# Developer Discussion **URL:** https://community.fireblocks.com/c/discuss/4.md?page=3 [Latest](https://community.fireblocks.com/latest.md) · [Categories](https://community.fireblocks.com/categories.md) · [Tags](https://community.fireblocks.com/tags.md) **Page:** 4 --- ## [Does signMessage follow RFC 6979 to make signature deterministic for FireblocksWeb3Provider?](https://community.fireblocks.com/t/does-signmessage-follow-rfc-6979-to-make-signature-deterministic-for-fireblocksweb3provider/2431)
**Author:** [@peter](https://community.fireblocks.com/u/peter)\ **Replies:** 1\ **Last updated:** [May 7, 2025, 3:31pm UTC](https://community.fireblocks.com/t/does-signmessage-follow-rfc-6979-to-make-signature-deterministic-for-fireblocksweb3provider/2431 "2025-05-07T15:31:13Z")
Want to use the FireblocksWeb3Provider to signMessage, is the signature deterministic? --- ## [About /v1/staking/positions](https://community.fireblocks.com/t/about-v1-staking-positions/2415)
**Author:** [@fgdfgsdft34](https://community.fireblocks.com/u/fgdfgsdft34)\ **Replies:** 0\ **Last updated:** [April 30, 2025, 6:12pm UTC](https://community.fireblocks.com/t/about-v1-staking-positions/2415 "2025-04-30T18:12:48Z")
amount is the amount deposited for staking plus the rewardAmount? or just the amount deposited? on docs List staking positions details say that amount and rewards are disjuncts, but In the image below it appears that in… --- ## [Issue with Custom Token Fee Estimation and Price Feed](https://community.fireblocks.com/t/issue-with-custom-token-fee-estimation-and-price-feed/2405)
**Author:** [@shubhamsharma0040](https://community.fireblocks.com/u/shubhamsharma0040)\ **Replies:** 11\ **Last updated:** [April 29, 2025, 12:19pm UTC](https://community.fireblocks.com/t/issue-with-custom-token-fee-estimation-and-price-feed/2405 "2025-04-29T12:19:53Z")
Hi all I’ve whitelisted a custom token, but I’m encountering issues with fee estimation and withdrawals for this token. Interestingly, this issue doesn’t occur with other tokens I’ve whitelisted, such as a custom USDT t… --- ## [AxiosError: Request failed with status code 401](https://community.fireblocks.com/t/axioserror-request-failed-with-status-code-401/2396)
**Author:** [@pemaju02](https://community.fireblocks.com/u/pemaju02)\ **Replies:** 6\ **Last updated:** [April 29, 2025, 6:30am UTC](https://community.fireblocks.com/t/axioserror-request-failed-with-status-code-401/2396 "2025-04-29T06:30:25Z")
Now we have using this code, but can’t able to access the supported assets. Instead of getting error like AxiosError: Request failed with status code 401 const apiSecret = fs.readFileSync(path.resolve(\_\_dirname, “../… --- ## [Message: 'Unauthorized: Token was not accepted.',](https://community.fireblocks.com/t/message-unauthorized-token-was-not-accepted/2387)
**Author:** [@rishi33785](https://community.fireblocks.com/u/rishi33785)\ **Replies:** 1\ **Last updated:** [April 29, 2025, 2:00am UTC](https://community.fireblocks.com/t/message-unauthorized-token-was-not-accepted/2387 "2025-04-29T02:00:52Z")
code async createApiUser(){ const projectRoot = join(\_\_dirname, ‘..’); const secretKeyPath = join(projectRoot, ‘src’, ‘fireblocks\_secret.key’); try { const data = await this.fireblocks.apiUser.createApiUser({ creat… --- ## [Creating addresses for the provided asset is not supported](https://community.fireblocks.com/t/creating-addresses-for-the-provided-asset-is-not-supported/2400)
