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Author Topic: [ANN][GAP] Gapcoin - Prime Gap Search - New Math Algo - CPU / GPU - Zero Premine  (Read 286315 times)
gjhiggins
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June 01, 2020, 10:07:22 AM
Merited by xandry (2)
 #2021

Zip archive of Gapcoin datadir (blocks/*, chainstate/* and peers.dat) as of midnight 30th May 2021: https://minkiz.co/noodlings/gap/gapchain-snapshot.zip (4.9Gb).

Cheers

Graham
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June 01, 2020, 10:24:44 AM
Last edit: June 01, 2020, 11:41:24 AM by BitcoinFX
 #2022

Zip archive of Gapcoin datadir (blocks/*, chainstate/* and peers.dat) as of midnight 30th May 2021: https://minkiz.co/noodlings/gap/gapchain-snapshot.zip (4.9Gb).

Cheers

Graham


~ midnight 30th May 2020

Proof that Graham is from the future ... 2024 here we come !

SG-1

N+1

...

I will add the snapshot to https://gapcoin.club asap.

Cheers!

 Cool

"Bitcoin OG" 1JXFXUBGs2ZtEDAQMdZ3tkCKo38nT2XSEp | Bitcoin logo™ Enforcer? | Bitcoin is BTC | CSW is NOT Satoshi Nakamoto | I Mine BTC, LTC, ZEC, XMR and GAP | BTC on Tor addnodes Project | Media enquiries : Wu Ming | Enjoy The Money Machine | "You cannot compete with Open Source" and "Cryptography != Banana" | BSV and BCH are COUNTERFEIT.
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June 01, 2020, 09:22:50 PM
 #2023

Zip archive of Gapcoin datadir (blocks/*, chainstate/* and peers.dat) as of midnight 30th May 2021: https://minkiz.co/noodlings/gap/gapchain-snapshot.zip (4.9Gb).

~ midnight 30th May 2020

The years reel by so quickly they've become a bit of a blur, sigh. As some wag on Facebook commented: the way 2020's going ... what's next, Godzilla?

Cheers

Graham
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June 02, 2020, 07:49:28 AM
Last edit: June 02, 2020, 08:40:50 AM by BitcoinFX
Merited by xandry (2)
 #2024

All stable on my side

Herewith, current information for pool mining Gapcoin ...

The original and 'final' CPU/GPU miner release(s) for Gapcoin by j0nn9 (i.e. crt-rev5 and crt-rev5.1) were somewhat experimental, they are perhaps unstable for more modern graphics cards and require continued development.

Those binary releases are perhaps best suited for RPC / solo mining (and testing), before a new GPU miner and separate (or combined) CRT miner can be developed and released. Compiling these releases on linux from the original sources is also rather 'tricky' at present and the binaries need testing on => Ubuntu 18.04 LTS etc.,

Judging by pool difficulty and network difficulty I'm guessing all users are currently CPU mining only, this of course may change quite quickly !

...

CPU Pool mining set-up guide:

Pool: https://gap.suprnova.cc

Linux:

The optimal 'working' binary release for CPU mining in the pool is currently gapminer-rev4. I've tested this release on Ubuntu 18.04 LTS and the dependencies are met and it's very stable.

- https://github.com/gapcoin-project/GapMiner/releases

At present, I will suggest set-up as follows:

Code:
wget github.com/gapcoin/GapMiner/releases/download/gapminer-rev4/linux.zip

Code:
sudo apt-get install p7zip-full

Code:
7z x linux.zip

Running gapminer-cpu (requires pool registration and worker set-up):

Code:
linux/64/cpu/gapminer-cpu -o gap.suprnova.cc -p 2433 -u YOURusername.YOURworker -x YOURpassword --retries -1 -t 1 --stratum

N.B. Where -t is the number of CPU cores (threads) to mine with.

DONE !

IMPORTANT : Please read how to action a CPU limit of upto 75% max. before you start Mining on a cloud server! (also useful for desktop mining upto say 97-99% max. to help preserve your hardware and/or productivity!) ...

- https://bitcointalk.org/index.php?topic=822498.msg40934201#msg40934201

N.B. No requirement to run gapcoind for pool mining here of course ... however the PID your looking for instead in top is: gapminer-cpu

...

