[ANN] BitcoinBT (BTCBT) – Bitcoin Hard Fork

BitcoinBT (BTCBT) – Bitcoin Hard Fork | Global Public Test Phase

Hello Bitcoin community,

We are opening a global public testing phase for BitcoinBT (BTCBT).

BitcoinBT is a Bitcoin hard fork built on the Bitcoin Core v26 codebase.
This project is independent and is not affiliated with the Bitcoin Core development team.
This announcement is published strictly for technical validation purposes.

There is no investment solicitation, no airdrop, and no guarantees.

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What is BitcoinBT?

BitcoinBT is a direct Bitcoin hard fork that inherits the Bitcoin blockchain
up to a defined fork height and applies modified consensus rules thereafter.

• Fork point: Bitcoin block height 903,844
• BitcoinBT activation: 903,845
• Proof-of-Work: SHA-256d
• Difficulty algorithm: ASERT
• Block interval: 5 minutes
• Genesis block: Bitcoin genesis block (inherited)

All Bitcoin block history prior to the fork height is preserved.
Only blocks generated after activation follow BitcoinBT rules.

BitcoinBT operates as an independent network and does not share balances with Bitcoin.
BTC holders do not automatically receive BTCBT.

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Network Status

A previously identified ASERT difficulty adjustment inconsistency
has been corrected and verified.

The network is now operating under intended consensus rules,
with difficulty retargeting functioning normally.

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Purpose of This Test

This public test phase focuses on real-world protocol validation:

• Full node operation and chain synchronization
• Block validation and consensus behavior
• SHA-256d mining compatibility
• ASERT difficulty responsiveness
• Wallet creation and transaction handling
• Stability across different regions and environments

Running a node, mining, monitoring synchronization,
or reviewing code are all valid contributions.

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Easy Start (Windows)

Prebuilt binaries are available here:

https://github.com/bitcoinbtuser/bitcoinbt-source/releases

Linux and macOS users may build from source.

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Mining Test (Optional)

Public test stratum:

Code:

stratum+tcp://bitcoinbt.xyz:3333

Algorithm: SHA-256d
Standard SHA-256 ASIC miners and CPU miners are supported.

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Block Explorer

https://explorer.bitcoinbt.xyz

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Source Code (Open Source)

GitHub:
https://github.com/bitcoinbtuser/bitcoinbt-source

Testing guidelines, contribution policy, and SECURITY.md
are included in the repository.

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Important Notes

• This is a technical public testing phase
• Test coins have no real-world value
• Consensus rules may evolve during testing
• BTC ownership is not relevant
• No airdrops or token distributions are planned

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Bug Reports & Feedback

Report technical issues via GitHub Issues:
https://github.com/bitcoinbtuser/bitcoinbt-source/issues

Security-related issues must follow SECURITY.md
and should not be disclosed publicly.

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We welcome node operators, developers, miners,
and anyone interested in Bitcoin protocol-level experimentation.

BitcoinBT Team