Interesting thing. Not exactly what i mentionned tho. This requires running a client and connect to peers.

Thanks for the documentation. I'm checking it out rn.
How to keep my DCA going on when migrating to a cold/paper wallet ? Do i still have to buy through a CEX manually every week ?

As a Newbie, i DCA-ed BTC for the past 6 months on Binance
I don't want to use any CEX no more. I want my keys.
So based on internet articles and a bit of chat-gpt  i could generate my key pair locally as follow:

Use secp256k1 elliptic curve to generate a priv key:
> openssl ecparam -genkey -name secp256k1 -noout -out privatekey.pem

Find matching pub key on the curve:
> openssl ec -in privatekey.pem -pubout -out publickey.pem

Derive an address in python:

from ecdsa import VerifyingKey
import hashlib
import base58

def generate_bitcoin_address_from_public_key(public_key_bytes):
    public_key = VerifyingKey.from_pem(public_key_bytes)

    # Hash the public key
    hash_pubkey = hashlib.sha256(public_key.to_string()).digest()
    hash_pubkey_ripemd160 = hashlib.new('ripemd160', hash_pubkey).digest()

    version_byte = b'\x00'
    hash_pubkey_with_version = version_byte + hash_pubkey_ripemd160

    checksum = hashlib.sha256(hashlib.sha256(hash_pubkey_with_version).digest()).digest()[:4]

    binary_address = hash_pubkey_with_version + checksum

    bitcoin_address = base58.b58encode(binary_address).decode('utf-8')
   
    return bitcoin_address

with open('publickey.pem', 'r') as file:
    public_key_pem = file.read()

bitcoin_address = generate_bitcoin_address_from_public_key(public_key_pem.encode('utf-8'))

print("Bitcoin Address:", bitcoin_address)


This got me the following:

-----BEGIN EC PRIVATE KEY-----
MHQCAQEEIDRd6/hvSUmI3jubQv+FEve/bkPRBi4d4ddCKf1Cdz8yoAcGBSuBBAAK
oUQDQgAEr6/Q3oyxMl6Fourug/AVW2a/WyrhoGDPP0iXBPp2rEKSRF+p1G5DL7BL
gFsOOBN/U0IT3iiw7agk/DCTxEO0wQ==
gFsOOBN/U0IT3iiw7agk/DCTxEO0wQ==
-----END EC PRIVATE KEY-----

-----BEGIN PUBLIC KEY-----
MFYwEAYHKoZIzj0CAQYFK4EEAAoDQgAEr6/Q3oyxMl6Fourug/AVW2a/WyrhoGDP
P0iXBPp2rEKSRF+p1G5DL7BLgFsOOBN/U0IT3iiw7agk/DCTxEO0wQ==
-----END PUBLIC KEY-----

Bitcoin Address: 12XjArifNjhfNWDo5MBZaBMXjyYVVbVgxZ

So, did i do the correct thing ? Is it safe to transfer my BTC to an address generated this way (not this one ofc)
Or is there a better way to do it ?

Also keys seem to be base64 encoded, should i save it in another form ?

Thnaks in advance.

In my attempt to learn blockchain development, i had the idea of The Bold Game
This is really simple : a deadline is set ( 1 Jan. 2025 )
By the deadline, the highest bidder will get the whole pool.

So i'd like to hear your feedbacks guys, you can try The Bold Game on the testnet:

https://theboldgame.tiiny.site/

And review the contract's code on my dedicated GitHub: https://github.com/boldfi/theboldgame
I didn't really pay much attention to the front-end development. However, I am interested in your feedback on the contract code.

Here is the contract in explorer: https://testnet.bscscan.com/address/0x836564b8fc6a47a1d32ff05352371b7a0bc5e8ad

Also what would you think about migrating to mainnet. If so i'd like to find a way to make it a BTC-game, for development purposes i deployed it on BNB chain.


Could it be a cool game ?

Maybe the data is no longer available. But it not easy to completely erase data. Formatting an HDD doesn't make data unavailable. Experts can retrieve the data. Satoshi probably knew how to totally destroy data, but it seems strange to me that all the services he relied on, such as the mail provider, or the domain name registrar, have had their data erased in a proper manner.
I remember a documentary showing how specialized unit could retrieve some sensible data from a HDD that had been 0-filled and physically damaged, by rebuilding pieces of pieces of data from magnetic residues, along with forensics investigations. Crazy thing.

Mail provider, domain registrar, web hoster. They probably could retrieve the IP that registered the domain / created the email ... by employing experts into data retrieving and search for days into old HDD.

