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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2028618 times)
gyverlb
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June 10, 2013, 04:34:42 AM
 #5701

Quote
reaching 3 to 5% additional fee income
Any way to calculate this?

Ideally: run another node with appropriate settings, parse the result of getblocktemplate to compute the fees over an extended period.

My estimation is less accurate than that: it's based on a relatively medium sample size (several dozens with these settings over the past days). This can only illustrate what you could get these past days (and maybe detect a trend too). If one large pool upgrades its configuration and starts confirming the transactions currently waiting this number might go down. On the other side if one service starts to generate large numbers of transactions with fees just below what most of the miners accept (accepting a delay until a minority of miners confirm it or the txs age enough), this number will go up.

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June 10, 2013, 11:30:23 AM
 #5702

re:  Punishing share for 'Block-stale detected!, etc.

I get a lot of orphans when this happens... because my bitcoind is too fast?

I went to several other pools (my other one in Florida, OVH in Canada, p2pool.org, some others) and they all had my share listed, which means that it was accepted and got orphaned later.

This occuring after several:

2013-06-09 21:34:35.132788 Skipping from block 4bc4be449a7de0c01cb29a9d661045a19393dea2cefc2e26b to block 9b14c16ea0d67eda77564adca4de0ac3e84b1efbd8cfb5adce!
2013-06-09 21:34:36.831062 Punishing share for 'Block-stale detected! 4bc4be449a7de0c01cb29a9d661045a19393dea2cefc2e26b < 9b14c16ea0d67eda77564adca4de0ac3e84b1efbd8cfb5adce'! Jumping from 2ba6238a to e8ee1640!
2013-06-09 21:34:36.917817 Punishing share for 'Block-stale detected! 4bc4be449a7de0c01cb29a9d661045a19393dea2cefc2e26b < 9b14c16ea0d67eda77564adca4de0ac3e84b1efbd8cfb5adce'! Jumping from 2ba6238a to e8ee1640!
2013-06-09 21:34:36.920728 Punishing share for 'Block-stale detected! 4bc4be449a7de0c01cb29a9d661045a19393dea2cefc2e26b < 9b14c16ea0d67eda77564adca4de0ac3e84b1efbd8cfb5adce'! Jumping from 2ba6238a to e8ee1640!
2013-06-09 21:34:40.064626 GOT SHARE! Brusthonin 32cdc8e4 prev e8ee1640 age 2.69s

... and then that share was orphaned.  It seems to me like if I modified the source to turn off the whole 'punishing share' stuff, I'd get less orphans?

If I understand correctly, P2Pool doesn't want to build a share on top of one it knows to be stale (built on a previous Bitcoin block).

It may be because your bitcoind has better connections to the Bitcoin P2P network and learns of new blocks before others: if the majority of the network is slower it will not see the share as a "Block-stale" as you do and not punish it, refusing your share in the relatively rare case when you submit one just after this "Block-stale". You could lose a bit of income this way, but it should not be noticeable (this can only affect you during the ~5s a block needs to fully propagates the Bitcoin network, which is less than 1% of the block interval: in the worst case you shouldn't lose more than 0.5% of efficiency).

If you modified the source to turn off the 'punishing share', you would find your node at the opposite end of the spectrum: it would build on a potential stales and make orphans too.

You can find out if it's a problem by computing the number of shares you found just after a block that were orphaned and the number of shares that were accepted. If you have enough logs/hashrate you can get a meaningful sample (one hundred shares generated just after blocks would be adequate) and find if you get more orphans in this population than the orphans you get over the same time period. This would make sure there is some imbalance and I think we could even find out if reversing the logic would benefit you in your case (I'm a bit tired and going to bed, but I think it's simple probabilities).

yeah, like this

2013-06-10 06:10:29.076187 Punishing share for 'Block-stale detected! 4d2f83a096d4f50ce5fccfd3d81fb97988ad9eac42ddfad5b6 < 1c3c0e8358b6fe20f6d09bfeef1f9aa0fc897ad634c8da56aa'! Jumping from 5538fa58 to
 be8220df!
2013-06-10 06:10:31.197403 GOT SHARE! Brusthonin 10823d52 prev be8220df age 1.81s
2013-06-10 06:10:33.597242  Shares: 33 (1 orphan, 4 dead) Stale rate: ~15.2% (6-31%) Efficiency: ~104.6% (85-116%) Current payout: 0.3049 BTC
2013-06-10 06:10:43.603981  Shares: 33 (2 orphan, 4 dead) Stale rate: ~18.2% (8-35%) Efficiency: ~100.9% (80-113%) Current payout: 0.3017 BTC

that just happened, again

oh, here is what it looked like from my a different node:

