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README.md

Ryo Blockchain Explorer

Forked from Onion Monero Blockchain Explorer

Full featured Ryo blockchain explorer for privacy-oriented users:

  • Does not use JavaScript,
  • Does not have images which might be used for cookieless tracking,
  • Does not track users activates through google analytics,
  • Open source,
  • Supports Ryo testnet nor stagenet networks,
  • Full featured JSON API.

Libraries:

  • crow - C++ micro web framework
  • mstch - C++ {{mustache}} templates
  • json - JSON for Modern C++
  • fmt - Small, safe and fast string formatting library

Explorer hosts

Ryo Blockchain Explorer features

The key features of the Ryo Blockchain Explorer are:

  • no cookies, no web analytics trackers, no images,
  • by default no JavaScript, but can be enabled for client side decoding and proving transactions,
  • open sourced,
  • made fully in C++,
  • showing encrypted payments ID,
  • showing ring signatures,
  • showing transaction extra field,
  • showing public components of Ryo addresses,
  • decoding which outputs and mixins belong to the given Ryo address and viewkey,
  • can prove that you send Ryo to someone,
  • detailed information about ring members, such as, their age, timescale and their ring sizes,
  • showing number of amount output indices,
  • support Ryo testnet and stagnet networks,
  • tx checker and pusher for online pushing of transactions,
  • estimate possible spendings based on address and viewkey,
  • can provide total amount of all miner fees,
  • decoding encrypted payment id,
  • decoding outputs and proving txs sent to sub-address.

Compilation on Ubuntu 16.04/18.04

Compile latest Ryo development version

Download and compile recent Ryo into your home folder:

# first install ryo dependecines
sudo apt update

sudo apt install build-essential cmake pkg-config libboost-all-dev libssl-dev libzmq3-dev libunbound-dev libsodium-dev libminiupnpc-dev libunwind8-dev liblzma-dev libreadline6-dev libldns-dev libexpat1-dev doxygen graphviz libpcsclite-dev

# go to home folder
cd ~

git clone --recursive https://github.com/ryo-currency/ryo-currency.git

cd ryo-currency/

make
Compile and run the explorer

Once the Ryo is compiled, the explorer can be downloaded and compiled as follows:

# go to home folder if still in ~/ryo-currency
cd ~

# download the source code
git clone https://github.com/ryo-currency/ryo-blockchain-explorer.git

# enter the downloaded sourced code folder
cd ryo-blockchain-explorer

# make a build folder and enter it
mkdir build && cd build

# create the makefile
cmake -DMONERO_DIR=~/ryo-currency ..

# also can build with ASAN (sanitizers), for example
# cmake -DSANITIZE_ADDRESS=On ..

# compile
make

To run it:

./xmrblocks -b /home/user/.ryo/lmdb02/

Example output:

user@arch:~/ryo-blockchain-explorer/build$ ./xmrblocks -b /home/user/.ryo/lmdb02
Staring in non-ssl mode
(2018-07-27 01:06:02) [INFO    ] Crow/0.1 server is running at 127.0.0.1:8081 using 4 threads

Go to your browser: http://127.0.0.1:8081

The explorer's command line options

xmrblocks, Ryo Blockchain Explorer:
  -h [ --help ] [=arg(=1)] (=0)         produce help message
  -t [ --testnet ] [=arg(=1)] (=0)      use testnet blockchain
  -s [ --stagenet ] [=arg(=1)] (=0)     use stagenet blockchain
  --enable-pusher [=arg(=1)] (=0)       enable signed transaction pusher
  --enable-mixin-details [=arg(=1)] (=0)
                                        enable mixin details for key images,
                                        e.g., timescale, mixin of mixins, in tx
                                        context
  --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-json-api [=arg(=1)] (=1)     enable JSON REST api
  --enable-tx-cache [=arg(=1)] (=0)     enable caching of transaction details
  --show-cache-times [=arg(=1)] (=0)    show times of getting data from cache
                                        vs no cache
  --enable-block-cache [=arg(=1)] (=0)  enable caching of block details
  --enable-js [=arg(=1)] (=0)           enable checking outputs and proving txs
                                        using JavaScript on client side
  --enable-autorefresh-option [=arg(=1)] (=0)
                                        enable users to have the index page on
                                        autorefresh
  --enable-emission-monitor [=arg(=1)] (=0)
                                        enable Ryo total emission monitoring
                                        thread
  -p [ --port ] arg (=8081)             default explorer port
  --testnet-url arg                     you can specify testnet url, if you run
                                        it on mainnet or stagenet. link will
                                        show on front page to testnet explorer
  --stagenet-url arg                    you can specify stagenet url, if you
                                        run it on mainnet or testnet. link will
                                        show on front page to stagenet explorer
  --mainnet-url arg                     you can specify mainnet url, if you run
                                        it on testnet or stagenet. link will
                                        show on front page to mainnet explorer
  --no-blocks-on-index arg (=10)        number of last blocks to be shown on
                                        index page
  --mempool-info-timeout arg (=5000)    maximum time, in milliseconds, to wait
                                        for mempool data for the front page
  --mempool-refresh-time arg (=5)       time, in seconds, for each refresh of
                                        mempool state
  -b [ --bc-path ] arg                  path to lmdb folder of the blockchain,
                                        e.g., ~/.ryo/lmdb02
  --ssl-crt-file arg                    path to crt file for ssl (https)
                                        functionality
  --ssl-key-file arg                    path to key file for ssl (https)
                                        functionality
  -d [ --deamon-url ] arg (=http:://127.0.0.1:12211)
                                        Ryo deamon url

