Question 1

My deposit is not showing on the dashboard

Accepted Answer

This is usually a temporary indexing delay. Use the Deposit Finder to manually trigger indexing. Go to your Master Wallet → Overview → Click 'Deposit Finder' in the dashboard, or use the API endpoint POST /v1/wallets/{walletId}/rescan/blocks with the transactionHash.

Question 2

Why are my webhooks delayed or inconsistent?

Accepted Answer

Webhook delays can occur due to blockchain network congestion, temporary node indexing delays, or your webhook endpoint returning errors. Check webhook logs in Dashboard: Master Wallet → Developers → Webhook Logs.

Question 3

Why did my funds automatically move to the master wallet?

Accepted Answer

By default, auto-sweep is enabled (disableAutoSweep: false). When a deposit arrives at a child address, it automatically sweeps to your master wallet. To keep funds in child addresses, set disableAutoSweep: true when creating the address via API, or toggle 'Disable Auto Sweep' in the address settings on the dashboard.

Question 4

Can I set a threshold for auto-sweep?

Accepted Answer

Yes. You can configure sweep thresholds so funds only auto-sweep once a certain balance is reached.

Question 5

How do gas fees work on Blockradar?

Accepted Answer

Gas fees are paid directly to the blockchain in the native token: ETH for Ethereum/Base/Polygon, TRX for Tron, and SOL for Solana. Blockradar does not charge additional fees on top of network costs.

Question 6

Why are Tron fees higher than other chains?

Accepted Answer

Tron network fees are typically $1-6 per transaction due to how Tron handles bandwidth and energy. This is a blockchain-level cost. Lower-cost alternatives include Solana (~$0.01-0.30), Base (~$0.01-0.10), and Polygon (~$0.01-0.10).

Question 7

Can I pay gas fees in USDT or USDC instead of native tokens?

Accepted Answer

No, blockchain gas fees must be paid in the chain's native token. However, you can enable gasless withdrawals so your master wallet sponsors gas for child address transactions.

Question 8

How do I enable gasless withdrawals?

Accepted Answer

When gasless is enabled, the master wallet pays gas fees for child address withdrawals. Enable it at the master wallet level in Dashboard → Master Wallet Settings → Enable Gasless Transactions, or set enableGaslessWithdraw: true when creating/updating an address via API.

Question 9

Which wallet pays gas - master or child address?

Accepted Answer

It depends on the enableGaslessWithdraw setting. When enabled (true), the master wallet pays gas. When disabled (false, which is the default), the child address needs its own gas.

Question 10

What swaps are supported on Blockradar?

Accepted Answer

Blockradar supports stablecoin-to-stablecoin swaps only: USDT, USDC, DAI, BUSD, cUSD, cNGN, EURC, IDRX. Native token swaps (like USDT to TRX or USDC to ETH) are not supported.

Question 11

Can I do cross-chain swaps?

Accepted Answer

Yes. You can swap/bridge assets across different blockchains via dashboard or API. For cross-chain swaps via API, pass the destination master wallet's asset ID as the toAssetId.

Question 12

Do I need multiple master wallets for different chains?

Accepted Answer

For EVM chains (Ethereum, Base, Polygon, Arbitrum, Optimism, etc.), one wallet covers all of them. However, Tron (TRC20) and Solana each require their own separate master wallet.

Question 13

Can I delete addresses on Blockradar?

Accepted Answer

No, addresses cannot be deleted due to blockchain limitations. You can only deactivate them in the dashboard. Deactivated addresses won't receive new deposits or be monitored.

Question 14

How do I export private keys?

Accepted Answer

Use showPrivateKey: true parameter when fetching wallet/address details via API. Security warning: Only use this in secure, trusted environments.

Question 15

How do I withdraw from a child address to an external wallet?

Accepted Answer

Use the withdrawal API endpoint: POST /v1/wallets/{walletId}/addresses/{addressId}/withdraw. You can also enable gasless withdrawals so users don't need native tokens.

Question 16

My transaction is stuck on pending

Accepted Answer

Common causes include insufficient gas in the master wallet (if using gasless) or child address, queue processing (transactions process sequentially due to blockchain nonces), or temporary node issues. If stuck for more than 30 minutes, contact support with the transaction ID.

