Swap BTCB at the Best Rate

What is BTCB?

BTCB is an exchange-issued representation of bitcoin, not a bitcoin sidechain or a trustless bridge. Binance announced its bitcoin-pegged token on 17 June 2019, first as a BEP2 asset on the former BNB Beacon Chain, promising full backing by BTC held in reserve addresses published for anyone to audit. The BEP-20 version on BNB Smart Chain followed in September 2020, when the exchange opened deposits and withdrawals on the new network.

Only Binance can mint or burn it. The token belongs to the exchange's wider pegged-token program, and the bitcoin backing BTCB sits in reserve addresses that anyone can inspect on the Bitcoin blockchain.

How BTCB works

There is no public mint function. A user acquires BTCB by withdrawing bitcoin from a Binance account over the BNB Smart Chain network, and redeems by depositing BTCB back and withdrawing native BTC. Binance adjusts the token supply against these flows and lists the reserve addresses on its proof-of-collateral page, which also covers the smaller BEP2 and Ethereum versions of the token.

The published reserves are the whole backing story. Binance states the bitcoin sits in cold storage under its custody, and the proof-of-collateral page is updated periodically rather than in real time, so on-chain supply and reserve balances can briefly diverge while flows settle.

BTCB supply and tokenomics

Supply is elastic and uncapped: BTCB in circulation is whatever Binance has minted against customer bitcoin and not yet burned. There is no emission schedule, no allocation and no token sale; the quantity tracks demand for bitcoin liquidity on BNB Chain rather than any distribution plan.

How BTCB is governed

There is no token-holder governance and no DAO. The verified contract is a standard BEP-20 with an owner-only mint function; it has no blacklist, freeze or pause functions, so Binance's control is exercised through issuance and custody of the reserves rather than through address-level intervention on the chain.

What people use BTCB for

BTCB exists so bitcoin can be used inside BNB Chain contracts, which native BTC cannot reach, and in practice it serves as the bitcoin leg wherever BNB Chain applications need one.

• Trade bitcoin exposure in pools such as BTCB paired with WBNB or stablecoins.
• Post BTCB as collateral in BNB Chain lending markets.
• Supply BTCB to BNB Chain yield vaults that accept it.
• Move BTC value between Binance and BNB Chain wallets without touching the Bitcoin network.

BTCB risks and considerations

BTCB concentrates custodial risk in one company. The bitcoin backing it is held by Binance, redemption runs through Binance accounts, and the proof-of-collateral page is self-published rather than independently audited. The issuer's regulatory history is part of that picture: in November 2023 Binance pleaded guilty to US anti-money-laundering and sanctions violations and agreed to pay 4.3 billion dollars, and its founder resigned as chief executive.

Naming is a separate hazard. BTCB on BNB Smart Chain at the address this page describes is the Binance-issued token; the BEP2 original and an Ethereum version exist under the same brand, and bridged copies on other networks are not backed by the same reserves. Other wrapped bitcoins such as WBTC are different products with different custodians.