Windows Desktop:

See: https://github.com/gapcoin/GapMiner/releases/

Download: https://github.com/gapcoin/GapMiner/releases/download/gapminer-rev4/windows.zip

"GapMiner revision 4: supports CPU / GPU mining.
Changes: rewrote stratum network stuff to remove boost dependencies and to fix windows support."


Currently untested. If someone would like to confim that cpu mining on windows is still working in the pool with gapminer-rev4 that would be great!

TBH I see absolutely no reason why it wouldn't ...

Simply unpack the windows.zip , then navigate to locate gapminer-cpu.exe , move it to an appropriate folder on your drive, second mouse button click > Send to (create shortcut) to create a shortcut on your desktop (or drop and drag). Now second mouse button click the shortcut link > Properties and append to the Target: line ...

Code:
-o gap.suprnova.cc -p 2433 -u YOURusername.YOURworker -x YOURpassword --retries -1 -t 1 --stratum

Apply and run gapminer-cpu.exe via the Shortcut.

N.B. Again, where -t is the number of CPU cores (threads) to mine with.

DONE !

N.B. or alternatively the .bat method should work just fine!

Good luck!

 Cool

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June 04, 2020, 04:16:41 AM
 #2025

gpu miner support only amd cards ?
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June 04, 2020, 12:06:02 PM
 #2026

gpu miner support only amd cards ?

That does seem to be the case according to a comment in the source:

https://github.com/gapcoin-project/GapMiner/blob/gpu-miner/gpu/procs.cl#L18

// Generated for AMD OpenCL compiler, do not edit!

Cheers

Graham
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June 05, 2020, 12:51:05 PM
Merited by MagicByt3 (2)
 #2027

In an attempt to shed some light on the effects of using different values for the "shift" parameter, I did some data processing of Gapcoin record merits and the Gapcoin blockchain, relating merits to shifts and other data. The results are available in an OpenOffice spreadsheet (249Kb): https://mega.nz/file/OEsyVAxb#xdodexNJ9ZbyH5gTM370GCuCrzE2crZZ90lBhNulv3I if you wish to create charts similar to the following - in which merit is plotted against shift:



and raw csv format (152Kb) if preferred: https://mega.nz/file/3FsyBI6Q#F6r59XEZmhURBZ_du_8QcnFYmKNm3Sh-VsHEo_wKE4s in which the columns are: block, date, difficulty, shift, adder, gap size, merit, number of digits in the prime and the prime itself.

It's of interest because the consequence of using the default parameters unchanged is that gaps are tested for a limited range over and over again, with new records usually making only incremental improvements to existing records rather than establishing entirely new record gaps (fwiw, the record merit used a shift of 32). Changing the mining parameters changes the locus of the gap search to ranges which haven't been so intensively already mined. The chart shows the gaps in the gaps, so to speak.

The raw data for the analysis was extracted from the blockchain and formatted as SQL inserts for reading into SQLite3. The (77Mb) zipped file of SQL inserts is available at https://mega.nz/file/CI0XVaKa#AqtWAdhmTaVrOW1DSPjHWxMt6T4V0j6ETTqsfN792d0 and there is a zipped SQLite3 database file (1446Mb) ready for loading directly into the SQLite3 DB Browser available at https://mega.nz/file/XZ0zUKxZ#dPz3OBpyulEcWAkeKwMd78lDqv278jncfUubSgp2ddw

The raw data for the record gaps is available in CSV format (8.1Mb) from the Prime Gap List project's web site git repo on github - https://github.com/primegap-list-project/primegap-list-project.github.io/blob/master/_data/allgaps.csv and in SQL insert format (12.6Mb) from the project's main repos: https://github.com/primegap-list-project/prime-gap-list/blob/master/allgaps.sql

Cheers

Goggins

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June 05, 2020, 02:42:53 PM
 #2028

It's a beautiful thing!

...snip...

It's of interest because the consequence of using the default parameters unchanged is that gaps are tested for a limited range over and over again, with new records usually making only incremental improvements to existing records rather than establishing entirely new record gaps (fwiw, the record merit used a shift of 32). Changing the mining parameters changes the locus of the gap search to ranges which haven't been so intensively already mined. The chart shows the gaps in the gaps, so to speak.