Question 17

How do I move funds between master wallet and child addresses?

Accepted Answer

All on-chain fund movements are withdrawals. There's no separate transfer endpoint. Use POST /v1/wallets/{walletId}/withdraw with child address as destination for master to child, or POST /v1/wallets/{walletId}/addresses/{addressId}/withdraw with master wallet address as destination for child to master.

Question 18

I sent funds to the wrong chain or an unsupported asset

Accepted Answer

Use Asset Recovery in the dashboard at dashboard.blockradar.co/asset-recovery. This is currently supported for master wallets only.

Question 19

I sent native tokens (ETH/TRX) - why don't they show up?

Accepted Answer

Blockradar only indexes stablecoins by design. Native token deposits (ETH, TRX, SOL, etc.) won't appear in the dashboard transaction history. However, the funds are still in your wallet and can be viewed on the blockchain explorer and withdrawn via API or dashboard.

Question 20

I sent mainnet funds to a testnet address - are my funds lost?

Accepted Answer

No, your funds are not lost. Mainnet and testnet are separate networks, but the addresses are cryptographically linked. You can recover funds using Asset Recovery at dashboard.blockradar.co/asset-recovery.

Question 21

How do I switch from testnet to mainnet?

Accepted Answer

In your dashboard, look at the environment toggle (usually top-right or in wallet settings), switch from Testnet to Live, create a new master wallet for mainnet, and update your API keys (testnet keys won't work on mainnet).

Question 22

Where can I get testnet tokens?

Accepted Answer

Use these faucets: Ethereum Sepolia at sepoliafaucet.com, BNB Chain at testnet.bnbchain.org/faucet-smart, Polygon Amoy at faucet.polygon.technology, Tron Nile at nileex.io, Solana at faucet.solana.com, and Circle USDC at faucet.circle.com.

Question 23

How do I set up Virtual Accounts for NGN deposits?

Accepted Answer

Virtual Accounts allow your users to deposit NGN (Nigerian Naira) which automatically converts to stablecoins on-chain. Requirements: Must be on mainnet/Live mode (not testnet) and must complete KYB verification.

Question 24

Virtual Accounts not showing in my dashboard

Accepted Answer

Virtual Accounts only appear if you're in Live mode (not testnet), your account has completed KYB verification, and the feature has been enabled for your account.

Question 25

What is cNGN?

Accepted Answer

cNGN is a Nigerian Naira-pegged stablecoin. Blockradar supports cNGN transactions and swaps with other stablecoins.

Question 26

How do users deposit fiat (NGN) and receive crypto?

Accepted Answer

Use Virtual Accounts for NGN: Generate a Virtual Account for the user, user deposits NGN via bank transfer, and funds automatically convert to stablecoins and appear on-chain.

Question 27

Do you support other fiat currencies besides NGN?

Accepted Answer

Currently, Virtual Accounts support NGN only. For other currencies, you would need to integrate with third-party fiat on-ramp providers.

Question 28

Does Blockradar support Bitcoin (BTC)?

Accepted Answer

No, Blockradar focuses on stablecoins only. Bitcoin is not supported.

Question 29

What blockchains does Blockradar support?

Accepted Answer

Blockradar supports Ethereum, BNB Chain, Polygon, Tron, Base, Arbitrum, Optimism, Solana, Celo, Lisk, Avalanche, Asset Chain, and Plasma. Additional networks can be integrated upon request.

Question 30

What stablecoins does Blockradar support?

Accepted Answer

Blockradar supports USDT, USDC, DAI, BUSD, cUSD, cNGN, EURC, and IDRX. Additional stablecoins can be integrated upon request.

Question 31

Can I pay my Blockradar subscription with stablecoins?

Accepted Answer

Yes. You can pay via the payment link sent to your email, or withdraw from your master wallet to the payment link address.

Question 32

Can I pay Blockradar by credit card?

Accepted Answer

Currently, Blockradar only supports stablecoin payments for subscriptions.

Question 33

What's the difference between wallet ID, address ID, and asset ID?

Accepted Answer

Wallet ID identifies your master wallet. Address ID identifies a specific child address within a wallet. Asset ID identifies a specific asset (USDT, USDC, etc.) within your wallet. Always use the wallet-specific asset ID from your wallet's asset list, not a general asset ID.