**Author:** [@Osiz](https://community.fireblocks.com/u/Osiz)\ **Replies:** 0\ **Last updated:** [April 28, 2025, 5:34am UTC](https://community.fireblocks.com/t/creating-addresses-for-the-provided-asset-is-not-supported/2400 "2025-04-28T05:34:04Z")
I am currently working with a Fireblocks sandbox account that includes multiple networks such as BTC\_TEST and XRP\_TEST, both of which are functioning properly and displaying updated balances, Transfers. However, I am enc… --- ## [Lacking permissions](https://community.fireblocks.com/t/lacking-permissions/2386)
**Author:** [@rishi33785](https://community.fireblocks.com/u/rishi33785)\ **Replies:** 1\ **Last updated:** [April 25, 2025, 8:21am UTC](https://community.fireblocks.com/t/lacking-permissions/2386 "2025-04-25T08:21:02Z")
My Logs message: ‘Lacking permissions’, staus: 403 my code async getApiUser(){ try{ const data = await this.fireblocks.apiUser.getApiUsers() console.log(“api users”,JSON.stringify(data,null,2)) }catch(err){ cons… --- ## [How can I get Ethereum public key?](https://community.fireblocks.com/t/how-can-i-get-ethereum-public-key/2379)
**Author:** [@lmorais](https://community.fireblocks.com/u/lmorais)\ **Replies:** 1\ **Last updated:** [April 23, 2025, 6:48am UTC](https://community.fireblocks.com/t/how-can-i-get-ethereum-public-key/2379 "2025-04-23T06:48:49Z")
I’m trying to retrieve the public key for an asset (Ethereum) on a specific Vault and I saw this endpoint here: How can I use it for Ethereum, it requires BIP-44 information which is bitcoin exclusive. Is it safe to j… --- ## [Help: How can I use @fireblocks/embedded-wallet-sdk (npm) package?](https://community.fireblocks.com/t/help-how-can-i-use-fireblocks-embedded-wallet-sdk-npm-package/2358)
**Author:** [@juan.batty](https://community.fireblocks.com/u/juan.batty)\ **Replies:** 1\ **Last updated:** [April 17, 2025, 3:37am UTC](https://community.fireblocks.com/t/help-how-can-i-use-fireblocks-embedded-wallet-sdk-npm-package/2358 "2025-04-17T03:37:55Z")
Hi everyone, I hope that all ok. I’m adding this post because I need your help to configure and know how can I get this working and test all related with embedded wallets using the sdk import { EmbeddedWallet } from '@… --- ## [Signature Verification Fails - No Supported Key Formats Exception (.NET Integration)](https://community.fireblocks.com/t/signature-verification-fails-no-supported-key-formats-exception-net-integration/2365)
**Author:** [@osdeniz](https://community.fireblocks.com/u/osdeniz)\ **Replies:** 1\ **Last updated:** [April 16, 2025, 8:48am UTC](https://community.fireblocks.com/t/signature-verification-fails-no-supported-key-formats-exception-net-integration/2365 "2025-04-16T08:48:15Z")
Issue Summary: I’m trying to verify the Fireblocks webhook signature in a .NET (C#) application using the public key provided in the production environment. However, I encounter the following error when using rsa.Import… --- ## [IMX Token on Immutable zkEVM – Testnet Support?](https://community.fireblocks.com/t/imx-token-on-immutable-zkevm-testnet-support/2356)
**Author:** [@bao](https://community.fireblocks.com/u/bao)\ **Replies:** 2\ **Last updated:** [April 10, 2025, 9:31am UTC](https://community.fireblocks.com/t/imx-token-on-immutable-zkevm-testnet-support/2356 "2025-04-10T09:31:55Z")
Hi all, I’m trying to set up a vault to send the IMX token on Immutable zkEVM. According to Fireblocks’ supported tokens list, IMX is supported on ImmutableZk. However, when I create a sandbox environment, I can’t find… --- ## [We received an IP address sent from fireblocks but it is not on your list](https://community.fireblocks.com/t/we-received-an-ip-address-sent-from-fireblocks-but-it-is-not-on-your-list/2350)