2013-06-10 06:10:29.383634 Skipping from block 4d2f83a096d4f50ce5fccfd3d81fb97988ad9eac42ddfad5b6 to block 1c3c0e8358b6fe20f6d09bfeef1f9aa0fc897ad634c8da56aa!
2013-06-10 06:10:30.688724 Punishing share for 'Block-stale detected! 4d2f83a096d4f50ce5fccfd3d81fb97988ad9eac42ddfad5b6 < 1c3c0e8358b6fe20f6d09bfeef1f9aa0fc897ad634c8da56aa'! Jumping from 5538fa58 to
 be8220df!
2013-06-10 06:10:35.396229 P2Pool: 17360 shares in chain (17364 verified/17364 total) Peers: 64 (8 incoming)
2013-06-10 06:10:35.396380  Local: 0H/s in last 0.0 seconds Local dead on arrival: Huh Expected time to share: Huh
2013-06-10 06:10:35.396506  Shares: 0 (0 orphan, 0 dead) Stale rate: Huh Efficiency: Huh Current payout: 0.3049 BTC
2013-06-10 06:10:35.396555  Pool: 736GH/s Stale rate: 18.9% Expected time to block: 1.1 days

nobody mining on it though, so doesn't show reports of new work.  the US node runs slower since it's on a crappy dual xeon and only using 8 cores.  oh, you can see how it did log my share as valid though, since the payout increased to 0.3049

the times:

06/10/2013_06:56:34:620911792 (US)
06/10/2013_06:56:34:634211668 (Germany)


Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
zvs
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June 10, 2013, 12:03:16 PM
 #5703

the one before the block and the one after the block are from 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV, though wouldn't that only matter if the next one in the chain was also 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV? (as mine would have been sandwiched between the two)

ed:  ok, so the real issue here would then be that 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV is operating at 2s latency or higher?   

all i can think of is that his client tossed out my share as being invalid, then he got another share and his node broadcast that share, and for some reason, my share got replaced by his.  that should only happen if he had gotten another one after that though, eh?  is there some other explanation?   because that could be abused

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
rav3n_pl
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June 10, 2013, 02:03:27 PM
 #5704

It is possible
Share chain time line:

s1
s2
s3
...
sa
sb<sa <-yours
sx<sa <-his
sy<sx <-his

and your sb is orphaned. Longer chain win.
If he get fast 2 shares he can orphan every other share.
Worst case scenario: every node got share, one node got 2 fast shares and orphan all other.

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gyverlb
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June 10, 2013, 05:33:04 PM
 #5705

the one before the block and the one after the block are from 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV, though wouldn't that only matter if the next one in the chain was also 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV? (as mine would have been sandwiched between the two)

ed:  ok, so the real issue here would then be that 185Kip6odGYs4eSHD6DYsWVDJBg2DNLfiV is operating at 2s latency or higher?

Yes, there are 2 other contributing factors:
  • a node always prefer mining on a share it just produced (this is a gamble which doesn't change the fairness, you either get 2 shares through or none),
  • according to the payouts this address controls nearly 10% of the P2Pool hashrate so it can orphan other shares more easily than the common node

all i can think of is that his client tossed out my share as being invalid, then he got another share and his node broadcast that share, and for some reason, my share got replaced by his.

The longer chain always win, so this behavior is expected. It shouldn't produce any unbalance though, there are more chances that the rest of the network (90% of the hashrate) will invalidate the "Block-stale" shares. 1 times out of 10 this address finds a share just before a block and 1 times out of 100 it should find the following share (some time they both will be valid, some time the first will be a Block-stale that makes it through thanks to the second and some time the Block-stale will be orphaned). So what you witnessed should happen every 100 blocks (16 hours or less given the rise of hashrate) on average (with these time scales you would need several weeks of data sampling to get a good enough sample of data).

P2pool tuning guide
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June 12, 2013, 03:21:13 AM
 #5706

Germany node:

2013-06-12 02:30:22 received block 00000000000000d9a40124da12aa3c7b26d7adad47eab9dc5cd95113d345a7b6
2013-06-12 02:30:24 received block 000000000000003eb0df7952601d567ed07a1683793c3aeb1c90fae6b378cfaf

that bitparking one came in late =p

US node:

2013-06-12 02:30:22 received block 000000000000003eb0df7952601d567ed07a1683793c3aeb1c90fae6b378cfaf
2013-06-12 02:30:26 received block 00000000000000d9a40124da12aa3c7b26d7adad47eab9dc5cd95113d345a7b6 from 5.9.24.81:25861
2013-06-12 02:30:27 received block 00000000000000d9a40124da12aa3c7b26d7adad47eab9dc5cd95113d345a7b6 from 127.0.0.1:14265

that p2pool one came in late, and was even sent faster from Germany than from my local p2pool

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
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June 12, 2013, 08:28:07 AM
 #5707

So jalapeno p2pool yes or no?

