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1  Alternate cryptocurrencies / Altcoin Discussion / Re: Particl: eBay on a blockchain. [Its also an Altcoin] on: October 19, 2021, 08:19:29 AM
Curious what items are in the hidden marketplace?  Grin But how is the trust factor of the buyer and seller is measured here? Is it also feedback-based? Because how can you trust the seller that he has the item to sell? Or how can you trust that the buyer will pay? So is the particl platform serves as somewhat escrow here?

So when the smart contracts are created on the blockchain between buyer and seller, a decentralised escrow is set up between the two of them. This makes scamming infeasible and ensures the buyers and sellers cooperate.

Buyer makes payment for item plus a deposit into escrow (blockchain smart contract). The seller puts the same amount of deposit into escrow (the same blockchain smart contract). Seller ships item. If the buyer is happy with what they received, they release the escrow and the buyer gets back their deposit, the seller their deposit plus payment. If the buyer is not happy then they talk with the seller to try and resolve their issue. Only the seller can release the escrow.

    

So taking a look at a random item for sale on the marketplace:

    

    The buyer would deposit 125 PART payment + 125 PART deposit, the seller deposits 125 PART and post the item. When the item arrives and the buyer is happy, they release funds and receive their 125 PART back, the seller gets 125 PART payment + their 125 PART deposit. Else they have to talk to each other to resolve any issues. This is called Mutually Assured Destitution Escrow or MAD escrow.

    Later versions of the marketplace will allow adjustable escrow deposits between 100-0%.

    I really like the design because it's exactly what Satoshi Nakamoto was working on back in 2009, but they hadn't yet worked out MAD escrow, and didn't have access to ring signatures, blinding and SMSG (a bit message variant developed by the Particl team for securely storing heavy data in parallel with the blockchain), so could only take the design so far and their work remained unfinished.

    You can view the marketplace for free, as it's built into the wallet. You don't need to have any Particl coins to "window shop".
2  Alternate cryptocurrencies / Altcoin Discussion / Re: Particl: a marketplace and and exchange on a blockcahin. on: October 17, 2021, 06:05:52 PM
Sound interesting!
The must-see project, I'll check it!

If you download and run the client - Particl Desktop v3 - it'll automatically start pulling item listings off the network and display them on the marketplace GUI once it's synchronised the blockchain. It normally takes about half an hour to syncronise.

Does anyone know if there is a marketplaces section on bitcointalk. Not for selling goods, but to talk about crypto related marketplaces?
3  Alternate cryptocurrencies / Altcoin Discussion / Re: what are some of the new projects we should keep eyes on it? on: October 17, 2021, 03:30:01 PM
I think what we need to pay attention to when a new project is released is the developer and the project Team, the goal is to see their quality, is it trustworthy or not. Then we also need to pay attention to the road map of a project that is being built. because whether or not a project is good depends on the concept that they proclaimed. the rest we can see whether registered or not in Coinmarketcap !!
I think this is what we need to pay attention to when launching a new project

Particl have just released an anonymous and trustless decentralised eBay, see my post here. Satoshi was trying to work out how to do this before he disappeared and these folks have figured it out.

    

It also lets you atomically swap coins between blockchains, not ERC20 tokens within ethereum, but say Monero for Bitcoin, in a totally trustless and secure way. I think this might be the first working atomic swap DEX.

    

It's been in development for nearly eight years and just launched last week. See Particl.io for more info.
4  Alternate cryptocurrencies / Altcoin Discussion / Re: Particl: a marketplace and and exchange on a blockchain. [Its also an Alt coin] on: October 17, 2021, 03:03:50 PM
I usually use imgur...
...just change the "width" value...
...Usually, I only add the exact width to image(s)...