So i guess with enough ressources it would be possible.

While eBay and Amazon may not experience downtime, they do censor. These are lobbies-influenced markets.
Several cases of product's removal have been reported.

Amazon promotes products which fit the "right-thinking trend". Go on and try to sell a product containing too much plastic, its visibility will drop to zero, getting overtaken by woke products.
Of course i do exaggerate, but you get the idea.

Big techs are lobby-driven and always follow trends to sell more, censorship is real on those platforms. Not to mention your data are being stored, analyzed and sold to feed some other big tech..
I do not care about my delivery guy knowing i ordered a package on the weekend. I do care about Amazon knowing what exact reference i ordered at what time, while doing what..

If you are ok with those practices, a decentralized marketplace may indeed not fit your needs.

I understand your point of view. But i still think such a market would be interesting for a lot of people.
Lot of online industries are now heading toward decentralization architecture, and i don't think e-commerce will be an exception.

Decentralization offers so much benefits ( even if you don't seem interested by it ) such as privacy, server downtime and censorship resistance, increased accessibility... that i don't think the old, simple client/server infrastructure will still be relevant in 10 years.

I may be wrong tho, your feedback is appreciated.

Wow lot of opinions. I personally believe Satoshi's identity has been carefully planned to remain unknown when he thougth his plans. But we gotta be real and say no one is anonymous online nowadays.
Using 20 VPNs in sequence along with Tor from a cybercafe won't change nothing. If someone really wants to find you and has enough ressources, he will.

So i guess Satoshi's anonymity is partly due to the fact that he was active way before he became known -- and potentially searched --
Also no one wants to engage so much ressources and money just to find him, but with an unlimited amount of money he could probably be found.

In its purest form, with absolute freedom, it would indeed allow anyone to sell anything without restrictions. If the wrong community gets to know it, it would indeed turn into an unstoppable darkmarket. That's why a governance system is mandatory. One could get a product / seller banned by voting. Enough votes lead to listing erasing. After a first report, the product wouldn't be accessible to anyone until vote ends.
Illegal products wouldn't remain accessible more than a couple hours.

I also pictured some members roles, where most trustable users ( dispute ratio, number of orders ... ) would have more weight in votes, and would moderate the market. They could get a revenue from a dedicated pool even.


This market is not for average users. Its a crypto-enthusiasts dedicated market for those who care about privacy. For some, sharing infos with big companies is a big deal. I do care.

Only buyers would be able to leave a feedback on a product / seller, and a seller wouldn't be able to buy its own product. This means a scammer would have to create multiple accounts ( key pairs ), fund each address, place fake orders ( incurring fees ), wait through escrow periods (potentially mandatory for new sellers), and then give each fake orders a positive feedbacks ( fees again ).

I think that's a lot of effort, time and fees, just to scam one or two people and see negative feedbacks appear right after. Someone with enough funds wouldn't even bother doing so. Someone with low funds couldn't.

I think that the terms of the contract still need to be thought through and clearly articulated. The marketplace would obviously be open source.

Since anyone could create a frontend and publish it, it would theoretically be possible for a malicious actor to open a rogue access point which actually doesn’t interact with the original contract. Though, it would easily be verifiable by anyone, and such access points would rapidly be flagged and remain unused.

Even if some reputable apps and frontends would be deployed, the only way to be 100% sure to never loose access to the market, would be to save the main contract address, and to interact with it directly, or through a front end that runs locally, which is extremely simple.

For digital goods, no need to give any informations, the trade could go on in a fully anonymous way.

For physical products, your shipping address would be ciphered using the seller’s key, ensuring only him would be able to read it. This makes a two parties trade, with only one information shared.

If one doesn’t want to share its delivery address with an unknown —maybe reputed— seller, many ways exist to proceed without giving this informations. The good old escrow service, the package forwarding service, dead drops, public meetings, mailbox master keys, pickup points and so on …

That’s for the purists, the goal isn’t to give 100% privacy — even if anyone could — but to give life to an autonomous, decentralized and users-driven market.

Opensea is one among many marketplace for NFTs. I'm thinking a real marketplace where people meet to exchange good and services against cryptocurrency. Indeed fees would increase when demand increases.
But on low-fees blockchains, publishing a product would cost less than a dollar.
Furthermore, i think fees could actually be leveraged to protect the market against spamming and scams.


I actually misused the forum after my registration and here is my original post, where i talk about user friendliness
https://bitcointalk.org/index.php?topic=5494082.0

I understand your arguments.
Though, in the case of a fully smart-contracts powered marketplace, users would not need to install any client. The market would theoretically be accessible from your computer terminal if you'd like to. All that would be required to interact would be to know the 42 contract's address characters, and an internet connection.