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gyverlb
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June 12, 2013, 09:35:35 AM
 #5708

So jalapeno p2pool yes or no?

No (see my guide for why).

P2pool tuning guide
Trade BTC for €/$ at bitcoin.de (referral), it's cheaper and faster (acts as escrow and lets the buyers do bank transfers).
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June 12, 2013, 09:38:32 AM
 #5709

Damn I'm going to have to leave unless I can make cgminer use only bfl on second instance.

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centove
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June 12, 2013, 12:51:52 PM
 #5710

So jalapeno p2pool yes or no?

No (see my guide for why).
What about if you load balance between p2pool and a traditional pool?

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June 13, 2013, 12:53:10 AM
 #5711

does p2pool work with the usb block erupters (asic)?

daemondazz
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June 13, 2013, 01:14:51 AM
 #5712

does p2pool work with the usb block erupters (asic)?

Yes, I'm currently doing this.

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freshzive
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June 13, 2013, 06:05:00 AM
 #5713

does p2pool work with the usb block erupters (asic)?

Yes, I'm currently doing this.

What flags? I'm getting super high rejects.

EDIT: Nevermind, I think that was just went I first started mining for whatever reason.

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June 13, 2013, 06:51:02 AM
 #5714

With cgminer I'm currently using:

Code:
--icarus-options 115200:1:1 --icarus-timing 3.0=100 -S /dev/ttyUSB0

Power is currently off at home, so I can't check the current reject rate.

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June 13, 2013, 08:52:44 AM
 #5715

Hi there,

I have some problems connecting slush's stratum proxy to p2pool. The pool is up and running fine. When I start the proxy, I get the following output:

