Bitcoin Just Fired The Miners (Hard Fork)
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In this video, I discuss how Bitcoin just fired the SHA-256 miners and replaced them with Blake2B miners.
It's a new beginning for Bitcoin.
Not investment advice! Consult a financial advisor.
Links:
https://mempool.guide/
https://mainnet.observer/charts/mining-pools-hashrate-distribution/
https://mempool.guide/mining
https://mempool.space/
https://www.youtube.com/@ConnorsLab/videos
https://github.com/Retropex/knots-startos/releases/tag/v29.4.1_4-knots
https://github.com/Retropex/knots-startos/releases
https://test.bitcoinknots.org/~luke-jr/programs/bitcoin/files/bitcoin-knots/29.x/29.4.1.knots20260508/test/rc4/
https://bitcoinknots.org/
https://bitcointalk.org/index.php?topic=191.msg1585#msg1585
https://x.com/mattkratter/status/2094081488367313000
https://www.prnewswire.com/news-releases/joint-statement-of-ocean-and-luke-dashjr-302864347.html
https://x.com/Convoy_Mining
Here's how to add an OP_RETURN output in Sparrow Wallet:
1
Start a new transaction
Go to the wallet's Send tab as you normally would when creating a transaction. You'll build the OP_RETURN output alongside your regular payment output(s).
2
Add a payment output
Enter the recipient address and amount for your actual payment, just like a normal send. This step is optional if you only want to embed data with no real payment — but most transactions still need at least one spending output.
3
Add an OP_RETURN output
Click the '+' icon to add another output/payment row. In the address field of this new row, type or select "OP_RETURN" instead of an address. Sparrow will switch the field into a data-entry mode.
4
Enter your data
Type the text or hex data you want embedded. Sparrow lets you toggle between ASCII/text and Hex input. Keep in mind OP_RETURN data is limited to 80 bytes by Bitcoin Core's standard relay policy (Knots nodes may enforce a different limit).
5
Set the amount to zero
The OP_RETURN output should have a value of 0 BTC — it's a provably unspendable output used only to carry data, not to hold funds.
6
Review fee and outputs
Check the transaction preview showing all outputs, including the OP_RETURN data payload, and confirm the fee rate is appropriate before proceeding.
7
Sign and broadcast
If using a hardware wallet like your Coldcard, export the PSBT, sign it on the device, then import the signed PSBT back into Sparrow and broadcast. Otherwise sign and broadcast directly from Sparrow.
A couple of notes worth flagging:
You need a Bitcoin balance to spend from — OP_RETURN is added as an extra output in a transaction that spends your existing UTXOs, so you'll pay a mining fee for it like any other transaction.
Data is permanent and public on the blockchain once confirmed — don't embed anything sensitive or something you can't legally distribute.
Since you run a Knots node, be aware Knots enforces stricter relay filtering on OP_RETURN/data-carrying outputs than Bitcoin Core does by default, which is relevant if you're relying on your own node for relay/mempool acceptance rather than just broadcasting through Sparrow's connected server.
I am not being paid or otherwise compensated by any company or cryptocurrency project that I mention in my videos. My opinion is not for sale. Please do not contact me with any affiliate or advertising deals.
#Bitcoin
#fork
#bitcoinmining
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