bulk-keychain

A simple high perf signing lib for BULK txns - Python bindings.

Installation

pip install bulk-keychain

Quick Start

from bulk_keychain import Keypair, Signer

# Generate a new keypair
keypair = Keypair()
print(f"Public key: {keypair.pubkey}")

# Or import from base58
# keypair = Keypair.from_base58("your-secret-key...")

# Create a signer
signer = Signer(keypair, "devnet")

# Sign a limit order
signed = signer.sign({
    "type": "order",
    "symbol": "BTC-USD",
    "is_buy": True,
    "price": 100000.0,
    "size": 0.1,
    "order_type": {"type": "limit", "tif": "GTC"}
})

# Submit to API
import requests
response = requests.post(
    "https://api.bulk.exchange/api/v1/order",
    json={
        "actions": signed["actions"],
        "nonce": signed["nonce"],
        "account": signed["account"],
        "signer": signed["signer"],
        "signature": signed["signature"],
    }
)

Order Types

Limit Order

{
    "type": "order",
    "symbol": "BTC-USD",
    "is_buy": True,
    "price": 100000.0,
    "size": 0.1,
    "order_type": {"type": "limit", "tif": "GTC"}  # GTC, IOC, or ALO
}

Market Order

{
    "type": "order",
    "symbol": "BTC-USD",
    "is_buy": True,
    "price": 0.0,
    "size": 0.1,
    "order_type": {"type": "market", "is_market": True, "trigger_px": 0.0}
}

Cancel Order

{
    "type": "cancel",
    "symbol": "BTC-USD",
    "order_id": "order-id-base58"
}

Cancel All Orders

{
    "type": "cancel_all",
    "symbols": ["BTC-USD"]  # or [] for all symbols
}

Builder Codes

Builder codes are optional builder-code fees for routed limit and market orders. Python order input uses builder_code; API JSON emits builderCode on orders and abc/rbc approval actions. When builder_code is absent, it contributes no signing bytes.

Batch Signing

For high-frequency trading, sign many transactions in parallel:

# Sign all at once - each order becomes one transaction
signed_txs = signer.sign_all(orders)

For multi-order atomic transactions, batch order_ids are optional:

signer.set_compute_batch_order_ids(True)  # default False for max performance
grouped = signer.sign_group([entry_order, stop_loss, take_profit])
print(grouped.get("order_ids"))

API Reference

Keypair

# Generate new keypair
keypair = Keypair()

# Import from base58
keypair = Keypair.from_base58("secret-key-base58")

# Import from bytes (32 or 64 bytes)
keypair = Keypair.from_bytes(bytes_data)

# Properties and methods
keypair.pubkey          # Public key as base58 string
keypair.to_base58()     # Full keypair as base58 (64 bytes)
keypair.to_bytes()      # Full keypair as bytes
keypair.secret_key()    # Secret key as bytes (32 bytes)

Signer

# Create signer
signer = Signer(keypair, "devnet")
signer = Signer.from_base58("secret-key-base58", "devnet")

# With nonce management 
signer = Signer.with_nonce_manager(keypair, "timestamp", "devnet")
signer = Signer.with_nonce_manager(keypair, "counter", "devnet")
signer = Signer.with_nonce_manager(keypair, "high_frequency", "devnet")

# Optional ID computation controls
signer.set_compute_order_id(True)            # default True
signer.set_compute_batch_order_ids(False)    # default False
signer.computes_order_id()
signer.computes_batch_order_ids()

# Sign operations
signed = signer.sign(order, nonce=None)
signed = signer.sign_group([order1, order2], nonce=None)
signed = signer.sign_faucet(nonce=None)
signed = signer.sign_agent_wallet(agent_pubkey, delete=False, nonce=None)
signed = signer.sign_user_settings(max_leverage=[("BTC-USD", 5.0)], nonce=None)
signed = signer.sign_oracle_prices([(1704067200000000000, "BTC-USD", 102500.0)], nonce=None)
signed = signer.sign_pyth_oracle([(1704067200000000000, 1, 10250000000000, -8)], nonce=None)
signed = signer.sign_whitelist_faucet(target_pubkey, whitelist=True, nonce=None)
signed = signer.sign_approve_builder_code(builder_pubkey, fee=5, nonce=None)
signed = signer.sign_revoke_builder_code(builder_pubkey, nonce=None)
signed_list = signer.sign_all(orders, base_nonce=None)

Tuple formats:

• sign_oracle_prices: (timestamp, asset, price)
• sign_pyth_oracle: (timestamp, feed_index, price, exponent)

Utilities

from bulk_keychain import random_hash, current_timestamp, validate_pubkey, validate_hash

# Generate random hash for client order IDs
client_id = random_hash()

# Get the current Unix timestamp in nanoseconds
ts = current_timestamp()

# Validate base58 strings
is_valid = validate_pubkey("pubkey-base58")
is_valid = validate_hash("hash-base58")

Compute order ID without a signer/private key:

from bulk_keychain import compute_order_id_from_order

order_id = compute_order_id_from_order(
    {"type": "order", "symbol": "BTC-USD", "is_buy": True, "price": 100000.0, "size": 0.1},
    nonce=1704067200000,
    account="your-account-pubkey",
)

# Compact API order JSON is also supported:
order_id_compact = compute_order_id_from_order(
    {"l": {"c": "BTC-USD", "b": True, "px": 100000.0, "sz": 0.1, "r": False, "tif": "GTC"}},
    nonce=1704067200000,
    account="your-account-pubkey",
)