...snip...

I've solo mined in the 896 shift range and found it to be quite optimal, but this chart really does help to show the true mathematical potential here.

Pooled mining enabled across the shift ranges, combined with a new solid GPU / CRT miner is easily going to fill the gaps in the gaps and produce lots of new MERIT record prime gaps, protocol and PoW 'as-is'.

Certainly both the cryptocurrency community and mathematics community should begin to take notice when we actually break gapcoins own record?

...

4hero - Star Chasers
- https://www.youtube.com/watch?v=COoQF2ne7C0&list=OLAK5uy_k7a9yo2dm3WC7GNK2VYPuonReJGb5uNfo&index=11

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June 06, 2020, 01:29:10 PM
 #2029

I think I would hook an asic to it. With it, I will put bitcoinfx punk on his knees. He swanks being a solo guy, well good for him. Maybe your a soloist in every other aspect of your life, namely self-stimulation of ur genitals and fulfillment of other needs, but Im not that guy. I know that no one dared to put an asic on it heretofore. I will be the first humming internet guy to end this coins life cycle.
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June 07, 2020, 02:12:26 AM
 #2030

I think I would hook an asic to it. ... I know that no one dared to put an asic on it heretofore. I will be the first humming internet guy to end this coins life cycle.
Utter nonsense. You've simply revealed your profound ignorance and exposed yourself as an offensive troll. ASIC is an acronym of "Application-specific integrated circuit", in this instance the specific application is not generating hashes but of testing for primality, an application for which no ASIC implementation exists.

Cheers

Graham

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June 07, 2020, 08:39:43 AM
Last edit: November 07, 2020, 03:47:22 PM by BitcoinFX
Merited by MagicByt3 (2)
 #2031

 Cheesy  Indeed. ... no luck mining with your s9 then ? [citation's needed]

Herewith, CRT solo mining (RPC) set examples for rev 5.0 and rev 5.1 ...

64
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 64 --crt crt/crt-22m-64s.txt --threads 2 --fermat-threads 1 --sieve-primes 150000
96
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 96 --crt crt/crt-22m-96s.txt --threads 2 --fermat-threads 1 --sieve-primes 150000
128
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 128 --crt crt/crt-22m-128s.txt --threads 2 --fermat-threads 1 --sieve-primes 140000
160
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 160 --crt crt/crt-22m-160s.txt --threads 2 --fermat-threads 1 --sieve-primes 140000
192
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 192 --crt crt/crt-22m-192s.txt --threads 2 --fermat-threads 1 --sieve-primes 130000
224
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 224 --crt crt/crt-22m-224s.txt --threads 2 --fermat-threads 1 --sieve-primes 130000
256
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 256 --crt crt/crt-22m-256s.txt --threads 2 --fermat-threads 1 --sieve-primes 130000
288
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 288 --crt crt/crt-22m-288s.txt --threads 2 --fermat-threads 1 --sieve-primes 130000
320
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 320 --crt crt/crt-22m-320s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
352
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 352 --crt crt/crt-22m-352s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
384
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 384 --crt crt/crt-22m-384s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
416
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 416 --crt crt/crt-22m-416s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
448
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 448 --crt crt/crt-22m-448s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
480
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 480 --crt crt/crt-22m-480s.txt --threads 2 --fermat-threads 1 --sieve-primes 120000
512
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 512 --crt crt/crt-22m-512s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
544
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 544 --crt crt/crt-22m-544s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
576
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 576 --crt crt/crt-22m-576s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
608
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 608 --crt crt/crt-22m-608s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
640
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 640 --crt crt/crt-22m-640s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
672
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 672 --crt crt/crt-22m-672s.txt --threads 2 --fermat-threads 1 --sieve-primes 110000
704
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 704 --crt crt/crt-22m-704s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
736
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 736 --crt crt/crt-22m-736s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
768
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 768 --crt crt/crt-22m-768s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
800
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 800 --crt crt/crt-22m-800s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
832
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 832 --crt crt/crt-22m-832s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
864
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 864 --crt crt/crt-22m-864s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
896
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 896 --crt crt/crt-22m-896s.txt --threads 2 --fermat-threads 1 --sieve-primes 100000
928
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 928 --crt crt/crt-22m-928s.txt --threads 2 --fermat-threads 1 --sieve-primes 90000
992
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 992 --crt crt/crt-22m-992s.txt --threads 2 --fermat-threads 1 --sieve-primes 90000
1024
Code:
-o http://127.0.0.1 -p 31397 -u YOURgapcoinRPC -x YOURgapcoinRPCpass --shift 1024 --crt crt/crt-22m-1024s.txt --threads 2 --fermat-threads 1 --sieve-primes 90000

N.B. sieve-primes values are unlikely to be optimal, although should increase performance above the 'default'.

