This is How Bitcoin Spenders Will Benefit From BitMEX’s Bech32 Sending Support

By Vinnie Singh
Published December 12, 2019 Updated December 12, 2019
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This is How Bitcoin Spenders Will Benefit From BitMEX’s Bech32 Sending Support

By Vinnie Singh
Published December 12, 2019 Updated December 12, 2019

BitMEX recently announced its support for withdrawing bitcoin to the Bech32 (native SegWit) address format. The upgrade is effective already. But, how will this upgrade affect users?

Bech32 Sending Support


As of today, BitMEX users will be able to withdraw Bitcoin to three address formats. This implies that the address to which Bitcoin is being withdrawn can be in the Bech32 format.

bitmex blog
Source: BitMEX blog

The deposits, however, will continue to remain in the Pay to Script Hash (P2SH) format addresses because of the exchange’s multi-signature wallet solution.

As per the blog –

“This upgrade is part of BitMEX’s continued commitment to optimize our Bitcoin wallet infrastructure and technology, in order to reduce our usage of blockweight and to lower transaction fees for our customers.”

How Will Users Benefit From This Upgrade?

For users, the upgrade means lower transaction fees when they spend Bitcoin which has been withdrawn to Bech32 addresses. They will not save on fees when they withdraw their Bitcoin from BitMEX, but when they spend the Bitcoin withdrawn from BitMEX to a Bech32 address, they may experience savings in transaction fees.

The reason for why these savings may occur is that when users spend from a non-native address using Segwit, they have to add 20 bytes of overhead. However, when they use native SegWit-style addresses (Bech32), the need for the 20 bytes of overhead is eradicated thereby resulting in smaller transaction size, and thus, the savings.

The figure below shows how transaction size varies with the input redemption type –

Source: BitMEX blog

Here are the typical percentage savings for a 1 input 2 output transaction –

Source: BitMEX blog

Owing to the witness discount on the signature/scripts, the more inputs a transaction has, the more will be the savings. Thus, larger transactions, with more than one input, will typically experience higher savings than smaller transactions.

In the blog, BitMEX has also shared that their next priority for the BitMEX wallet is enabling SegWit (non-native). The upgrades related to the adoption of Segwit will resulting in BitMEX benefitting from a blockweight saving of around 65%.

Other Exchanges With Bech32 Support

Several other leading exchanges including Kraken, Bitfinex, Bitstamp, HitBTC and Gemini have already implemented support for Bech32 addresses. Gemini is one of the few exchanges which has Creating/Receiving support as well along with Bech32 Sending support.

A comprehensive list of software wallets, hardware wallets, web wallets, exchanges, Bitcoin ATM models, blockchain explorers, payment processors and other services with Bech32 address format support can be found here.

The presented content may include the personal opinion of the author and is subject to market condition. Do your market research before investing in cryptocurrencies. The author or the publication does not hold any responsibility for your personal financial loss.
About Author
Vinnie Singh
72 Articles
All things Blockchain & Crypto. 3 years for writing for Crypto Publications, ICOs and Blockchain cos. Book Junkie. Travel Freak. Food rules my mood. Enough said. Follow me on twitter @vinniesingh7 or mail me at vinnie[at]

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