Bitcoin Core Retires OP_RETURN Size Limit, What Does This Mean?

By: bitcoin ethereum news|2025/05/07 02:30:02
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Bitcoin Core: OP_RETURN size limit to be lifted in next release What is OP_RETURN and why is its limit change crucial for Bitcoin Core? Size of OP_RETURN, an output of Bitcoin (BTC) transaction, will not be limited to 80 bytes any longer. This upgrade has been debated since 2014. Proponents highlight that it will unlock a new avenue for Bitcoin-based developments, while critics warn that it could damage Bitcoin’s (BTC) economy. Bitcoin Core: OP_RETURN size limit to be lifted in next release Bitcoin (BTC), the largest cryptocurrency, is set to undergo a major transformation of the design of its most mainstream implementation, Bitcoin Core. The size of OP_RETURN, an element of Bitcoin (BTC) transactions, has gotten rid of the 80-byte limit. Starting from the next Bitcoin Core release, the first blockchain will mine transactions with bugger outputs and and allow any number of these outputs. Bitcoin Core has announced they will remove the OP_RETURN limit in their next release. Many users find this to be an undesirable change for a number of reasons. You can refuse to upgrade and stay on 29.0 or run another implementation like @BitcoinKnots . https://t.co/WcUTOA5HQf — Samson Mow (@Excellion) May 5, 2025 The update was announced by Greg Sanders, core developer of BlockStream Bitcoin-centric studio, on his GitHub page. The author opined that the OP_RETURN size limit was designed to protect the network, but it is now failing this mission: The change re-affirms that Bitcoin is governed by transparent, minimal rules rather than editorial preference. By retiring a deterrent that no longer deters, Bitcoin Core keeps the policy surface lean and lets the fee market arbitrate competing demands. With bigger OP_RETURN size, developers will be able to embed a larger volume of data into Bitcoin (BTC) transactions. Seasoned Bitcoin (BTC) entrepreneur Samson Mow, JAN3 CEO, highlights that such change would face legitimate criticism from some Bitcoiners: Many users find this to be an undesirable change for a number of reasons. You can refuse to upgrade and stay on 29.0 or run another implementation like Bitcoin Knots. The popularity of Luke Dashjr’s Bitcoin Knots, an alternative implementation of Bitcoin (BTC) node software, is already surging, as many network operators are concerned about potential effects of this change. Bitcoin Knots does not allow processing of nonpayment transactions. What is OP_RETURN and why is its limit change crucial for Bitcoin Core? Simply put, OP_RETURN limit size indicates how much data can be embedded into a Bitcoin (BTC) transaction. For standard ones – like payment transfers – the limit is regular. However, more data-heavy use cases are censored by the existing limit. As such, the Bitcoin (BTC) network will process a greater amount of data. On the one hand, it would open new opportunities for Bitcoin (BTC) DeFis and NFTs. You Might Also Like On the other hand, it might destroy the monetary status of Bitcoin (BTC), making it yet another altcoin, critics say. The debate about the OP_RETURN size limit has an 11-year history. Source: https://u.today/finally-bitcoin-core-retires-opreturn-size-limit-what-does-this-mean

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WEEX P2P update: Country/region restrictions for ad posting

To improve ad security and matching accuracy, WEEX P2P now allows advertisers to restrict who can trade with their ads based on country or region. Advertisers can select preferred counterparty locations for a safer, smoother trading experience.

 

I. Overview

When publishing P2P ads, advertisers can now set the following:

Allow only counterparties from selected countries or regions to trade with your ads.

With this feature, you can:

Target specific user groups more precisely.Reduce cross-region trading risks.Improve order matching quality.

 

II. Applicable scenarios

The following are some common scenarios:

Restrict payment methods: Limit orders to users in your country using supported local banks or wallets.Risk control: Avoid trading with users from high-risk regions.Operational strategy: Tailor ads to specific markets.

 

III. How to get started

On the ad posting page, find "Trading requirements":

Select "Trade with users from selected countries or regions only".Then select the countries or regions to add to the allowlist.Use the search box to quickly find a country or region.Once your settings are complete, submit the ad to apply the restrictions.

 

When an advertiser enables the "Country/Region Restriction" feature, users who do not meet the criteria will be blocked when placing an order and will see the following prompt:

If you encounter this issue when placing an order as a regular user, try the following solutions.

Choose another ad: Select ads that do not restrict your country/region, or ads that allow users from your location.Show local ads only: Prioritize ads available in the same country as your identity verification.

 

IV. Benefits

Compared with ads without country/region restrictions, this feature provides the following improvements.

Aspect

Improvement

Trading security

Reduces abnormal orders and fraud risk

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Matches ads with more relevant users

Order completion rate

Reduces failures caused by incompatible payment methods

V. FAQ

Q1: Why are some users not able to place orders on my ad?
A1: Their country or region may not be included in your allowlist.

 

Q2: Can I select multiple countries or regions when setting the restriction?
A2: Yes, multiple selections are supported.

 

Q3: Can I edit my published ads?
A3: Yes. You can edit your ad in the "My Ads" list. Changes will take effect immediately after saving.

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