Stratum's also a bit of a 'fixer upper'.

...

I've commenced mining in the 160, 256, 384 and 768 shifts.

...

gapcoin.conf RPC solo mining example ...

Code:
listen=1
daemon=1
server=1
port=31469
rpcallowip=127.0.0.1
rpcport=31397
rpcuser=YOURgapcoinRPCchangethis
rpcpassword=YOURgapcoinRPCpasschangethis
addnode=seed-jp.gapcoin.club:31469
addnode=seed-ca.gapcoin.club:31469

gapcoin.conf RPC solo mining TESTNET example ...

Code:
testnet=1
listen=1
daemon=1
server=1
port=19661
rpcallowip=127.0.0.1
rpcport=19609
rpcuser=YOURgapcoinRPCchangethis
rpcpassword=YOURgapcoinRPCpasschangethis
addnode=testnet-seed.gapcoin.network:19661
addnode=testnet.gapcoin.network:19661

...

Lena - Satellite ...
- https://youtu.be/7pL9vdpSvnY

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June 08, 2020, 12:31:35 PM
Merited by BitcoinFX (1)
 #2032


Currently untested. If someone would like to confim that cpu mining on windows is still working in the pool with gapminer-rev4 that would be great!


It's fine on Windows 7 32&64 bits.
It's fine on Windows 10 32&64 bits.
Smiley

Wizz_^
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June 08, 2020, 01:08:40 PM
 #2033


Currently untested. If someone would like to confirm that cpu mining on windows is still working in the pool with gapminer-rev4 that would be great!


It's fine on Windows 7 32&64 bits.
It's fine on Windows 10 32&64 bits.
Smiley

Champion !

...

Anyone digging out older AMD graphics hardware for testing the GPU miner releases ?

Remember that the sieve still runs on the CPU, so 4 cores min. approx. + 8GB RAM min. recommended.

 Cool

"Bitcoin OG" 1JXFXUBGs2ZtEDAQMdZ3tkCKo38nT2XSEp | Bitcoin logo™ Enforcer? | Bitcoin is BTC | CSW is NOT Satoshi Nakamoto | I Mine BTC, LTC, ZEC, XMR and GAP | BTC on Tor addnodes Project | Media enquiries : Wu Ming | Enjoy The Money Machine | "You cannot compete with Open Source" and "Cryptography != Banana" | BSV and BCH are COUNTERFEIT.
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June 13, 2020, 02:49:12 PM
 #2034


Currently untested. If someone would like to confirm that cpu mining on windows is still working in the pool with gapminer-rev4 that would be great!


It's fine on Windows 7 32&64 bits.
It's fine on Windows 10 32&64 bits.
Smiley

Champion !

...

Anyone digging out older AMD graphics hardware for testing the GPU miner releases ?

Remember that the sieve still runs on the CPU, so 4 cores min. approx. + 8GB RAM min. recommended.

 Cool

i have RX480, if i can say that is old card, miner v4 working perfect, on windows, and linux too.
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June 15, 2020, 03:06:13 PM
 #2035

Sunzi Suanjing
- https://en.wikipedia.org/wiki/Sunzi_Suanjing

Chinese remainder theorem
- https://en.wikipedia.org/wiki/Chinese_remainder_theorem

... " Encryption

Most implementations of RSA use the Chinese remainder theorem during signing of HTTPS certificates and during decryption.

The Chinese remainder theorem can also be used in secret sharing, which consists of distributing a set of shares among a group of people who, all together (but no one alone), can recover a certain secret from the given set of shares. Each of the shares is represented in a congruence, and the solution of the system of congruences using the Chinese remainder theorem is the secret to be recovered. Secret sharing using the Chinese remainder theorem uses, along with the Chinese remainder theorem, special sequences of integers that guarantee the impossibility of recovering the secret from a set of shares with less than a certain cardinality. " ...


