# 5/31 Ethereum NFTs bridge to Bitcoin By [Amp Burapachaisri](https://paragraph.com/@amp) Β· 2023-05-31 bitcoin, ordinals, nft --- After Ordinals came BRC-721. A tri-part collaboration between [Bitcoin Miladys](https://www.bitcoinmiladys.com/), Ordinals Market, and XVerse, you can now bridge [ERC-721 NFTs to Bitcoin](https://twitter.com/BitcoinMiladys/status/1663266300372701185?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1663266300372701185%7Ctwgr%5E96d8f3bb17dafcb7f394d78f298b774e344921e1%7Ctwcon%5Es1_c10&ref_url=https%3A%2F%2Fwww.coindesk.com%2Fweb3%2F2023%2F05%2F30%2Fbrc-721e-token-standard-bridges-ethereum-nfts-to-bitcoin-ordinals%2F). **What is BRC-721E?** --------------------- A new Bitcoin token standard that allows you to convert Ethereum-based NFTs onto Bitcoin. ERC-721 to Ordinals. [![User Avatar](https://pbs.twimg.com/profile_images/1631615600815644672/op4Wa6xZ_normal.png)](https://twitter.com/kiwi_dream) [kiwidream.eth](https://twitter.com/kiwi_dream) [@kiwi\_dream](https://twitter.com/kiwi_dream) [![Twitter Logo](https://paragraph.xyz/editor/twitter/logo.png)](https://twitter.com/kiwi_dream/status/1663266009841811457) Time for a brand new protocol. ![πŸ‘‰](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f449.png) Permissionless bridging from ETH to BTC ![πŸ‘‰](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f449.png) Instantly listed on marketplaces once inscribed ![πŸ‘‰](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f449.png) Cost efficient for large collections ![πŸ‘‰](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f449.png) From the minds of [@OrdinalsMarket\_](https://twitter.com/OrdinalsMarket_) and [@BitcoinMiladys](https://twitter.com/BitcoinMiladys) Introducing BRC-721E ![πŸ₯](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f95d.png)![🧡](https://twemoji.maxcdn.com/v/14.0.2/72x72/1f9f5.png) ![](https://pbs.twimg.com/media/FxUbnsKaUAA-YT3.jpg) [![Like Icon](https://paragraph.xyz/editor/twitter/heart.png) 757](https://twitter.com/kiwi_dream/status/1663266009841811457)[ 3:28 PM β€’ May 29, 2023 ](https://twitter.com/kiwi_dream/status/1663266009841811457) **How does this work?** ----------------------- 1. Transfer your NFT to a burn address (this NFT will no longer exist on Ethereum) 2. This call acts as an on-chain inscription request 3. After burn, BRC-721E data gets inscribed onto a satoshi on the Bitcoin network 4. Collections that bridge using BRC-721E automatically appear on Ordinals Marketplace Where is the metadata stored? ----------------------------- None of the metadata is actually stored onchain. Right now, you can only see onchain _previews_ of your NFTs, by: * Storing a lower quality preview image onchain * Combining BRC-721 and BRC-721E to supply onchain data * Store multipart data onchain * Use teleburn (inscribing in advance) [![User Avatar](https://pbs.twimg.com/profile_images/1663455169957470209/CKuGVmjB_normal.png)](https://twitter.com/optimizoor) [vectorized.eth](https://twitter.com/optimizoor) [@optimizoor](https://twitter.com/optimizoor) [![Twitter Logo](https://paragraph.xyz/editor/twitter/logo.png)](https://twitter.com/optimizoor/status/1663468265895784448) It’s basically trading receipts for jpegs on BTC. [![Like Icon](https://paragraph.xyz/editor/twitter/heart.png) 17](https://twitter.com/optimizoor/status/1663468265895784448)[ 4:51 AM β€’ May 30, 2023 ](https://twitter.com/optimizoor/status/1663468265895784448) [![User Avatar](https://pbs.twimg.com/profile_images/1627399216803848193/eYxJ0w4k_normal.jpg)](https://twitter.com/PleurerP) [pleurer.eth⚑️](https://twitter.com/PleurerP) [@PleurerP](https://twitter.com/PleurerP) [![Twitter Logo](https://paragraph.xyz/editor/twitter/logo.png)](https://twitter.com/PleurerP/status/1663327658623524865) Interesting idea. If the image is ultimately on an ipfs, it now has three points of failure rather than two (BTC, ETH, and three ipfs). How is this superior than having an NFT directly on ETH? [![Like Icon](https://paragraph.xyz/editor/twitter/heart.png) 10](https://twitter.com/PleurerP/status/1663327658623524865)[ 7:33 PM β€’ May 29, 2023 ](https://twitter.com/PleurerP/status/1663327658623524865) * * * Some news & updates: -------------------- ### πŸ€‘ Crypto β˜€οΈ Tether sets aside funds for [Bitcoin mining](https://tether.to/en/tether-invests-in-energy-production-and-sustainable-bitcoin-mining-in-uruguay/) in Uruguay πŸ‡¨πŸ‡³ Beijing publishes Web3 innovation and development [whitepaper](https://blockchain.news/news/Beijing-Releases-Web-30-Innovation-and-Development-White-Paper-2023-at-Zhongguancun-Forum-a0670421-93a4-4490-a203-bc1db367270d) πŸ‡―πŸ‡΅ Binance Japan prepares [launch](https://finance.yahoo.com/news/binance-prepares-launch-regulated-subsidiary-024358396.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAAApuobBkgQN7IP92uTIxx-d1i0xLoEHoWDRyYEOPux55w1ftyXS-8uZ9hms_kTg_Saolso3_bJ0hvCCoMlYM8tXmq2k6NioqViC22B5FuGK_VZE9IO10JLTj_7kU0cIgjpJSmCmZDsQZGNABoS63lyGKlcui_o-gcPefiieydoUU) of regulated subsidiary ### πŸ–ΌοΈNFTs πŸ¦‰ Moonbird partners with Spotify to offer [token-gated playlists](https://nftlately.com/moonbirds-makes-noise-with-spotify-releases-nft-gated-playlist/?utm_campaign=Newsletter%20-%20Weekly%20Stack&utm_medium=email&_hsmi=259848029&_hsenc=p2ANqtz-_b8gaVpO0huUqLgBueN714ryoqWVUYRL1YbOsRbHvMg1QzVV-ISG9W_ERcG8mDPFUDpyxtkdg2E0-qloCBY6LCyD-H22SlSs5ligyEZiqX_wsDp40&utm_content=259848029&utm_source=hs_email) integration 🀝 Binance launches [NFT loan service](https://www.binance.com/en/nft/loan) πŸ‘  Paris Hilton NFT collection launches [today](https://www.sandbox.game/avatar-collections/paris-hilton/en/) --- *Originally published on [Amp Burapachaisri](https://paragraph.com/@amp/brc-721e)*