Thanks! I've managed to resize the images now and added an image of the exchange and GUI too.
5  Alternate cryptocurrencies / Altcoin Discussion / Re: Particl: a marketplace and and exchange on a blockchain. [Its also an Alt coin] on: October 17, 2021, 08:22:08 AM
I've been asked about the total number of Particl coins. There are currently around 11.5 million coins. There is no limit to how many will be created through staking. it has a set inflation rate each year. So not staking means your stash shrinks a little each year, so to speak.
6  Alternate cryptocurrencies / Altcoin Discussion / Re: Particl: a marketplace and and exchange on a blockcahin. on: October 15, 2021, 06:16:28 AM
Does anyone know how to resize images? I've looked at a simple machines forum wiki guide and been battling with the image size in the above post to no avail.
7  Alternate cryptocurrencies / Altcoin Discussion / Particl: eBay on a blockchain. [Its also an Altcoin] on: October 15, 2021, 06:12:02 AM
Just before Satoshi disappeared, he was working on a way to extended Bitcoin to create trustless decentralised marketplace on the blockcahin. After nearly eight years of development Particl Marketplace launched last week, it provides a decentralised marketplace built into a blockchain using smart contracts. The wallet provides an intuitive eBay style GUI.

ďI started implementing a marketplace feature earlier that facilitates offering things for sale and taking orders, it's only half done though.  A bit like e-bay but without auctions, just "buy now".  Among other things, it would make it easy for anyone to offer currency exchange.Ē
    - Satoshi Nakamoto, Apr 14, 2009

I'm not a member of the Particl team, but I have been following the project closely since c.2014 so I can provide my notes here as a starting place for other people's research and am happy to answer questions as best I can. Below are some of the key highlights as I see them.

Particl integrates a trustless decentralised marketplace into the Bitcoin blockchain source code. Particl provides an eBay and Amazon style marketplace inside its wallet software, allowing users to buy and sell natively with crypto via blockchain smart contracts.

    

A decentralised exchange has also been built on the Particl blockchain allowing exchange between all cryptocurrencies that support atomic swaps such as Bitcoin, Monero and Litecoin. Atomic swapping allows currencies to be swapped directly between separate blockchains. This exchange is currently in working beta. Later versions will allow users to pay for goods on the marketplace using currencies supported by the built in exchange.

    

The marketplace connects buyers and sellers directly, with no middle man. They are protected by Particlís decentralised smart contract escrow which makes scamming infeasible. It works in the following way:

Buyer makes payment for item plus a deposit into escrow (blockchain smart contract). The seller puts the same amount of deposit into escrow (the same blockchain smart contract). Seller ships item. If the buyer is happy with what they received, they release the escrow and the buyer gets back their deposit, the seller their deposit plus payment. If the buyer is not happy then they talk with the seller to try and resolve their issue. Only the seller can release the escrow. An escrow contact has no expiration period to give the buyer and seller time to resolve any disputes. The current escrow for the beta launch is 100% of the item price; in future this will be adjustable between 100-0%. See diagram for more datils.

    

Unlike centralised cryptocurrency marketplaces and websites, Particl cannot disappear with your funds, so your money is always safe. Everything goes via the blockchain. No third party needs to handle funds.

Buyers and sellers do not need to sign up - signing up is the same as creating a bitcoin address - so no personal information is submitted to the network. The marketplaces can also be viewed for free simply by downloading and running the wallet.

Security is paramount: all communication between users is encrypted. The software does not permit things like hyperlinks outside of the client as this could reveal a users IP. There is shortly to be native Tor and I believe I2P support is in the works too.

Anything can be listed, but socially inappropriate items can be voted off by users, using their coin balance as voting weight.

Particl is an evolution in privacy coin technology. Like Monero it uses ring signatures, but provides more; 24 vs 11. It also provides blinding.

Non-transaction data, such as images and text, are kept off the blockchain and sent via Particlís inbuilt encrypted messaging system instead. This protocol is based on bitmessage. To avoid spam users pay for the duration they want each of these messages to persist on the network. This is more scalable for data intensive dApps than something like Ethereum.

