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README.md |
Onion Monero Blockchain Explorer
Currently available Monero blockchain explorer websites have several limitations which are of special importance to privacy-oriented users:
- they use JavaScript,
- have images which might be used for cookieless tracking,
- track users activates through google analytics,
- are closed sourced,
- are not available as hidden services,
- provide only basic search capabilities,
- do not support Monero testnet
In this example, these limitations are addressed by development of an Onion Monero Blockchain Explorer. The example not only shows how to use Monero C++ libraries, but also demonstrates how to use:
- crow - C++ micro web framework
- mstch - C++ {{mustache}} templates
- json - JSON for Modern C++
- date - C++ date and time library
- fmt - Small, safe and fast string formatting library
Addresses
Tor users:
Clearnet versions:
- http://139.162.32.245:8081/ - bleeding edge, no https.
- https://xmrchain.net/ - https enabled.
- https://monerohash.com/explorer/ - nice looking one, https enabled.
- http://blox.supportxmr.com/ - no https.
- https://explorer.xmr.my/ - https enabled.
Clearnet testnet Monero version:
- http://139.162.32.245:8082/ - bleeding edge, no https.
- https://testnet.xmrchain.com/ - https enabled.
i2p users (main Monero network) - down for now:
Clearnet testnet priority nodes:
- 23.228.193.90 - /opt/monero/monerod --testnet --add-priority-node 23.228.193.90
- 62.210.104.109 - /opt/monero/monerod --testnet --add-priority-node 62.210.104.109
Monero tor nodes:
- 7kome2dwgre4wll6.onion -
/opt/monero/monero-wallet-cli --daemon-host 7kome2dwgre4wll6.onion
- o6nvntbo3qsn36dm.onion -
/opt/monero/monero-wallet-cli --daemon-host o6nvntbo3qsn36dm.onion
Onion Monero Blockchain Explorer features
The key features of the Onion Monero Blockchain Explorer are:
- no javascript, no cookies, no web analytics trackers, no images,
- open sourced,
- made fully in C++,
- the only explorer showing encrypted payments ID,
- the only explorer showing ring signatures,
- the only explorer showing transaction extra field,
- the only explorer showing public components of Monero addresses,
- the only explorer that can show which outputs and mixins belong to the given Monero address and viewkey,
- the only explorer that can be used to prove that you send Monero to someone,
- the only explorer showing detailed information about mixins, such as, mixins' age, timescale, mixin of mixins,
- the only explorer showing number of amount output indices,
- the only explorer supporting Monero testnet network,
- the only explorer providing tx checker and pusher for online pushing of transactions,
- the only explorer allowing to inspect encrypted key images file and output files.
- the only explorer able to estimate possible spendings based on address and viewkey.
Prerequisite
Instruction for Monero 0.10.3 compilation and Monero headers and libraries setup are as shown here:
- Compile Monero on Ubuntu 16.04 x64
- lmdbcpp-monero (optional)
Compile and run the explorer
Monero headers and libraries setup
The Onion Explorer uses Monero C++ libraries and headers. Instructions how to download source files and compile Monero, setup header and library files are presented here:
- https://github.com/moneroexamples/compile-monero-09-on-ubuntu-16-04 (Ubuntu 16.04)
- https://github.com/moneroexamples/compile-monero-09-on-arch-linux (Arch Linux)
Compile and run
Once the Monero is compiled and setup, the explorer can be downloaded and compiled as follows:
# download the source code
git clone https://github.com/moneroexamples/onion-monero-blockchain-explorer.git
# enter the downloaded sourced code folder
cd onion-monero-blockchain-explorer
# make ~/Downloads forlder if you dont have it
# time zone library that explorer is using, puts there
# its database of time zone offsets
# make a build folder and enter it
mkdir build && cd build
# create the makefile
cmake ..
# compile
make
When compilation finishes executable xmrblocks
should be created.
To run it:
./xmrblocks
Example output:
[mwo@arch onion-monero-blockchain-explorer]$ ./xmrblocks
2016-May-28 10:04:49.160280 Blockchain initialized. last block: 1056761, d0.h0.m12.s47 time ago, current difficulty: 1517857750
(2016-05-28 02:04:49) [INFO ] Crow/0.1 server is running, local port 8081
Go to your browser: http://127.0.0.1:8081
The explorer's command line options
./xmrblocks -h
-h [ --help ] [=arg(=1)] (=0) produce help message
-t [ --testnet ] [=arg(=1)] (=0) use testnet blockchain
--enable-pusher [=arg(=1)] (=0) enable pushing signed tx
--enable-key-image-checker [=arg(=1)] (=0)
enable key images file checker
--enable-output-key-checker [=arg(=1)] (=0)
enable outputs key file checker
--enable-autorefresh-option [=arg(=1)] (=0)
enable users to have the index page on
autorefresh
-p [ --port ] arg (=8081) default port
-b [ --bc-path ] arg path to lmdb blockchain
--ssl-crt-file arg A path to crt file for ssl (https)
functionality
--ssl-key-file arg A path to key file for ssl (https)
functionality
-d [ --deamon-url ] arg (=http:://127.0.0.1:18081)
monero address string
Enable SSL (https)
By default, the explorer does not use ssl. But it has such a functionality.
As an example, you can generate your own ssl certificates as follows:
cd /tmp # example folder
openssl genrsa -out server.key 1024
openssl req -new -key server.key -out server.csr
openssl x509 -req -days 3650 -in server.csr -signkey server.key -out server.crt
Having the crt
and key
files, run xmrblocks
in the following way:
./xmrblocks --ssl-crt-file=/tmp/server.crt --ssl-key-file=/tmp/server.key
Note: Because we generated our own certificate, modern browsers will complain about it as they cant verify the signatures against any third party. So probably for any practical use need to have properly issued ssl certificates.
Enable transaction pusher
By default, the tx pusher is disabled. The pushing will not work, but tx checking and inspecting will.
To enable pushing the txs, use flag --enable-pusher
, e.g.:
./xmrblocks --enable-pusher
Note: There has been a number of issues with compatibility of tx's binary data between different Monero versions and operating systems. Unless you are using latest development version of Monero and the explorer has been compiled against the lastest version, pushing and checking unsigined and signed tx data might not work due to incompatibilities in binary data.
Example screenshot
Other Monero examples
Other examples can be found on github. Please know that some of the examples/repositories are not finished and may not work as intended.
How can you help?
Constructive criticism, code and website edits are always good. They can be made through github.