Hi Subhra,
thanks for your question.
> So as of now if we consider transfer of a file (may of few KB) then you
split it into several blocks and use atomic multi path payment whole using
the blocks for embedding with the preimage inorder to obtain payment.
> But it might be the case you may not have sufficient number of path to
transfer all the blocks at one go because of preimage size limitation of
256 bit (I didn't get the point that there is no limitation on data size,
can anyone explain that ?).
Yes. It needs many blocks and paths if large file.
But it has no problem because it can use the same path several times.
Of course it needs much money to transfer large file. But this is good
point in order to retain lightning network stable.
For DOS attack, OG AMP has the same problem. It might that recipient needs
a limit how many split blocks the recipient accept
> So may be you need several iteration and I presume thats what lightning
network will pitch in where we have several such microtransactions going on.
> What happens if it fails in an iteration ? So the recipient of the file
remains happy with the partial content ? Or will the payment be revoked
(not sure how) if recipient doesn't get the full content ?
This is about the DLAS-up protocol.
The protocol uses OG AMP so the payments and data transfers are revoked in
case that it fails.
Thanks,
Takaya Imai
2020年1月16日(木) 16:14 Subhra Mazumdar :
> Hello Takaya,
> I really liked the idea of data atomic swap mentioned over here.
> So as of now if we consider transfer of a file (may of few KB) then you
> split it into several blocks and use atomic multi path payment whole using
> the blocks for embedding with the preimage inorder to obtain payment. But
> it might be the case you may not have sufficient number of path to transfer
> all the blocks at one go because of preimage size limitation of 256 bit (I
> didn't get the point that there is no limitation on data size, can anyone
> explain that ?). So may be you need several iteration and I presume thats
> what lightning network will pitch in where we have several such
> microtransactions going on. What happens if it fails in an iteration ? So
> the recipient of the file remains happy with the partial content ? Or will
> the payment be revoked (not sure how) if recipient doesn't get the full
> content ?
>
> On Mon, Nov 11, 2019 at 6:29 AM Takaya Imai <
> takaya.i...@frontier-ptnrs.com> wrote:
>
>> Hi all,
>>
>> I propose Data Lightning Atomic Swap.
>> Anyone already have the same idea?
>>
>>
>> [Abstract]
>> This proposal is a way to swap data and lightning payment atomically.
>> It has two patterns, one is for a payer to swap data-download with
>> lightning payment to a payee (DLAS-down), the other is for a payer to swap
>> data-upload with lightning payment to a payee (DLAS-up).
>>
>> The data is embedded to preimage so sending and receiving the data need
>> lightning payment at the same time.
>>
>> -
>>
>> [Motivation]
>> Atomic Swaps among crypto currencies has various ways to implement
>> (on-chain to on-chain[1], on-chain to of-chain(Submarine Swap[2])). And
>> Atomic Swaps between data and crypto currencies are also proposed as a part
>> of TumbleBit mechanism[3], Storm mechanism[4] and so on.
>>
>> Recently Joost Jager proposed Instant messages with lightning onion
>> routing, whatsat[5], which use recent sphinx payload change[6]. This is
>> very awesome but not atomic with lightning payment.
>>
>> Atomic lightning mechanism for data is useful in use cases below.
>>
>> -
>>
>> [Pros & Cons]
>>
>> * DLAS-down
>> ** Pros
>> *** Atomic data download exchange with lightning payment
>> ** Cons
>> *** It needs better mechanism to expand data size
>>
>> * DLAS-up
>> ** Pros
>> *** Atomic data upload exchange with lightning payment
>> ** Cons
>> *** OG AMP[7] is needed to implement
>>
>> -
>>
>> [What I describe]
>> * A way to swap data with lightning payment atomically.
>>
>> -
>>
>> [What I do not describe]
>> * A way to detect that data is correct or not, namely zero knowledge
>> proof process.
>>
>> For example, probabilistic checkable proof like TumbleBit[3] proposed.
>> Just message as data is no problem because no need to check the message
>> is correct or not.
>>
>> * A way in case that different preimages are used in a payment route like
>> Multi-hop locks.
>>
>> -
>>
>> [Specification]
>>
>> Lightning Network(LN) has a mechanism about preimage like a brief image
&g