To stake Particl coins, users need to lock-up their coins for a period of time. Furthermore each time an item is purchased and shipped, the decentralized escrow locks the payment, plus a deposit from the buyer and seller, into escrow. Both these activities take a lot of coins out of circulation. So Particlís price should rise with actual use as the same amount of Particl coins chase more and more goods on the marketplace.

Since its beta launch in August 2019 Particl has facilitated tens of thousands of listings and thousands of sales.

Particl is open source and closely mirrors the Bitcoin code base and remains current with all its latest upgrades such as taproot.

Particl was a top 20 crypto in 2015 for around two years. It has remained a top 10 crypto for code commits since 2015 - https://www.cryptomiso.com/.

Particl is a dApp platform, the decentralized marketplace is just the first app.

You can download the software here: https://particl.io/downloads/

Links for more information:

Website: https://particl.io/
Team: https://particl.io/team/
Linked In: https://linkedin.com/company/particl/
Github: https://github.com/particl
Twitter: https://twitter.com/ParticlProject
Forum: https://particl.community
Reddit: https://www.reddit.com/r/Particl
Instagram: https://www.instagram.com/particl.official
Youtube: https://www.youtube.com/c/particl
Facebook: https://www.facebook.com/ParticlProject
BitcoinTalk: https://bitcointalk.org/index.php?topic=5227333
8  Economy / Trading Discussion / Could this be a new way trade crypto? Particl Decentralised Marketplace on: September 30, 2021, 06:53:27 AM
Iíve been following the Particl decentralised marketplace project for about seven years now, I think its taken so long because it's a truly decentralised technology. Yesterday it launched its decentralised marketplace - https://particl.io/downloads/.

How is this relevant to trading? Because the beta of the marketplace which ran a while back for around a year ended up being used as a decentralised exchange of sorts. Coins were being traded for other coins via fixed listings.

I know availability of lesser coins on exchanges has been an issues for the community, so this could provide another way to buy and sell, and because itís truly decentralised there is an argument itís more secure and reliable than a centralised exchange. There is no middle man, no website, the eBay style interface is built into the wallet and all transactions are protected by Mutually Assured Destruction (MAD) escrow. that insures buyers and sellers don't get scammed.

The entire Particl decentralised marketplace runs off of the native currency called PART and all trades have to go via PART, so for example an ETH to BTC trade would need to go via the following route ETH > PART then PART > BTC.

A listing for XCH coin appeared yesterday when it lanced. You can also buy and sell more every day items like the stuff you would find on eBay and Amazon, and other things like NFTs. If you want to see what's for sale on the marketplace you need to install and run the wallet.
9  Bitcoin / Development & Technical Discussion / Re: Won't Bitcoin block size be resolved through simple market economics? on: April 15, 2021, 10:44:12 AM
What I can glean from the responses is that it's not worth increasing the number of TXs per bock because this will significantly increase rate of growth of the Bitcoin blockchain.
10  Economy / Collectibles / Re: Microsoul 1BTC - first coin made - what is the private key format? on: January 05, 2021, 11:13:25 AM
Wow. Please let us know if the incompetent idiot (AKA Scammer Cheesy) even replies, and good luck. Roll Eyes

He did and he was very genuine and helpful. I think if he had any malice he'd have disappeared a long time ago. I'd personally rather forgive than hold a grudge.
11  Bitcoin / Development & Technical Discussion / Won't Bitcoin block size be resolved through simple market economics? on: December 18, 2020, 09:55:28 AM
I know this question gets asked a lot, but in this post I want to discuss my answer, not the question. I give this answer so often to so many people that I just wanted to run it past the community to check it seems sane.

Q: "Bitcoin can only handle 7 transactions a second. Surely this makes it unusable for day to day transactions?"

