceArgs {
    fn data(&self) -> Vec<u8> {
        let mut data = Vec::new();
        let preimage = "global:update_price".as_bytes();
        let hash = hash(preimage);
        let discriminator = &hash.to_bytes()[..8];
        data.extend_from_slice(discriminator);
        data.extend_from_slice(&AnchorSerialize::try_to_vec(self).unwrap());

        data
    }
}

Clients code:

use anchor_lang::prelude::*;
use oracle_sdk::{load_price_feed_from_account_info, update_price};

declare_id!("GzWu85MdbZtVBDcC4Xrmp1dWix7Qo52nUAkD2FjraJ6f");//modify by solana address -k

#[program]
pub mod oracle_client_example {
    use super::*;

    pub fn fetch_price(ctx: Context<FetchPrice>) -> Result<()> {
        //fetch price feed from oracle
        let price_feed = load_price_feed_from_account_info(&ctx.accounts.price_account)?;

        msg!("Price Feed Details:");
        msg!("Feed ID: {:?}", price_feed.feed_id);
        msg!("Valid Timestamp: {}", price_feed.valid_time_stamp);
        msg!("Observe Timestamp: {}", price_feed.observe_time_stamp);
        msg!("Benchmark Price: {}", price_feed.benchmark_price);
        msg!("Ask Price: {}", price_feed.ask_price);
        msg!("Bid Price: {}", price_feed.bid_price);

        let current_timestamp = Clock::get()?.unix_timestamp as u128;
        let staleness_threshold = 3600u128;

        //store the price in the price_result account
        let price_result = if current_timestamp - price_feed.valid_time_stamp <= staleness_threshold
        {
            PriceResult {
                price: price_feed.benchmark_price,
                is_valid: true,
            }
        } else {
            PriceResult {
                price: 0,
                is_valid: false,
            }
        };

        ctx.accounts.price_result.set_inner(price_result);

        Ok(())
    }

    pub fn update_oracle_price(
        ctx: Context<UpdateOraclePrice>,
        feed_id: [u8; 32],
        valid_time_stamp: u128,
        observe_time_stamp: u128,
        native_fee: u128,
        apro_token_fee: u128,
        expire_at: u128,
        benchmark_price: u128,
        ask_price: u128,
        bid_price: u128,
        config_digest: [u8; 32],
        epoch_and_round: u128,
        extra_hash: [u8; 32],
        signatures: Vec<[u8; 64]>,
        recovery_ids: Vec<u8>,
    ) -> Result<()> {
        //update the price feed through CPI
        update_price(
            &ctx.accounts.oracle_state.to_account_info(),
            &ctx.accounts.price_feed.to_account_info(),
            &ctx.accounts.payer.to_account_info(),
            &ctx.accounts.admin.to_account_info(),
            &ctx.accounts.system_program.to_account_info(),
            &ctx.accounts.oracle_program.to_account_info(),
            feed_id,
            valid_time_stamp,
            observe_time_stamp,
            native_fee,
            apro_token_fee,
            expire_at,
            benchmark_price,
            ask_price,
            bid_price,
            config_digest,
            epoch_and_round,
            extra_hash,
            signatures,
            recovery_ids,
        )?;
        Ok(())
    }
}

#[derive(Accounts)]
pub struct FetchPrice<'info> {
    #[account(mut)]
    pub payer: Signer<'info>,
    /// CHECK: This account is owned by the Oracle program
    pub price_account: UncheckedAccount<'info>,
    #[account(
        init_if_needed,
        payer = payer,
        space = 8 + 16 + 1, // discriminator + price (u128) + is_valid
        seeds = [b"price_result", price_account.key().as_ref()],
        bump
    )]
    pub price_result: Account<'info, PriceResult>,
    pub system_program: Program<'info, System>,
}

#[derive(Accounts)]
pub struct UpdateOraclePrice<'info> {
    /// CHECK: This account is verified in the update_price function
    pub oracle_state: UncheckedAccount<'info>,
    /// CHECK: This account is verified in the update_price function
    #[account(mut)]
    pub price_feed: UncheckedAccount<'info>,
    #[account(mut)]
    pub payer: Signer<'info>,
    /// CHECK: This account is verified in the update_price function
    #[account(mut)]
    pub admin: UncheckedAccount<'info>,
    pub system_program: Program<'info, System>,
    /// CHECK: This account is verified in the update_price function
    pub oracle_program: UncheckedAccount<'info>,
}

#[account]
pub struct PriceResult {
    pub price: u128,
    pub is_valid: bool,
}

#[error_code]
pub enum ErrorCode {
    #[msg("Invalid account data length")]
    InvalidAccountDataLength,
}