Secret sharing using the Chinese remainder theorem
- https://en.wikipedia.org/wiki/Secret_sharing_using_the_Chinese_remainder_theorem

Using the Chinese remainder algorithm
- https://en.wikipedia.org/wiki/RSA_(cryptosystem)#Using_the_Chinese_remainder_algorithm

...

Gapcoin network difficulty rising, slowly ...

" ... hard as Chinese math ... "

SNAP! - Ooops Up
- https://youtu.be/O_C8-5L989k

 Grin

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June 15, 2020, 04:03:09 PM
Last edit: June 15, 2020, 04:15:49 PM by wizz13150
Merited by xandry (1)
 #2036


i have RX480, if i can say that is old card, miner v4 working perfect, on windows, and linux too.

Yep, it works with an old ATI Radeon X1900 XTX

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June 16, 2020, 09:52:35 AM
 #2037

Hi Mr. Higgins,

 OBJCXXLD gapcoin-qt
/usr/bin/ld: gapcoin_qt-bitcoin.o: undefined reference to symbol 'pthread_join@@GLIBC_2.2.5'
/usr/bin/ld: /lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[5]: *** [Makefile:1266: gapcoin-qt] Error 1

https://github.com/SIGBlockchain/project_aurum/pull/111


Trying to compile using Parrot OS 4.9

Thanks



Seems to compile fine using Deepin 20 and Linux Mint, but not Parrot OS. 



Can you give a little more details how the logic flow for the notary system.......thanks


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June 16, 2020, 04:08:31 PM
Last edit: June 17, 2020, 10:37:03 AM by BitcoinFX
 #2038

Hi Mr. Higgins,

 OBJCXXLD gapcoin-qt
/usr/bin/ld: gapcoin_qt-bitcoin.o: undefined reference to symbol 'pthread_join@@GLIBC_2.2.5'
/usr/bin/ld: /lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[5]: *** [Makefile:1266: gapcoin-qt] Error 1

https://github.com/SIGBlockchain/project_aurum/pull/111


Trying to compile using Parrot OS 4.9

Thanks

...snip...

What do these commands return in the Parrot OS 4.9 terminal  ?

Code:
sudo apt list --installed | grep -i libpthread

Code:
sudo apt list --installed | grep -i gcc

Code:
sudo apt list --installed | grep -i g++


Does exporting the flag(s) not solve the compile issue ? i.e.

export CXXFLAGS=-pthread

etc.,

Did you try installing toolkits ?

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June 17, 2020, 11:09:07 AM
 #2039

Hi Mr. Higgins,
Address your posts to the group, I'm not your personal tech support monkey.

Quote
/usr/bin/ld: /lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
I don't know why you are posting this to the group, a trivial search on "DSO missing from command line" produces the result: https://stackoverflow.com/questions/24096807/dso-missing-from-command-line which leads to a variety of suggestions for fixes.

Quote
Trying to compile using Parrot OS 4.9

Seems to compile fine using Deepin 20 and Linux Mint, but not Parrot OS. 
You erroneously presume that I feel obliged to provide support for arbitrary OS distros. I'll make it clear - if there's a general issue with a mainstream distro affecting a number of users then I might well be minded to help, if I can.

Quote
Can you give a little more details how the logic flow for the notary system.......thanks
Not really because I don't understand your question. Maybe these descriptions of creating an OP_RETURN transaction will help you:

https://bitcoin.stackexchange.com/questions/29554/explanation-of-what-an-op-return-transaction-looks-like
https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line/blob/master/06_5_Sending_a_Transaction_with_Data.md

Cheers

Graham
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June 17, 2020, 11:38:40 AM
 #2040

IME, to get the best chance of a positive outcome from a public appeal for help ...

1. Indicate which branch of the coin you are using (in this case, original 0.9.2, updated 0.9.3 or experimental 0.9.4)
2. Indicate which platform and OS version you are using.
3. Indicate the nature of the problem and any error messages that you are seeing.
4. Indicate the steps you have already taken to try and fix the problem.

Cheers

Graham
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