A: "The block size is one of the main components limiting transaction throughput. Miners receive a reward for each block: this reward is composed of a subsidy, originally 50BTC per block, currently 6.25BTC per block; and fees for each transaction paid for by individual users. Over time the reward will become so insignificant that the miners will collectively be incentivised to focus on increasing the amount of fees they receive for each block, encouraging them to reach consensus on increasing the number of transactions in each block. This has already happened with segregated witness; other techniques will no doubt be implemented to further increase this, possibly even just increasing the permitted data size of a block. So I believe this problem will just solve itself over time and isn't something to worry about long term."

So is the answer I'm giving feasible or has the code base ossified so much this type of change is simply off the table?

I always tell people that Bitcoin is still bootstrapping; it won't have matured until its around 130 years old. So any conversations about its usability at this point is a getting ahead of its self. Like a cake that's still baking if you try to eat it now you'll find the middle is still liquid and raw. I think also the idea something is architected more for the use of future generations than us sitting here now discussing it seems very alien to people.
12  Economy / Collectibles / Re: Microsoul 1BTC - first coin made - what is the private key format? on: December 14, 2020, 02:11:32 PM
Oh dear. I've PMed gravitate.
13  Economy / Collectibles / Re: Microsoul 1BTC - first coin made - what is the private key format? on: December 14, 2020, 01:57:57 PM
Is the microsoul website still up?
14  Economy / Collectibles / Re: Microsoul 1BTC - first coin made - what is the private key format? on: December 14, 2020, 01:54:45 PM
https://bitcointalk.org/index.php?topic=2136007.msg21600085#msg21600085


Edit - I wrote the correct private key down too. With my PBC coin I had to add a 5 to the front and reverse the final two letters of what was printed on the coin.


And according to the Big Yellow Book, was actually some kind of code, not key:



Ah, I scanned that exact page and it didn't go in. Thanks MJ!
15  Economy / Collectibles / Microsoul 1BTC - first coin made - what is the private key format? on: December 14, 2020, 10:58:31 AM
For the first coins issued by Microsoul, 1BTC denomination, does anyone know what the private key format is or where I can find out?
16  Economy / Collectibles / Re: 2013 peeled Titan Mint coins for sale - First ever edition 17 to 26 of 10,000 on: November 14, 2020, 12:22:56 PM
Pictures added.
17  Economy / Collectibles / Re: Peeled Titan mint coins for sale - First ever edition 17 to 26 of 10,000 on: November 12, 2020, 08:16:30 AM
Thank you for sharing the information. I did not know they produced 10000. What year the coin is? Are they silver? Please provide details along with picture. If you are unable to show pic just post the link someone will post the pic for you. thanks,

See the Titan Mint web page for info on the coin, the coin in question is the one that rolls in on their loading screen.

All the coins are from the very first batch ever made, minted 2013.
18  Economy / Collectibles / 2013 Titan Mint coins for sale - First ever edition 17 to 26 of 10,000 - peeled on: November 11, 2020, 09:37:01 PM
I am selling my titan mint coins which I have peeled. They are all 2FA. They are the very first batch of coins the Titan Mint produced, numbers 17 to 26 of 10,000. The holograms are still partially attached to each coin and the coins are untouched and in mint condition. Each comes with its original capsule and paper certificate.

Sample photos of the coins:







Please PM me if you are interested with an offer price.
19  Economy / Collectibles / Re: Advice on redeeming a Lealana Monero private key on: September 11, 2020, 07:10:48 AM
So this worked according to your instructions. The only issue I hit is that the Lealana '1' and 'L' is a very similar character so if anyone is having issues with recovering their funds from the coin's encoded private key make sure you check for this.

Other tools I came across that might be useful here (but I did not personally use): https://glezen.org/Base64Decoder.html
20  Economy / Collectibles / Re: Casascius and Lealana Physical Bitcoins & Litecoins for sale on: September 05, 2020, 07:19:28 AM
Bump - prices updated.
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