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* [bitcoin-dev] Using a storage engine without UTXO-index
@ 2017-04-06 22:12 Tomas
  2017-04-06 23:38 ` Eric Voskuil
                   ` (3 more replies)
  0 siblings, 4 replies; 35+ messages in thread
From: Tomas @ 2017-04-06 22:12 UTC (permalink / raw)
  To: Bitcoin Dev

I have been working on a bitcoin implementation that uses a different
approach to indexing for verifying the order of transactions. Instead of
using an index of unspent outputs, double spends are verified by using a
spend-tree where spends are scanned against spent outputs instead of
unspent outputs.

This allows for much better concurrency, as not only blocks, but also
individual inputs can be verified fully in parallel.

I explain the approach at https://bitcrust.org, source code is available
at https://github.com/tomasvdw/bitcrust

I am sharing this not only to ask for your feedback, but also to call
for a clear separation of protocol and implementations: As this
solution, reversing the costs of outputs and inputs, seems to have
excellent performance characteristics (as shown in the test results),
updates to the protocol addressing the UTXO growth, might not be worth
considering *protocol improvements* and it might be best to address
these concerns as implementation details.

Kind regards,
Tomas van der Wansem
tomas@bitcrust.org
Bitcrust


^ permalink raw reply	[flat|nested] 35+ messages in thread

end of thread, other threads:[~2017-04-11 10:04 UTC | newest]

Thread overview: 35+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-04-06 22:12 [bitcoin-dev] Using a storage engine without UTXO-index Tomas
2017-04-06 23:38 ` Eric Voskuil
2017-04-07  0:17   ` Tomas
2017-04-08 22:37     ` Eric Voskuil
2017-04-08 23:58       ` Tomas
2017-04-11  1:44         ` Eric Voskuil
2017-04-11  8:43           ` Tomas
2017-04-11  9:41             ` Eric Voskuil
2017-04-11 10:04               ` Tomas
     [not found] ` <CAAS2fgTEMCkDWdhCWt1EsUrnt3+Z_8m+Y1PTsff5Rc0CBnCKWQ@mail.gmail.com>
2017-04-07  0:48   ` Tomas
2017-04-07  1:09     ` Gregory Maxwell
2017-04-07  1:29       ` Tomas
2017-04-07 18:52         ` Tom Harding
2017-04-07 19:42           ` Gregory Maxwell
2017-04-08 18:27             ` Tom Harding
2017-04-08 19:23               ` Tomas
2017-04-07  7:55 ` Marcos mayorga
2017-04-07  8:47   ` Tomas
2017-04-07 14:14     ` Greg Sanders
2017-04-07 16:02       ` Tomas
2017-04-07 18:18 ` Gregory Maxwell
2017-04-07 18:39   ` Bram Cohen
2017-04-07 19:55     ` Eric Voskuil
2017-04-07 21:44       ` Tomas
2017-04-07 23:51         ` Eric Voskuil
2017-04-07 21:14     ` Tomas
2017-04-08  0:44       ` Gregory Maxwell
2017-04-08  7:28         ` Tomas
2017-04-08 19:23           ` Johnson Lau
2017-04-08 19:56             ` Tomas
2017-04-08 20:21               ` Johnson Lau
2017-04-08 20:42                 ` Tomas
2017-04-08 22:12                 ` Gregory Maxwell
2017-04-08 22:34                   ` Tomas
2017-04-08 21:22     ` Troy Benjegerdes

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