Prepare a new tokenization
curl --request POST \
--url https://api.sandbox.brickken.com/prepare-transactions \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '
{
"method": "newTokenization",
"chainId": "aa36a7",
"signerAddress": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"tokenizerEmail": "tokenizer@example.com",
"name": "Example Token",
"tokenSymbol": "EXMPL",
"tokenType": "EQUITY",
"supplyCap": "1000000",
"url": "https://example.com/token-docs",
"preMints": [
{
"amount": "1000"
}
],
"initialHolders": [
{
"walletAddress": "0x1111111111111111111111111111111111111111"
}
]
}
'import requests
url = "https://api.sandbox.brickken.com/prepare-transactions"
payload = {
"method": "newTokenization",
"chainId": "aa36a7",
"signerAddress": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"tokenizerEmail": "tokenizer@example.com",
"name": "Example Token",
"tokenSymbol": "EXMPL",
"tokenType": "EQUITY",
"supplyCap": "1000000",
"url": "https://example.com/token-docs",
"preMints": [{ "amount": "1000" }],
"initialHolders": [{ "walletAddress": "0x1111111111111111111111111111111111111111" }]
}
headers = {
"x-api-key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
method: 'newTokenization',
chainId: 'aa36a7',
signerAddress: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
tokenizerEmail: 'tokenizer@example.com',
name: 'Example Token',
tokenSymbol: 'EXMPL',
tokenType: 'EQUITY',
supplyCap: '1000000',
url: 'https://example.com/token-docs',
preMints: [{amount: '1000'}],
initialHolders: [{walletAddress: '0x1111111111111111111111111111111111111111'}]
})
};
fetch('https://api.sandbox.brickken.com/prepare-transactions', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.sandbox.brickken.com/prepare-transactions",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'method' => 'newTokenization',
'chainId' => 'aa36a7',
'signerAddress' => '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
'tokenizerEmail' => 'tokenizer@example.com',
'name' => 'Example Token',
'tokenSymbol' => 'EXMPL',
'tokenType' => 'EQUITY',
'supplyCap' => '1000000',
'url' => 'https://example.com/token-docs',
'preMints' => [
[
'amount' => '1000'
]
],
'initialHolders' => [
[
'walletAddress' => '0x1111111111111111111111111111111111111111'
]
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.sandbox.brickken.com/prepare-transactions"
payload := strings.NewReader("{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.sandbox.brickken.com/prepare-transactions")
.header("x-api-key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.brickken.com/prepare-transactions")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"transactions": [
{
"from": "0x1234567890abcdef1234567890abcdef12345678",
"to": "0xabcdef1234567890abcdef1234567890abcdef12",
"value": "0x00",
"nonce": 3792,
"chainId": 11155111,
"data": "0xd362e8a70000000000000000000000000000000000000000000000000000000000000040...",
"type": 2,
"maxPriorityFeePerGas": "1150000",
"maxFeePerGas": "1156037",
"gasLimit": "0xccef"
}
],
"txId": "0x46adea7bdf49c576a760102e0d6bc9ecd650b3998588cd3d7f576a7973426aad",
"info": {
"tokenizerEmail": "tokenizer@example.com",
"tokenSymbol": "EXMPL",
"investorEmail": "investor@example.com"
}
}Prepare Transactions
newTokenization
Prepares the unsigned transactions that deploy a new tokenized asset.
POST
/
prepare-transactions
Prepare a new tokenization
curl --request POST \
--url https://api.sandbox.brickken.com/prepare-transactions \
--header 'Content-Type: application/json' \
--header 'x-api-key: <api-key>' \
--data '
{
"method": "newTokenization",
"chainId": "aa36a7",
"signerAddress": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"tokenizerEmail": "tokenizer@example.com",
"name": "Example Token",
"tokenSymbol": "EXMPL",
"tokenType": "EQUITY",
"supplyCap": "1000000",
"url": "https://example.com/token-docs",
"preMints": [
{
"amount": "1000"
}
],
"initialHolders": [
{
"walletAddress": "0x1111111111111111111111111111111111111111"
}
]
}
'import requests
url = "https://api.sandbox.brickken.com/prepare-transactions"
payload = {
"method": "newTokenization",
"chainId": "aa36a7",
"signerAddress": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
"tokenizerEmail": "tokenizer@example.com",
"name": "Example Token",
"tokenSymbol": "EXMPL",
"tokenType": "EQUITY",
"supplyCap": "1000000",
"url": "https://example.com/token-docs",
"preMints": [{ "amount": "1000" }],
"initialHolders": [{ "walletAddress": "0x1111111111111111111111111111111111111111" }]
}
headers = {
"x-api-key": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
method: 'newTokenization',
chainId: 'aa36a7',
signerAddress: '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
tokenizerEmail: 'tokenizer@example.com',
name: 'Example Token',
tokenSymbol: 'EXMPL',
tokenType: 'EQUITY',
supplyCap: '1000000',
url: 'https://example.com/token-docs',
preMints: [{amount: '1000'}],
initialHolders: [{walletAddress: '0x1111111111111111111111111111111111111111'}]
})
};
fetch('https://api.sandbox.brickken.com/prepare-transactions', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.sandbox.brickken.com/prepare-transactions",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'method' => 'newTokenization',
'chainId' => 'aa36a7',
'signerAddress' => '0x742d35Cc6634C0532925a3b844Bc454e4438f44e',
'tokenizerEmail' => 'tokenizer@example.com',
'name' => 'Example Token',
'tokenSymbol' => 'EXMPL',
'tokenType' => 'EQUITY',
'supplyCap' => '1000000',
'url' => 'https://example.com/token-docs',