**Author:** [@stevephamhi](https://community.fireblocks.com/u/stevephamhi)\ **Replies:** 1\ **Last updated:** [April 4, 2025, 9:58pm UTC](https://community.fireblocks.com/t/we-received-an-ip-address-sent-from-fireblocks-but-it-is-not-on-your-list/2350 "2025-04-04T21:58:08Z")
We testing on Testnet env and received an IP 3.80.255.216, but its not in your IP to whitelist, can you review and give me a list of IP addresses used by sandbox, testnet and PROD https://support.fireblocks.io/hc/en-us/… --- ## [We encountered an issue when trying to create multiple reserved vaults with the same name ex: PLAYER\_local\_reserved](https://community.fireblocks.com/t/we-encountered-an-issue-when-trying-to-create-multiple-reserved-vaults-with-the-same-name-ex-player-local-reserved/2344)
**Author:** [@stevephamhi](https://community.fireblocks.com/u/stevephamhi)\ **Replies:** 1\ **Last updated:** [April 2, 2025, 6:15am UTC](https://community.fireblocks.com/t/we-encountered-an-issue-when-trying-to-create-multiple-reserved-vaults-with-the-same-name-ex-player-local-reserved/2344 "2025-04-02T06:15:04Z")
Got the response error bellow, am i missing some config somewhere? { “message”: “An existing vault account by the same name already exists” “code”: 9004 } --- ## [Get\_vault\_assets throws exception](https://community.fireblocks.com/t/get-vault-assets-throws-exception/2254)
**Author:** [@Jasper](https://community.fireblocks.com/u/Jasper)\ **Replies:** 2\ **Last updated:** [March 28, 2025, 2:59pm UTC](https://community.fireblocks.com/t/get-vault-assets-throws-exception/2254 "2025-03-28T14:59:28Z")
Calling get\_vault\_assets from the Fireblocks Python SDK throws a validation error: Python311\\Lib\\site-packages\\fireblocks\\api\_client.py:325: UserWarning: Failed to deserialize response of type List\[VaultAsset\]: 4 valida… --- ## [API invocation returns { "message": "invalid algorithm", "code": -1}](https://community.fireblocks.com/t/api-invocation-returns-message-invalid-algorithm-code-1/2327)
**Author:** [@fblbg25](https://community.fireblocks.com/u/fblbg25)\ **Replies:** 1\ **Last updated:** [March 25, 2025, 2:29pm UTC](https://community.fireblocks.com/t/api-invocation-returns-message-invalid-algorithm-code-1/2327 "2025-03-25T14:29:23Z")
Hi, I am trying to setup postman to invoke sandbox api but I am getting { “message”: “invalid algorithm”, “code”: -1} I am using postman and have configured “JWT Bearer” auth type with following details, { "X-API-K… --- ## [NCW Disaster Recovery Process](https://community.fireblocks.com/t/ncw-disaster-recovery-process/2165)
**Author:** [@patrice](https://community.fireblocks.com/u/patrice)\ **Replies:** 8\ **Last updated:** [March 25, 2025, 9:06am UTC](https://community.fireblocks.com/t/ncw-disaster-recovery-process/2165 "2025-03-25T09:06:25Z")
I’m testing the Fireblocks Recovery Tool process, and I’ve successfully retrieved Key Share #1 using the Recovery Tool: { "bfc51292-xxxx": { "chaincode": "xxxxx", "shares": \[ { … --- ## [How to deploy a Solana contract by the FB SDK?](https://community.fireblocks.com/t/how-to-deploy-a-solana-contract-by-the-fb-sdk/2325)
**Author:** [@kingkong](https://community.fireblocks.com/u/kingkong)\ **Replies:** 1\ **Last updated:** [March 25, 2025, 2:38am UTC](https://community.fireblocks.com/t/how-to-deploy-a-solana-contract-by-the-fb-sdk/2325 "2025-03-25T02:38:08Z")
Hi，I wrote a code to deploy a Solana contract using the solana-web3-adapter code you provided, but it keeps throwing an error: Error: Failed to initialize Fireblocks client: Failed to set account: No wallet address foun… --- ## [How to Enable USDT (TRC-20, ERC-20) in Fireblocks Sandbox?](https://community.fireblocks.com/t/how-to-enable-usdt-trc-20-erc-20-in-fireblocks-sandbox/2309)