In practice, user-friendly frontends could emerged and be hosted on traditional URLs to provide a more intuitive and familiar interface for users.

Actually, an infinite number of UIs may be developed, all connected to the same underlying marketplace. This would make the market highly modular, and accessible to a very broad audience.


About privacy, anyone could order a thousand times, each time with a new identity. On such a market, the "identity" would only be defined by your key pair.
Also, none of your personal information, such as your phone number or last name, would ever end up on leakbase.io or any other shady site.

From my perspective, this represents the pinnacle of peer-to-peer technology, and I find the idea very appealing.

I totally agree. But Satoshi's technology challenges financial institutions, and I believe they employ the same, if not more, resources to track him as they do to catch criminals. In any case, this story is fascinating.

Hello,

I'm wondering how Satoshi has managed to remain anonymous. Governments and high-level institutions have expressed interest in knowing his identity, and some have even tried to employ significant resources to find him, as evidenced by certain news reports.

However, Satoshi did use an account on this forum, along with an email address. All connections to this forum logged his IP address/user-agent and other digital traces.

His emails also surfaced during Craig Wright's trial. How is it that the email provider does not have IP and other information? Even behind a VPN, I believe that major institutions have the means to request the real IP from the VPN provider.

I don't want his identity to be revealed ! But I'm simply wondering how he has managed to evade the most powerful entities since 2010. Even with current anonymization technologies, the most prominent cybercriminals/activists get caught.

Forgive me if this topic has been covered or if it seems silly to you, but I am amazed by the myth of Satoshi

I see a lot of benefits for such a market.

The market would be accessible 24/7 from anywhere in the world, eliminating the risk of server downtime or IP restrictions that could occur with a centralized market.

Secondly, the market would be crypto compliant, allowing for the democratization of purchasing goods and services with a non-fiat currency.

 I also believe that a community would appreciate the ability to buy products without sharing personal information with big tech companies and large corporations. Whether we like it or not, privacy is disappearing today.

Finally, this would bring to life a market entirely controlled by its users and not by a central authority. Many legitimate services are emerging in a decentralized way, I see utility in it.

Correct me if you disagree. I’m trying to think constructively about such a project.

Thanks for your feedbacks.

DaveF, i was more thinking of pure smart contracts rather than a decentralized p2p client that you have to install + maintain peers.

Maybe i'll try to code a little POC when i get free time.

Greetings,

   Lately, I've been contemplating the feasibility of a fully decentralized marketplace. This marketplace would primarily operate through
   smart contracts, ensuring decentralization and seizure resistance.

   Indeed, all that would be needed to sell and buy on the contract would be the contract' address.
   From that anyone could open its custom frontend access, like an access point.
   So even an 'access point' being taken down, the core of the marketplace would still live somewhere in the wild on the blockchain.

   In the case of physical goods transactions, the contract would encrypt the buyer's home address with the seller's key,
   ensuring that only the buyer and seller could access it.

   To address concerns about scams, sellers could be rated through an upvoting system, and feedback mechanisms could be implemented.

   However, there is one challenge to consider: fees. Any action that involves writing data, such as posting a product for sale or upvoting a seller,
   would incur gas fees. Nevertheless, on blockchains with very low fees, such a decentralized marketplace could still offer significant benefits, in my opinion.

   So i'd like to get your thought and feedbacks of such a market, solely based on smart contracts.  

Greetings,

   Lately, I've been contemplating the feasibility of a fully decentralized marketplace. This marketplace would primarily operate through
   smart contracts, ensuring decentralization and seizure resistance.

   Indeed, all that would be needed to sell and buy on the contract would be the contract' address.
   From that anyone could open its custom frontend access, like an access point.
   So even an 'access point' being taken down, the core of the marketplace would still live somewhere in the wild on the blockchain.

   In the case of physical goods transactions, the contract would encrypt the buyer's home address with the seller's key,
   ensuring that only the buyer and seller could access it.

   To address concerns about scams, sellers could be rated through an upvoting system, and feedback mechanisms could be implemented.

   However, there is one challenge to consider: fees. Any action that involves writing data, such as posting a product for sale or upvoting a seller,
   would incur gas fees. Nevertheless, on blockchains with very low fees, such a decentralized marketplace could still offer significant benefits, in my opinion.

   So i'd like to get your thought and feedbacks of such a market, solely based on smart contracts.