Currently, there is not possible to search for transactions in Monero Blockchain online associated with a given address and viewkey. This is a serious problem, especially for people using paper wallets, since they cant verying if they recived founds whitch they expect.
In this example, this problem is address by development of an online hiden service where users can input anonymouskt their address and viewkey to search for associated transaction. The example not only shows how to use Monero C++ libraries, but also demonstrates how to use:
- crow - C++ micro web framework
- lmdb++ - C++ wrapper for the LMDB
- mstch - C++ {{mustache}} templates
- rapidjson - C++ JSON parser/generator
Tor users:
Non tor users, can try tor proxy, e.g.,
The Onion Monero Viewer is still under development and testing. So not everything can work as expected and the viewer can be offline from time to time, when changes are being made to it.
The key features of the Onion Monero Viewer are:
- available as a hidden service,
- no web analytics trackers, no images, co cookies
- open sourced,
- made fully in C++,
Everything here was done and tested using Monero 0.9.4 on Ubuntu 16.04 x86_64.
Instruction for Monero 0.9 compilation and Monero headers and libraries setup are as shown here:
The Onion Explorer uses Monero C++ libraries and headers. Also some functionality in the Explorer for mempool is achieved through patching the Monero deamon. Instructions how to download Monero source files, apply a patch, 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)
Most unique search abilities of the Onion Viewer are achieved through using a custom lmdb database constructed based on the Monero blockchain. The reason for the custom database is that Monero's own lmdb database has limited search abilities.
Instruction how to compile the lmdbcpp-monero are provided here:
The custom database is rather big, 12GB now, and it must be running alongside Monero deamon so that it keeps updating itself with new information from new blocks as they are added to the blockchain.
For these reasons, its use is optional. However, without it, some searches wont be possible, e.g., searching for key images, output and tx public keys, encrypted payments id.
Once the Monero is compiled and setup, the viewer can be downloaded and compiled as follows:
# download the source code
git clone https://github.com/moneroexamples/onion-monero-viewer.git
# enter the downloaded sourced code folder
cd onion-monero-viewer
# create the makefile
cmake .
# compile
makeWhen compilation finishes executable xmrviewer should be created.
To run it:
./xmrviewer
Example output:
[mwo@arch onion-monero-viewer]$ ./xmrviewer
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 8081Go to your browser: http://127.0.0.1:8081
For testing of the viewer, one can use official address and viewkey of the Monero, i.e.,
- Address: 44AFFq5kSiGBoZ4NMDwYtN18obc8AemS33DBLWs3H7otXft3XjrpDtQGv7SqSsaBYBb98uNbr2VBBEt7f2wfn3RVGQBEP3A
- Viewkey: f359631075708155cc3d92a32b75a7d02a5dcf27756707b47a2b31b21c389501
Monero forum donation,
- Address: 45ttEikQEZWN1m7VxaVN9rjQkpSdmpGZ82GwUps66neQ1PqbQMno4wMY8F5jiDt2GoHzCtMwa7PDPJUJYb1GYrMP4CwAwNp
- Viewkey: c9347bc1e101eab46d3a6532c5b6066e925f499b47d285d5720e6a6f4cc4350c
Old Monero donation address:
- Address: 46BeWrHpwXmHDpDEUmZBWZfoQpdc6HaERCNmx1pEYL2rAcuwufPN9rXHHtyUA4QVy66qeFQkn6sfK8aHYjA3jk3o1Bv16em
- Viewkey: e422831985c9205238ef84daf6805526c14d96fd7b059fe68c7ab98e495e5703
Other examples can be found on github. Please know that some of the examples/repositories are not finished and may not work as intended.
Constructive criticism, code and website edits are always good. They can be made through github.