**Author:** [@LeeSeungsoo](https://community.fireblocks.com/u/LeeSeungsoo)\ **Replies:** 3\ **Last updated:** [March 22, 2025, 4:41pm UTC](https://community.fireblocks.com/t/how-to-enable-usdt-trc-20-erc-20-in-fireblocks-sandbox/2309 "2025-03-22T16:41:41Z")
Hello Fireblocks Team, I am currently testing in the Fireblocks Sandbox environment and need to enable USDT on both TRC-20 (Tron) and ERC-20 (Ethereum) networks. However, when I try to create a new wallet, I only see te… --- ## [How to get some amounts in my sandbox env?](https://community.fireblocks.com/t/how-to-get-some-amounts-in-my-sandbox-env/2314)
**Author:** [@ronikiko](https://community.fireblocks.com/u/ronikiko)\ **Replies:** 1\ **Last updated:** [March 19, 2025, 5:42pm UTC](https://community.fireblocks.com/t/how-to-get-some-amounts-in-my-sandbox-env/2314 "2025-03-19T17:42:57Z")
i need some amounts to test the api. --- ## [Unauthorized: Error getting User certificate](https://community.fireblocks.com/t/unauthorized-error-getting-user-certificate/2313)
**Author:** [@ronikiko](https://community.fireblocks.com/u/ronikiko)\ **Replies:** 4\ **Last updated:** [March 19, 2025, 5:11pm UTC](https://community.fireblocks.com/t/unauthorized-error-getting-user-certificate/2313 "2025-03-19T17:11:47Z")
How to solve this error in sandbox env? message: ‘Unauthorized: Error getting User certificate’, code: -7 --- ## [Kadena Support For Fireblocks Wallets](https://community.fireblocks.com/t/kadena-support-for-fireblocks-wallets/2304)
**Author:** [@PMJ](https://community.fireblocks.com/u/PMJ)\ **Replies:** 3\ **Last updated:** [March 19, 2025, 5:09pm UTC](https://community.fireblocks.com/t/kadena-support-for-fireblocks-wallets/2304 "2025-03-19T17:09:28Z")
Hi All, I got a project to create a digital asset management system. Some of the assets will be in Kadena blockchain. I didn’t find a way to add Kadena wallets in fireblocks. Would like to know if there is a way to add … --- ## [NFT Transfer is Blocked by policy (TAP)](https://community.fireblocks.com/t/nft-transfer-is-blocked-by-policy-tap/2316)
**Author:** [@ElvinasB](https://community.fireblocks.com/u/ElvinasB)\ **Replies:** 0\ **Last updated:** [March 19, 2025, 3:51pm UTC](https://community.fireblocks.com/t/nft-transfer-is-blocked-by-policy-tap/2316 "2025-03-19T15:51:15Z")
Hello, is it possible to change TAP settings in Sandbox? We are unable to transfer NFT to another destination. --- ## [How to change the triggering vault in the Ethers Provider](https://community.fireblocks.com/t/how-to-change-the-triggering-vault-in-the-ethers-provider/2283)
**Author:** [@rocio](https://community.fireblocks.com/u/rocio)\ **Replies:** 5\ **Last updated:** [March 18, 2025, 6:25pm UTC](https://community.fireblocks.com/t/how-to-change-the-triggering-vault-in-the-ethers-provider/2283 "2025-03-18T18:25:40Z")
This is how we are initializing the provider now: The idea is to have every token contract owner in the vaultAccountIds list. But how can I then choose the correct owner of the contract when using them so that I don… --- ## [User Api Key Approval](https://community.fireblocks.com/t/user-api-key-approval/2311)
**Author:** [@Uma](https://community.fireblocks.com/u/Uma)\ **Replies:** 1\ **Last updated:** [March 18, 2025, 1:53pm UTC](https://community.fireblocks.com/t/user-api-key-approval/2311 "2025-03-18T13:53:17Z")
Even after using whitelisted static IP address i am getting unauthorized error 500. i wanna know how to get approval for for user API key and who can approve it ? --- ## [End-User Transaction Approval Process in Fireblocks NCW Implementation](https://community.fireblocks.com/t/end-user-transaction-approval-process-in-fireblocks-ncw-implementation/2268)
