{"id":"bitcoin-avalanche-bridged-btcb","version":1,"language":"en","title":"Bitcoin Avalanche Bridged (BTC.b)","hidden":false,"content":"**Bitcoin Avalanche Bridged (BTC.b)** is a representation of [Bitcoin](https://iq.wiki/wiki/bitcoin) on the [Avalanche Network](https://iq.wiki/wiki/avalanche), enabling the transfer of Bitcoin across multiple [blockchain](https://iq.wiki/wiki/blockchain) networks. BTC.b utilizes [LayerZero's](https://iq.wiki/wiki/layerzero) Omnichain Fungible Token (OFT) standard to address the challenges associated with cross-chain Bitcoin transfers, such as dependency on intermediaries or centralized validators. [\\[1\\]](#cite-id-11l6thqarn0k)[\\[2\\]](#cite-id-2ex69ljkc53)[\\[3\\]](#cite-id-u85te3elavp)[\\[5\\]](#cite-id-e4rdrrxqscf)[\\[6\\]](#cite-id-r7iw43jxqvm)  \n$$widget0 [YOUTUBE@VID](o9bhpZyN7OA)$$  \n  \n# Overview  \n  \nBTC.b is a wrapped version of [Bitcoin](https://iq.wiki/wiki/bitcoin) that operates on the [Avalanche](https://iq.wiki/wiki/avalanche) network through the Avalanche Bridge. It allows for cross-chain transfers, providing interoperability across [LayerZero](https://iq.wiki/wiki/layerzero)-supported networks. The creation of BTC.b aims to create a universal form of Bitcoin that can be used across different [blockchain](https://iq.wiki/wiki/blockchain) ecosystems.  \n  \nThe OFT standard facilitates the secure transfer of fungible tokens, including BTC.b, across various [blockchain](https://iq.wiki/wiki/blockchain) networks. It operates on [LayerZero’s](https://iq.wiki/wiki/layerzero) omnichain messaging infrastructure, which standardizes token transfers and eliminates the need for middlechains or trusted validators. This approach unifies liquidity and enhances composability with [decentralized applications](https://iq.wiki/wiki/decentralized-application) across blockchains. [\\[1\\]](#cite-id-11l6thqarn0k)[\\[2\\]](#cite-id-2ex69ljkc53)[\\[3\\]](#cite-id-u85te3elavp)[\\[5\\]](#cite-id-e4rdrrxqscf)[\\[6\\]](#cite-id-r7iw43jxqvm)[\\[7\\]](#cite-id-1swpgu8aasv)  \n  \n## Bridge Functionality  \n  \nThe BTC.b bridge enables the movement of [Bitcoin](https://iq.wiki/wiki/bitcoin) between networks such as [Ethereum](https://iq.wiki/wiki/ethereum), Binance Smart Chain, [Arbitrum](https://iq.wiki/wiki/arbitrum), [Optimism](https://iq.wiki/wiki/optimism), [Fantom](https://iq.wiki/wiki/fantom), [Avalanche](https://iq.wiki/wiki/avalanche), and [Aptos](https://iq.wiki/wiki/aptos). This process is supported by [LayerZero's](https://iq.wiki/wiki/layerzero) messaging protocol and the OFT standard, which provide secure and efficient cross-chain transfers. Users can convert BTC to BTC.b on the Avalanche network and vice versa, allowing participation in [decentralized finance (DeFi)](https://iq.wiki/wiki/defi) opportunities within the Avalanche ecosystem. [\\[1\\]](#cite-id-11l6thqarn0k)[\\[2\\]](#cite-id-2ex69ljkc53)[\\[3\\]](#cite-id-u85te3elavp)[\\[5\\]](#cite-id-e4rdrrxqscf)[\\[6\\]](#cite-id-r7iw43jxqvm)  \n  \n## Security and Efficiency  \n  \nThe BTC.b system leverages the OFT standard and the [Avalanche](https://iq.wiki/wiki/avalanche) Bridge to enhance security and efficiency. The bridge utilizes Intel SGX technology, which is designed to meet strict security protocols for [Bitcoin](https://iq.wiki/wiki/bitcoin) transfers. Additionally, BTC.b transfers are cost-effective, with minimal fees and no bridging fees for most transactions, aside from standard [gas](https://iq.wiki/wiki/gas) costs.