Code:
> ./mining_proxy.py -o localhost -p 9332 -gp 8341 -v
2013-06-13 10:47:38,023 DEBUG stats logger.get_logger # Logging initialized
2013-06-13 10:47:38,030 DEBUG protocol logger.get_logger # Logging initialized
2013-06-13 10:47:38,030 DEBUG socket_transport logger.get_logger # Logging initialized
2013-06-13 10:47:38,050 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,051 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,051 INFO proxy jobs.<module> # C extension for midstate not available. Using default implementation instead.
2013-06-13 10:47:38,051 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,051 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,052 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,052 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,052 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,052 DEBUG proxy logger.get_logger # Logging initialized
2013-06-13 10:47:38,060 ERROR proxy mining_proxy.main # Stratum host/port autodetection failed
Traceback (most recent call last):
  File "./mining_proxy.py", line 178, in main
    new_host = (yield utils.detect_stratum(args.host, args.port))
  File "/usr/local/lib/python2.7/dist-packages/Twisted-13.0.0-py2.7-linux-x86_64.egg/twisted/internet/defer.py", line 1070, in _inlineCallbacks
    result = g.send(result)
  File "/home/macdschie/src/stratum-mining-proxy/mining_libs/utils.py", line 69, in detect_stratum
    header = f.response_headers.get('x-stratum', None)[0]
TypeError: 'NoneType' object has no attribute '__getitem__'
2013-06-13 10:47:38,060 WARNING proxy mining_proxy.main # Stratum proxy version: 1.5.2
2013-06-13 10:47:38,062 WARNING proxy mining_proxy.test_update # Checking for updates...
2013-06-13 10:47:38,242 WARNING proxy mining_proxy.main # Trying to connect to Stratum pool at localhost:9332
2013-06-13 10:47:38,245 INFO stats stats.print_stats # 1 peers connected, state changed 1 times
2013-06-13 10:47:38,245 DEBUG protocol protocol.connectionMade # Connected 127.0.0.1
2013-06-13 10:47:38,245 DEBUG protocol protocol.connectionMade # Resuming connection: []
2013-06-13 10:47:38,245 INFO proxy mining_proxy.on_connect # Connected to Stratum pool at localhost:9332
2013-06-13 10:47:38,245 INFO proxy mining_proxy.on_connect # Subscribing for mining jobs
2013-06-13 10:47:38,245 DEBUG protocol protocol.writeJsonRequest # < {"params": [], "id": 1, "method": "mining.subscribe"}
2013-06-13 10:47:38,248 DEBUG protocol protocol.lineReceived # > {u'result': [[u'mining.notify', u'ae6812eb4cd7735a302a8a9dd95cf71f'], u'', 2], u'jsonrpc': u'2.0', u'id': 1, u'error': None}
2013-06-13 10:47:38,250 WARNING proxy mining_proxy.main # -----------------------------------------------------------------------
2013-06-13 10:47:38,251 WARNING proxy mining_proxy.main # PROXY IS LISTENING ON ALL IPs ON PORT 3333 (stratum) AND 8341 (getwork)
2013-06-13 10:47:38,251 WARNING proxy mining_proxy.main # -----------------------------------------------------------------------
2013-06-13 10:47:38,251 DEBUG protocol protocol.lineReceived # > {u'jsonrpc': u'2.0', u'params': [0.9999847412109375], u'method': u'mining.set_difficulty', u'id': 158037711}
2013-06-13 10:47:38,251 INFO proxy client_service.handle_event # Setting new difficulty: 0.999984741211
2013-06-13 10:47:38,251 DEBUG protocol protocol.writeJsonResponse # < {"error": null, "id": 158037711, "result": null}
2013-06-13 10:47:38,252 INFO proxy mining_proxy.on_disconnect # Disconnected from Stratum pool at localhost:9332
2013-06-13 10:47:38,252 INFO stats stats.print_stats # 0 peers connected, state changed 1 times
2013-06-13 10:47:38,252 DEBUG socket_transport socket_transport.clientConnectionLost # [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.
]
2013-06-13 10:47:40,618 INFO stats stats.print_stats # 1 peers connected, state changed 1 times
2013-06-13 10:47:40,618 DEBUG protocol protocol.connectionMade # Connected 127.0.0.1
2013-06-13 10:47:40,618 DEBUG protocol protocol.connectionMade # Resuming connection: []
2013-06-13 10:47:40,618 INFO proxy mining_proxy.on_connect # Connected to Stratum pool at localhost:9332
2013-06-13 10:47:40,618 INFO proxy mining_proxy.on_connect # Subscribing for mining jobs
2013-06-13 10:47:40,619 DEBUG protocol protocol.writeJsonRequest # < {"params": [], "id": 1, "method": "mining.subscribe"}
2013-06-13 10:47:40,621 DEBUG protocol protocol.lineReceived # > {u'result': [[u'mining.notify', u'ae6812eb4cd7735a302a8a9dd95cf71f'], u'', 2], u'jsonrpc': u'2.0', u'id': 1, u'error': None}
2013-06-13 10:47:40,621 DEBUG protocol protocol.lineReceived # > {u'jsonrpc': u'2.0', u'params': [0.9999847412109375], u'method': u'mining.set_difficulty', u'id': 650029787}
2013-06-13 10:47:40,621 INFO proxy client_service.handle_event # Setting new difficulty: 0.999984741211
2013-06-13 10:47:40,621 DEBUG protocol protocol.writeJsonResponse # < {"error": null, "id": 650029787, "result": null}
2013-06-13 10:47:40,622 INFO proxy mining_proxy.on_disconnect # Disconnected from Stratum pool at localhost:9332
2013-06-13 10:47:40,622 INFO stats stats.print_stats # 0 peers connected, state changed 1 times
2013-06-13 10:47:40,622 DEBUG socket_transport socket_transport.clientConnectionLost # [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.
]

The last few lines repeat over and over again: the proxy tries to connect to the pool, exchanges some parameters and disconnects. I cannot find any output regarding the connection attempts in the p2pool logs.

When I start the proxy with other pools, it works fine, Also the traceback at the beginning (TypeError: 'NoneType' object has no attribute '__getitem__') only appears with p2pool.

Has anybody any clue what's going on there?
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June 13, 2013, 09:16:13 AM
 #5716

It is described, you need use forrstv version of stratum for startum-proxy.
You should also compile mindsatate extension.

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June 13, 2013, 11:30:47 AM
 #5717

It is described, you need use forrstv version of stratum for startum-proxy.
You should also compile mindsatate extension.

Where can I get this description? In the forum, I found nothing so far regrding this matter. Where can I get this forrstv version of stratum?

And what is the mindsatate extension and how do I compile it?

Thanks for any insight here...
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June 13, 2013, 11:38:34 AM
 #5718

It is described, you need use forrstv version of stratum for startum-proxy.
You should also compile mindsatate extension.

Where can I get this description? In the forum, I found nothing so far regrding this matter. Where can I get this forrstv version of stratum?

And what is the mindsatate extension and how do I compile it?

Thanks for any insight here...

Here?

https://github.com/forrestv/stratum

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June 13, 2013, 01:28:52 PM
 #5719

They had a patch a couple pages earlier

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June 13, 2013, 02:31:15 PM
 #5720

Hey guys. I recently setup a P2Pool node for Bitcoins and I was wondering how to put a fee.
I know that I have to use the -f parameter, but where do the bitcoins go?
How can I be sure that the fee is working correctly?

Thanks and sorry for my noobness.

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