Just to be clear, as long as the blockchain exists somebody with the skill can extract all the gaps?
Pretty much, yes. There's less technical effort involved in repeatedly polling the API and dumping the results in a database than it is to write a coin-specific block/chain parser.
And also was wondering that about the other math coins that are similarly neglected primecoin, riecoin and there are others whose names I forget. The problem with submitting them late is only that the work might get done twice?
According to
DOACC (which I ceased updating in Sept 2015), there are four algos using some aspect of prime number calculation to implement a proof-of-work hash but only three are pertinent to this context:
* Prime 6 -
Bytecent - closed source, uninteresting. Self-description asserts that the PoW, whilst
using primes, makes no contribution to the maths at all.
* Cunningham primes:
Pnut,
CDNCoin,
Bernankecoin,
Primecoin,
Datacoin* Prime gap finding as Proof of Work:
Gapcoin* Prime constellations:
RiecoinOnly Primecoin, Datacoin, Riecoin and Gapcoin have active networks, the others are in stasis.
But basically, yes, something
can be done about establishing a means of collating and reporting any reportable results...
In a not-entirely-unrelated strand of investigative work, I've been taking advantage of the blockchain being structured as an acyclic directed graph and
mapping the JSON output (incl. transactions) to RDF, stored, presented and made available for querying via SPARQL, courtesy of
Fuseki. ATM, it's animated via a Pyramid (Python web app framework) prototype web app (which I have whimsically and irritatingly named
ACME “A Cryptocurrency Metadata Explorer”) which, in essence, offers a rather tractable and readily-extensible block explorer.
I have a couple of
pre-production instances implemented for off-the-beaten-track alts, Slimcoin (
http://tessier.bel-epa.com:5064/) and Datacoin (
http://tessier.bel-epa.com:5059/). I hope you'll forgive screenshots - I've yet to upgrade the hardware to support the additional demand on compute resources, so the response time varies from “slow”, through “glacial” to “never” (so, if you're actually trying the links, please be patient ...
Landing page for Slimcoin showing blockchain stats, summary details of the last few blocks and a chart showing the current ratio of Slimcoin tripartite minting:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2Fxk9E1Vy.png&t=665&c=1HzFS02pGaJRzA)
Datacoin version:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FGQdGO2C.png&t=665&c=5j39VjH8w5YR8A)
Datacoin's API also offers:
listprimerecords <primechain length> [primechain type]and
listtopprimes <primechain length> [primechain type]From which I can create a presentation (atm, crudely dumped into a single page until I figure out some meaningful UI approach).
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FY8gzfKq.png&t=665&c=DLsTXKAVRuUR5Q)
Gapcoin's API offers:
listbestprimes amount (min merit)and
listprimerecords meritwhich will also permit of a more accessible presentation.
Progress on Gapcoin ACME ...
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FDbJNCZs.png&t=665&c=Gblu8OfSG11EBg)
The landing page polls the RPC API for the info (on each page reload, it's pre-production).
I've made some progress on mapping the Gapcoin blockchain to RDF ...
gjh@chrome /opt/acme/gapcoin-acme/acme $ ./scripts/blocknotify-catchup.sh
/opt/acme/gapcoin-acme/acme/scripts /opt/acme/gapcoin-acme/acme
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E
======================================================================
ERROR: test_catchup (__main__.Test_BlockNotifyCatchUp)
----------------------------------------------------------------------
Traceback (most recent call last):
File "blocknotify-catchup.py", line 33, in test_catchup
fp.write(self.g.serialize(format="nt").decode('utf-8'))
File "/opt/acme/gapcoin-acme/lib/python3.5/site-packages/rdflib-4.2.2-py3.5.egg/rdflib/graph.py", line 943, in serialize
serializer.serialize(stream, base=base, encoding=encoding, **args)
File "/opt/acme/gapcoin-acme/lib/python3.5/site-packages/rdflib-4.2.2-py3.5.egg/rdflib/plugins/serializers/nt.py", line 32, in serialize
stream.write(_nt_row(triple).encode(self.encoding, "_rdflib_nt_escape"))
MemoryError
----------------------------------------------------------------------
Ran 1 test in 103949.692s
FAILED (errors=1)
My mistake,
of course 32Gb of RAM is insufficient, the mapping results in 20 to 30 triples per block, * 690,000 = “many” (and 103949.692s / 3600 = 28.874914444444446 hours)
I'll just set it to map 100k blocks at a time.
Oh, ACME also shows txs ...
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FN4KKvtO.png&t=665&c=5PYtS1OHtTP9PQ)
and presents a (cyclopean) view of the network ...
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fi.imgur.com%2FFSmvETp.png&t=665&c=9zveUIZ8mKN58w)
Seasons' Greetings. More details after the w/end.
Cheers
Graham