[\\[2\\]](#cite-id-2ex69ljkc53)[\\[3\\]](#cite-id-u85te3elavp)[\\[5\\]](#cite-id-e4rdrrxqscf)[\\[6\\]](#cite-id-r7iw43jxqvm)  \n  \n## Acquisition of BTC.b  \n  \nTo obtain BTC.b, users can bridge their [Bitcoin](https://iq.wiki/wiki/bitcoin) to the [Avalanche](https://iq.wiki/wiki/avalanche) network using the [Core Wallet](https://iq.wiki/wiki/core) extension. This process involves sending Bitcoin to a specified bridge address, where it is secured within an SGX enclave. The equivalent amount of BTC.b is then minted on the Avalanche network, allowing users to engage with the Avalanche [DeFi](https://iq.wiki/wiki/defi) ecosystem or transfer BTC.b across supported networks.  \n  \nWhen transferring BTC.b to non-[EVM](https://iq.wiki/wiki/ethereum-virtual-machine-evm) chains like [Aptos](https://iq.wiki/wiki/aptos), specific steps are required, such as asset registration and claim transactions. These steps are intended to enhance the security and smooth operation of transfers to chains with different architectural designs. Subsequent transfers of the same token do not require these additional procedures.[\\[2\\]](#cite-id-2ex69ljkc53)[\\[3\\]](#cite-id-u85te3elavp)[\\[4\\]](#cite-id-vozolhnz4q)[\\[5\\]](#cite-id-e4rdrrxqscf)[\\[6\\]](#cite-id-r7iw43jxqvm)  \n$$widget0 [YOUTUBE@VID](tY_XcOw771k)$$","summary":"Bitcoin Avalanche Bridged (BTC.b) is a wrapped Bitcoin on the Avalanche Network, enabling cross-chain transfers via LayerZero's Omnichain Fungible Token standard.","categories":[{"id":"cryptocurrencies","title":"Cryptocurrencies"}],"promoted":0,"tags":[{"id":"Protocols"},{"id":"Blockchains"}],"metadata":[{"id":"references","value":"[{\"id\":\"11l6thqarn0k\",\"url\":\"https://www.forbes.com/digital-assets/assets/bitcoin-avalanche-bridged-(btc.b)-btc.b/\",\"description\":\"Bitcoin Avalanche Bridged (BTC.b)\\nPrice & News\",\"timestamp\":1723960247105},{\"id\":\"2ex69ljkc53\",\"url\":\"https://medium.com/avalancheavax/avalanche-bridge-adds-native-bitcoin-support-6306236fb506\",\"description\":\"Avalanche Bridge Adds Native Bitcoin Support\\n\",\"timestamp\":1723960299416},{\"id\":\"u85te3elavp\",\"url\":\"https://support.traderjoexyz.com/en/articles/6711387-bridge-avalanche-bitcoin-bridge\",\"description\":\"Bridge: Avalanche Bitcoin Bridge\\n\",\"timestamp\":1723960344152},{\"id\":\"vozolhnz4q\",\"url\":\"https://support.avax.network/en/articles/6935265-core-web-how-do-i-convert-btc-to-btc-b\",\"description\":\"Core web: How do I convert BTC to BTC.b?