'preMints' => [
[
'amount' => '1000'
]
],
'initialHolders' => [
[
'walletAddress' => '0x1111111111111111111111111111111111111111'
]
]
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.sandbox.brickken.com/prepare-transactions"
payload := strings.NewReader("{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("x-api-key", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.sandbox.brickken.com/prepare-transactions")
.header("x-api-key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.brickken.com/prepare-transactions")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"method\": \"newTokenization\",\n \"chainId\": \"aa36a7\",\n \"signerAddress\": \"0x742d35Cc6634C0532925a3b844Bc454e4438f44e\",\n \"tokenizerEmail\": \"tokenizer@example.com\",\n \"name\": \"Example Token\",\n \"tokenSymbol\": \"EXMPL\",\n \"tokenType\": \"EQUITY\",\n \"supplyCap\": \"1000000\",\n \"url\": \"https://example.com/token-docs\",\n \"preMints\": [\n {\n \"amount\": \"1000\"\n }\n ],\n \"initialHolders\": [\n {\n \"walletAddress\": \"0x1111111111111111111111111111111111111111\"\n }\n ]\n}"
response = http.request(request)
puts response.read_body{
"transactions": [
{
"from": "0x1234567890abcdef1234567890abcdef12345678",
"to": "0xabcdef1234567890abcdef1234567890abcdef12",
"value": "0x00",
"nonce": 3792,
"chainId": 11155111,
"data": "0xd362e8a70000000000000000000000000000000000000000000000000000000000000040...",
"type": 2,
"maxPriorityFeePerGas": "1150000",
"maxFeePerGas": "1156037",
"gasLimit": "0xccef"
}
],
"txId": "0x46adea7bdf49c576a760102e0d6bc9ecd650b3998588cd3d7f576a7973426aad",
"info": {
"tokenizerEmail": "tokenizer@example.com",
"tokenSymbol": "EXMPL",
"investorEmail": "investor@example.com"
}
}Prepares unsigned transactions for creating a new tokenized asset. Use
Full walkthrough: Tokenize an asset and run an STO.
POST /prepare-transactions with method=newTokenization.
Prerequisites
- The required asset-name field is
name.tokenNameis not accepted. - After sending, wait until the tokenization succeeds before using its symbol in
newSto,mintToken, orwhitelist. - Use
GET /get-token-infoto inspect the exact symbols available to the API key.
Next step
Preparing does not touch the chain. The response gives youtxId and an array of unsigned transactions — you still have to sign and submit them.
1
Sign every returned transaction
Sign each entry locally with the wallet that sends the transaction —
signerAddress, or investorAddress for newInvest and claimTokens. It must be whitelisted by Brickken, and it needs native gas on the target chain.2
Submit the signed payloads
POST them to /send-transactions as { txId, signedTransactions } and Brickken broadcasts for you.If you would rather broadcast yourself, prepare with executionMode: "client-broadcast" and confirm afterwards with { txId, txHash } instead.3
Poll until it confirms
Call
GET /get-transaction-status with the txId. A pending status means it is broadcast but not yet mined — do not resubmit.Authorizations
Body
application/json
Required. Operation to prepare. Must be newTokenization for this endpoint.
Available options:
newTokenization Example:
"newTokenization"
Required. Blockchain network identifier. Hex format is recommended, for example Sepolia aa36a7.
Example:
"aa36a7"
Required. Wallet address that signs the deployment transactions. It must be whitelisted by Brickken and becomes the tokenizer of the new token.
Example:
"0x742d35Cc6634C0532925a3b844Bc454e4438f44e"
Required. Email of the tokenizer account. The account must exist and hold an active tokenization license.
Example:
"tokenizer@example.com"
Required. Name of the tokenized asset. Use name; tokenName is not supported.
Example:
"Example Token"
Required. Symbol of the new token. Must be 2 to 5 uppercase letters or numbers, and must not be already in use.
Example:
"EXMPL"
Optional. Token type. Defaults to EQUITY when omitted.
Available options:
EQUITY, DEBT, BILL_FACTORING, ICO, STABLECOIN, REVENUE_SHARE, RWA_TOKEN, PROFIT_SHARING Example:
"EQUITY"
Optional. Maximum token supply. Defaults to 0 when omitted.
Example:
"1000000"
Optional. Token documentation URL. Defaults to an empty string when omitted.
Example:
"https://example.com/token-docs"
Optional. Tokenizer wallet address used as the token issuer. If omitted, signerAddress is used.
Pattern:
^0x[a-fA-F0-9]{40}$Example:
"0x4444444444444444444444444444444444444444"
Optional. Payment token contract address for the new asset. If omitted, the chain default payment token is used.
Pattern:
^0x[a-fA-F0-9]{40}$Example:
"0x5555555555555555555555555555555555555555"
Optional. Pre-mint amounts. If provided, initialHolders must also be provided with the same length.
Show child attributes
Show child attributes
Example:
[{ "amount": "1000" }]
Optional. Initial holders paired by index with preMints. Provide walletAddress directly, or email when a DFNS wallet can be resolved.
Show child attributes
Show child attributes
Example:
[
{
"walletAddress": "0x1111111111111111111111111111111111111111"
}
]
Response
200 - application/json
Successful response
Array of unsigned transaction objects ready for signing
Show child attributes
Show child attributes
Unique identifier for this transaction batch (required for /send-transactions). This is NOT a blockchain transaction hash.
Example:
"0x46adea7bdf49c576a760102e0d6bc9ecd650b3998588cd3d7f576a7973426aad"
Metadata about the operation
Show child attributes
Show child attributes