The first ever off-chain atomic swap between Bitcoin and Litecoin has been successfully completed, according to news sources. The swap is particularly important because it was made off chain, meaning that ownership of the coins changed hands, but there was no transaction recorded on either Blockchain. According to Litecoin founder Charlie Lee:
“Previous atomic swaps that I have done were on-chain, and had the on-chain limitations of slow [transactions] and high transaction fees. Off-chain atomic swaps are significantly better. They are instant, [have] low fees, and better protect one’s privacy.”
This system would allow users willing to connect between chains the opportunity to pass cryptocurrencies without having to wait for the on-chain confirmations, and with far lower fees. This connection would produce incredibly faster transactions for Bitcoin, as well as a simple but elegant solution to the ongoing scaling debate among enthusiasts.
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The other substantial benefit to such transactions is that they are effectively fully anonymous. Because they leave no trace on either chain but are complete, they are untraceable in any form. Such privacy is something that is being pursued by ZK options on the Ethereum chain.
Cointelegraph has reached out to Konstantin Gladych, the CEO of Changelly for his opinion on the swap technology:
“Changelly is a centralized exchange processing large transactions for the fairest rates on the market. We are keen on the idea of atomic off-chain swaps as a new evolution step providing risk-free p2p OTC deals. However, it cannot completely replace the existing ecosystem so far.”
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Top Sites – Buy Bitcoin & Cryptocurrency:
| Rank | Site | Location +currency | Buy with… |
Score |
|---|---|---|---|---|
| 1 |  |
London, UK
USD
|
CFD
+ bank transf.
+ card
+ paypal
+ webmoney
|
9.85 |
| 2 |  |
San Fran, USA
USD EUR GBP
|
+ bank transf.
|
9.80 |
| 3 |  |
Limassol, Cyprus
USD EUR
|
CFD
+ bank transf.
+ card
|
9.75 |
| 4 |  |
local
all currencies
|
+ paypal
+ bank transf.
|
9.55 |
| 5 |  |
London, UK
USD EUR GBP RUB
|
+ bank transf.
+ Ethereum
|
9.50 |
| 6 | 
cryptocurrency exchange
|
Prague, Czech Rep.
35+ crypto pairs
|
 CRYPTO- CURRENCY + credit card
|
8.65 |
| 8 | 
cryptocurrency exchange
|
Shanghai, China
30+ crypto pairs
|
CRYPTO- CURRENCY |
8.60 |
| 9 | 
cryptocurrency exchange
|
Copenhagen, Denmark
25+ crypto pairs
|
CRYPTO- CURRENCY |
8.30 |
source: Cointelegraph.com