**Author:** [@xls](https://community.fireblocks.com/u/xls)\ **Replies:** 1\ **Last updated:** [March 15, 2025, 12:52am UTC](https://community.fireblocks.com/t/end-user-transaction-approval-process-in-fireblocks-ncw-implementation/2268 "2025-03-15T00:52:01Z")
Hi Fireblocks Team, I am currently implementing Fireblocks’ Non-Custodial Wallet (NCW) solution for our application and have questions regarding the Transaction Authorization Policy (TAP) as it relates to end-user appro… --- ## [On ramp/off ramp application](https://community.fireblocks.com/t/on-ramp-off-ramp-application/2234)
**Author:** [@ddzervus](https://community.fireblocks.com/u/ddzervus)\ **Replies:** 5\ **Last updated:** [March 14, 2025, 5:37pm UTC](https://community.fireblocks.com/t/on-ramp-off-ramp-application/2234 "2025-03-14T17:37:09Z")
Hello, I am planing to make on ramp/off ramp application. Main idea is that client collects crypto to his account later he can exchange or withdraw in another currency fiat or crypto. Correct me if I am wrong. I need… --- ## [TAP: is it possible to export/import?](https://community.fireblocks.com/t/tap-is-it-possible-to-export-import/2294)
**Author:** [@ric\_ramos79](https://community.fireblocks.com/u/ric_ramos79)\ **Replies:** 1\ **Last updated:** [March 14, 2025, 2:06pm UTC](https://community.fireblocks.com/t/tap-is-it-possible-to-export-import/2294 "2025-03-14T14:06:33Z")
“Is it possible to export or import TAP rules? It can be done via the Fireblocks console or via API calls.” --- ## [How to retrieve Fireblocks txId & External Id for Fireblocks JSON RPC server](https://community.fireblocks.com/t/how-to-retrieve-fireblocks-txid-external-id-for-fireblocks-json-rpc-server/2116)
**Author:** [@nithish\_aarya](https://community.fireblocks.com/u/nithish_aarya)\ **Replies:** 2\ **Last updated:** [March 11, 2025, 7:28am UTC](https://community.fireblocks.com/t/how-to-retrieve-fireblocks-txid-external-id-for-fireblocks-json-rpc-server/2116 "2025-03-11T07:28:41Z")
For my web3 application, I am using Fireblocks JSON Rpc Server ethers.js package for interacting with the smart contracts. But I want to track the exact status of the transaction as it progresses just like what we see in… --- ## [Is it possible search External Wallets by Name ?!?](https://community.fireblocks.com/t/is-it-possible-search-external-wallets-by-name/2259)
**Author:** [@IKE](https://community.fireblocks.com/u/IKE)\ **Replies:** 3\ **Last updated:** [March 3, 2025, 9:05am UTC](https://community.fireblocks.com/t/is-it-possible-search-external-wallets-by-name/2259 "2025-03-03T09:05:38Z")
Would be possible to implement a query param to search the WalletId by name in the “List External Wallets” api !?? --- ## [How to use the Gas Station in the Sandbox or Testnet Environment ?!](https://community.fireblocks.com/t/how-to-use-the-gas-station-in-the-sandbox-or-testnet-environment/2255)
**Author:** [@IKE](https://community.fireblocks.com/u/IKE)\ **Replies:** 1\ **Last updated:** [February 27, 2025, 5:05am UTC](https://community.fireblocks.com/t/how-to-use-the-gas-station-in-the-sandbox-or-testnet-environment/2255 "2025-02-27T05:05:52Z")
I am trying to run some tests using the Gas Station and the Auto fuel feature but is not using the Gas that I have allocated at the Gas Station Wallet. [Previous page](https://community.fireblocks.com/c/discuss/4.md?page=2) [Next page](https://community.fireblocks.com/c/discuss/4.md?page=4)