Bitcoin NFTs Explode in Popularity as BitMEX Research Shows 13,000 Ordinals
Interest has skyrocketed following the first Ordinals transaction on Dec. 14
https://www.coindesk.com/tech/2023/02/08/bitcoin-nfts-explode-in-popularity-as-bitmex-research-shows-13000-ordinals/

This is very interesting and I'm following the development. People are looking for new ways of NFT techniques.

OP, hope that your project will be discovered too.
Please continue it. I understood it now and it is an amazing project. Maybe you have to do more PR work 

same 

to better understand how it works - my bitcoin address: 1FgEoVLZFGytudv3qHnY79cCTiQn7aP43b

Yes, I didn't get that too. But read this thread: Who has/had the oldest mined Bitcoin? https://bitcointalk.org/index.php?topic=5421158.0 ... it's getting interesting 

Yes, earlier ... only few days after Bitcoin started.

But it gets better: these mined coins were transferred in 2011 (txid 567a9a7f9191db644a09985fad113dd6ee770eac69454317430e694305be9c56)
Whoever created that transaction (39 inputs) had private keys of addresses that mined earlier. Here they're talking about transactions that are connected, and this is one of these:
How to know who is Satoshi Nakamoto or the Bitcoin Cinderella shoe. https://bitcointalk.org/index.php?topic=5159407.0

The message in the signature (Bitcoin address 1E9YwDtYf9R29ekNAfbV7MvB4LNv7v3fGa) has recently incoming transactions. People testing/want to know something 

If you generate a random private key in the range 1 - 2^256 the odds that you will get a value that is not in the valid range 0x1 - 0x0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364140 is 1 in 267776665566007192515705986938822075896 ... nearly impossible 

Maybe it's just to show here that nobody will answer and sell a very old address/key.

5 years ago someone wanted to buy old addresses/keys (older than 2015) and got offers:

Yes, there are threads selling old addresses, especially 2013-2014 addresses. https://bitcointalk.org/index.php?topic=2893269.0

But this address is not old, it is veryveryold. Who mined 2 weeks after Bitcoin was released? I expected that Satoshi had the most mined blocks, so it would be very likely that it is Satoshi. Do you think that this miner sold his address now, 13 years later? And I don't think that Satoshi would sell addresses.

In this thread "Who has/had the oldest mined Bitcoin?" https://bitcointalk.org/index.php?topic=5421158.0 someone posted that signature:


The message is an unused Bitcoin address. But the signer's address was used in January 2009 (~2 weeks after Bitcoin started).


As signatures don't have timestamps, it is possible that this signature was created back then. I searched the net the whole day, couldn't find an answer. I know someone posted here on bitcointalk years ago, that he mined block ~2000-3000 and that was the oldest mined block mentioned here.

The signature above was created with an older key (address was used in January 2009). Could it be Satoshi? Did he sign that message?

Yes, that was exactly what I did too. Checked some addresses in the list, but the oldest I found was from December 2009. The signature in the example above is from January 2009. Years ago there was someone here on bitcointalk who mined block ~2000 and that was the oldest what was known.

Now this signature from January 2009    Maybe someone knows more?

This is not an earls adopter. It is early-early-early adopter ... January 2009
Could be Satoshi, and that is no joke.

Maybe OP is inviting Satoshi 


Satoshi?

"safely" & "on its platform" is against Bitcoin safety.

YES!

https://www.benzinga.com/markets/cryptocurrency/22/10/29138455/argentinas-energy-company-mines-bitcoin-using-residual-gas
Argentina's Energy Company Mines Bitcoin Using Residual Gas

• Argentina's power company comes up with a novel way to mine Bitcoin.
• An initiative to power Bitcoin mining using residual gas is being tested in Vaca Muerta oil field.

Months ago ME countries started Bitcoin mining:
https://www.coindesk.com/business/2022/06/03/middle-east-oil-producers-move-into-bitcoin-mining-with-crusoe-energy-stakes/

Crusoe Energy, the privately held U.S. company that pioneered bitcoin (BTC) mining by using wasted natural gas as a power source, is expanding in the Middle Eastern region with investments from Mubadala – the sovereign wealth fund (SWF) of Abu Dhabi – and the Oman Investment Authority (OIA).


Did you know this? 

exactly

Post-quantum encryption contender is taken out by a common PC

"Last month, the US Department of Commerce's National Institute of Standards and Technology, or NIST, selected four post-quantum computing encryption algorithms to replace algorithms like RSA, Diffie-Hellman, and elliptic curve Diffie-Hellman, which are unable to withstand attacks from a quantum computer.

In the same move, NIST advanced four additional algorithms as potential replacements pending further testing in hopes one or more of them may also be suitable encryption alternatives in a post-quantum world. The new attack breaks SIKE, which is one of the latter four additional algorithms. The attack has no impact on the four PQC algorithms selected by NIST as approved standards, all of which rely on completely different mathematical techniques than SIKE."

source: https://arstechnica.com/information-technology/2022/08/sike-once-a-post-quantum-encryption-contender-is-koed-in-nist-smackdown/


When Bitcoin switches to post quantum algo - which one will it take?

Post-quantum encryption contender is taken out by a common PC

"Last month, the US Department of Commerce's National Institute of Standards and Technology, or NIST, selected four post-quantum computing encryption algorithms to replace algorithms like RSA, Diffie-Hellman, and elliptic curve Diffie-Hellman, which are unable to withstand attacks from a quantum computer.

In the same move, NIST advanced four additional algorithms as potential replacements pending further testing in hopes one or more of them may also be suitable encryption alternatives in a post-quantum world. The new attack breaks SIKE, which is one of the latter four additional algorithms. The attack has no impact on the four PQC algorithms selected by NIST as approved standards, all of which rely on completely different mathematical techniques than SIKE."


source: https://arstechnica.com/information-technology/2022/08/sike-once-a-post-quantum-encryption-contender-is-koed-in-nist-smackdown/

12 years ago mined 50 Bitcoin just moved from address 18eXJskHRVvKrqmxD9T6K6UQ6GBC6ya2WS to 1Jr5UBqpQL63BwMgChK653q6pCrwrKVkzg (49.49999994 BTC) and 35tostxpUGa3NAzuuWMUjPF7jJacZ2FzGS (0.5 BTC) and used 0.000011 BTC fees. The transaction includes 2 dust inputs, whoever sent the to this address and maybe thought that they won't move 


address: 18eXJskHRVvKrqmxD9T6K6UQ6GBC6ya2WS

mined: Jul 12, 2010 5:15 PM UTC - Coinbase
txid: e791dd210ff6cfff912d6b1c6f4194df6ef79485580a01335b8e4840a5cf1940

moved after 12 years: Aug 22, 2022 1:31 PM UTC
txid: 4b18f0224cf7607d962e6b1e40b07128c8aca0daa7ede146787a1aca9cdac4bd

Doble spend is impossible in the Bitcoin network.

If a node accepted a transaction into the mempool, so this node will reject an incoming transction with the same tx output.

It is possible that another node, that hasn't received the first transaction collects the second one as valid, In that case the nodes would keep their received transactions in their mempool until a valid block with one of this transactions has been created. As only one of these two transactions can be in the block, the node with the transaction that isn't in the block will be rejected as there is already a tx with that unspent tx output in the block.

You can read tis thread "[TESTED IT] Changing the transaction after broadcasting, what happens?" for further details:
https://bitcointalk.org/index.php?topic=5397102.0