\\n\",\"timestamp\":1723960388287},{\"id\":\"e4rdrrxqscf\",\"url\":\"https://bitcoinbridge.network/faq\",\"description\":\"FREQUENTLY\\nASKED QUESTIONS\",\"timestamp\":1723960420502},{\"id\":\"r7iw43jxqvm\",\"url\":\"https://www.youtube.com/watch?v=tY_XcOw771k\",\"description\":\"Deep Dive into BTC.b | Michelle Tian from Ava Labs | E23\\n\",\"timestamp\":1723960465415},{\"id\":\"1swpgu8aasv\",\"url\":\"https://www.youtube.com/watch?v=o9bhpZyN7OA\",\"description\":\"Supercharge your bitcoin with BTC.b and Avalanche DeFi\\n\",\"timestamp\":1723960516873}]"},{"id":"website","value":"https://bitcoinbridge.network/"},{"id":"contract_url","value":"https://snowtrace.io/token/0x152b9d0FdC40C096757F570A51E494bd4b943E50?chainId=43114"},{"id":"twitter_profile","value":"https://twitter.com/avalancheavax"},{"id":"discord_profile","value":"https://discord.com/invite/RwXY7P6"},{"id":"coinmarketcap_url","value":"https://coinmarketcap.com/currencies/bitcoin-avalanche-bridged/"},{"id":"coingecko_profile","value":"https://www.coingecko.com/en/coins/bitcoin-avalanche-bridged-btc-b"},{"id":"medium_profile","value":"https://medium.com/avalancheavax/avalanche-bridge-adds-native-bitcoin-support-6306236fb506"},{"id":"arbiscan_profile","value":"https://arbiscan.io/address/0x2297aebd383787a160dd0d9f71508148769342e3"},{"id":"avascan_profile","value":"https://avascan.info/blockchain/all/address/0x152b9d0FdC40C096757F570A51E494bd4b943E50"},{"id":"previous_cid","value":"QmPKjS1fjCkSxa33kTrfh6QWA9iftvbk9FiRJvyfYg6yRd"}],"user":{"id":"0x6753061a4cffbc0A617e57E956A298D88702a94B"},"author":{"id":"0xd5893989b9952c6568a99F854795AcC5Ae480D56","profile":{"username":"DevMaxFllip","avatar":"QmWtkHuWXZBjQGzjmGUYtHUJ5zdhSqrnkctgMEe9GStvZB"}},"media":[{"name":"o9bhpZyN7OA","id":"https://www.youtube.com/watch?v=o9bhpZyN7OA","size":"0","type":null,"source":"YOUTUBE"},{"name":"tY_XcOw771k","id":"https://www.youtube.com/watch?v=tY_XcOw771k","size":"0","type":null,"source":"YOUTUBE"},{"name":"BTC.b.png","id":"QmQfsAhENFv13kMa9dS3B6LuXyZxnctgtY6CNK6eA6gwA2","size":"0.01","type":"GALLERY","source":"IPFS_IMG"},{"name":"bridge-bitcoin-using-avalanche-bridge.jpg","id":"QmaEghLrN2cYZefY6nHuPgKcNJBMG8KHoKau9YBzbENz3y","size":"0.03","type":"GALLERY","source":"IPFS_IMG"},{"name":"Avalanche-Featured-1.webp","id":"QmaayS1UqxJZA6gjhDND4sHUemV34wNmbLK2eviapTnYsX","size":"0.01","type":"GALLERY","source":"IPFS_IMG"}],"views":6,"events":[{"title":"Avalanche added support for BTC in its cross-chain bridge in June 2022","description":"Smart contract blockchain Avalanche added support for BTC in its cross-chain bridge in June 2022.","type":"CREATED","date":"2022-06","link":"https://www.coindesk.com/markets/2023/01/19/bitcoin-bridged-to-avalanche-surpasses-btc-locked-in-lightning-network/","multiDateStart":null,"multiDateEnd":null}],"linkedWikis":{"founders":["anon"],"blockchains":["avalanche"]},"founderWikis":[{"id":"anon","title":"Anon"}],"blockchainWikis":[{"id":"avalanche","title":"Avalanche"}],"ipfs":"QmPKjS1fjCkSxa33kTrfh6QWA9iftvbk9FiRJvyfYg6yRd","transactionHash":"0x9fd2af6ea6981f46aa217cdcce172b30795a9f8607639b9ad283445643bb6333","created":"2024-08-18T05:59:59.684Z","updated":"2024-08-18T18:07:04.515Z","images":[{"id":"QmZXZKUCU9QaR5rgjqSCxaipHt73JarWZyrZxGTiuJY1EZ","type":"image/jpeg, image/png"}]}