Enable Ryo emission

Obtaining current Ryo emission amount is not straight forward. Thus, by default it is disabled. To enable it use --enable-emission-monitor flag, e.g.,

xmrblocks --enable-emission-monitor

This flag will enable emission monitoring thread. When started, the thread will initially scan the entire blockchain, and calculate the cumulative emission based on each block. Since it is a separate thread, the explorer will work as usual during this time. Every 10000 blocks, the thread will save current emission in a file, by default, in ~/.ryo/lmdb/emission_amount.txt. For testnet or stagenet networks, it is ~/.ryo/testnet/lmdb/emission_amount.txt or ~/.ryo/stagenet/lmdb/emission_amount.txt. This file is used so that we don't need to rescan entire blockchain whenever the explorer is restarted. When the explorer restarts, the thread will first check if ~/.ryo/lmdb/emission_amount.txt is present, read its values, and continue from there if possible. Subsequently, only the initial use of the tread is time consuming. Once the thread scans the entire blockchain, it updates the emission amount using new blocks as they come. Since the explorer writes this file, there can be only one instance of it running for mainnet, testnet and stagenet. Thus, for example, you cant have two explorers for mainnet running at the same time, as they will be trying to write and read the same file at the same time, leading to unexpected results. Off course having one instance for mainnet and one instance for testnet is fine, as they write to different files.

When the emission monitor is enabled, information about current emission of coinbase and fees is displayed on the front page, e.g., :

Ryo emission (fees) is 14485540.430 (52545.373) as of 1313448 block

The values given, can be checked using Ryo daemon's print_coinbase_tx_sum command. For example, for the above example: print_coinbase_tx_sum 0 1313449.

To disable the monitor, simply restart the explorer without --enable-emission-monitor flag.

Note: The pre-mined coins have been frozen/burned in commit c3a3cb6/ blockchain_db/blockchain_db.cpp#L250-L258 and a modification has been made to the explorer to remove 8,700,000 coins from circulation.

Enable JavaScript for decoding proving transactions

By default, decoding and proving tx's outputs are done on the server side. To do this on the client side (private view and tx keys are not send to the server) JavaScript-based decoding can be enabled:

xmrblocks --enable-js

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 can't verify the signatures against any third party. So probably for any practical use need to have properly issued ssl certificates. Alternatively, use an SSL terminator such as nginx.

JSON API

The explorer has JSON api. For the API, it uses conventions defined by JSend. By default the api is disabled. To enable it, use --enable-json-api flag, e.g.,

./xmrblocks --enable-json-api

api/transaction/<tx_hash>

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/transaction/4307e5619b29dcc1d9cdf4a52b3d0717bcbab0efc06d88fb79a1e0e33594e6ec"

Partial results shown:

{
   "data":{
      "block_height":156844,
      "coinbase":true,
      "confirmations":4,
      "current_height":156848,
      "extra":"0190c6a55fe6d77033f225291b36d22b700264d9c3f7c3648516f73f6470216015021039303031000000020000001049d4e900",
      "inputs":null,
      "mixin":0,
      "outputs":[
         {  
            "amount":41978500000,
            "public_key":"9935ac366ebd6fb6aee84581d9027dd0498ff6761a470bfaa8e48ff429788e22"
         }
      ],
      "payment_id":"",
      "payment_id8":"",
      "rct_type":0,
      "timestamp":1532649166,
      "timestamp_utc":"2018-07-26 23:52:46",
      "tx_fee":0,
      "tx_hash":"4307e5619b29dcc1d9cdf4a52b3d0717bcbab0efc06d88fb79a1e0e33594e6ec",
      "tx_size":102,
      "tx_version":3,
      "xmr_inputs":0,
      "xmr_outputs":41978500000
   },
   "status":"success"
}

api/transactions

Transactions in last 25 blocks

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/transactions"

Partial results shown:

{
   "data":{
      "blocks":[
         {
            "age":"00:05:41",
            "hash":"e3ff8c52516b8389888ee742d7f18448e3760199560f24ebd80092e46019fa9c",
            "height":156848,
            "size":28268.0,
            "timestamp":1532649512,
            "timestamp_utc":"2018-07-26 23:58:32",
            "txs":[
               {
                  "coinbase":true,
                  "extra":"01c9417029a41208a7142bf3a458935403328b34ca54a6c8b8a2ecf661043844000211af08e9cf0732704a000000000000000000",
                  "mixin":0,
                  "payment_id":"",
                  "payment_id8":"",
                  "rct_type":0,
                  "tx_fee":0,
                  "tx_hash":"5ace475abe36a574ee0d73e2c6aa5ba37473361934ed1b36981f17cbd8c6ecb4",
                  "tx_size":103,
                  "tx_version":3,
                  "xmr_inputs":0,
                  "xmr_outputs":41999000000
               },
               {
                  "coinbase":false,
                  "extra":"0181a8586bb9e3f98e04b80496632a9fea2afa59fb5e3c844b1ab28182f833e053",
                  "mixin":13,
                  "payment_id":"",
                  "payment_id8":"",
                  "rct_type":1,
                  "tx_fee":14000000,
                  "tx_hash":"242b5bca09edf614a6440a183c949934dbc1de82176bc2103141be7aed39ae32",
                  "tx_size":13586,
                  "tx_version":3,
                  "xmr_inputs":0,
                  "xmr_outputs":0
               },
               {
                  "coinbase":false,
                  "extra":"01622d73b89759ab0ba0d9fb211fd430ada1b5958eea6a14b5aa08f0cd0a1def1c",
                  "mixin":13,
                  "payment_id":"",
                  "payment_id8":"",
                  "rct_type":2,
                  "tx_fee":15000000,
                  "tx_hash":"01cf17ce53e132f1a987cb1b4dbfe51d13a163425d2202744c624166514746d9",
                  "tx_size":14579,
                  "tx_version":3,
                  "xmr_inputs":0,
                  "xmr_outputs":0
               }
            ]
         },
      ],
      "current_height":156849,
      "limit":25,
      "page":0,
      "total_page_no":6273
   },
   "status":"success"
}

api/transactions?page=<page_no>&limit=<tx_per_page>

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/transactions?page=2&limit=10"

Result analogical to the one above.


api/block/<block_number|block_hash>

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/block/150000"

Partial results shown:

{
   "data":{
      "block_height":150000,
      "current_height":156849,
      "hash":"debc58ac64fc8dc7ae35b0b8782ae33a0fe5855dc85930bc52b8fec3c1aee94a",
      "size":422899,
      "timestamp":1530990884,
      "timestamp_utc":"2018-07-07 19:14:44",
      "txs":[
         {
            "coinbase":true,
            "extra":"01e10420c2c5461ace855ffc8aa4a8256e784e873c325d71e798812ac90c35c19b020816d80f5c00000000",
            "mixin":0,
            "payment_id":"",
            "payment_id8":"",
            "rct_type":0,
            "tx_fee":0,
            "tx_hash":"2743243d3eb70b88baa26f70dd20c606470c5995de194ad9d0d4acf83d5ab761",
            "tx_size":94,
            "tx_version":3,
            "xmr_inputs":0,
            "xmr_outputs":42187500000
         },
      ]
   },
   "status":"success"
}

api/mempool

Return all txs in the mempool.

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/mempool"

Partial results shown:

{
   "data":{
      "limit":100000000,
      "page":0,
      "total_page_no":0,
      "txs":[
         {
            "coinbase":false,
            "extra":"0221000140bc7298830abaeb711b7214acb45c431db86c52da40f739fb6908f5dbe596019d29ab0f8b846889d1971d8d7915baab2b2335c4105bcdda1517544f2c4aa086",
            "mixin":13,
            "payment_id":"0140bc7298830abaeb711b7214acb45c431db86c52da40f739fb6908f5dbe596",
            "payment_id8":"",
            "rct_type":2,
            "timestamp":0,
            "timestamp_utc":"1970-01-01 00:00:00",
            "tx_fee":8000000,
            "tx_hash":"8f00e3746c7fe1e50bd72da69e00449b53586fbd793ed392a63c283b9fbf7c49",
            "tx_size":15584,
            "tx_version":3,
            "xmr_inputs":0,
            "xmr_outputs":0
         },
      ],
      "txs_no":3
   },
   "status":"success"
}

Limit of 100000000 is just default value above to ensure that all mempool txs are fetched if no specific limit given.


api/mempool?limit=<no_of_top_txs>

Return number of newest mempool txs, e.g., only 10.

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/mempool?limit=10"

Result analogical to the one above.


api/search/<block_number|tx_hash|block_hash>

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/search/150000"

Partial results shown:

{
   "data":{
      "block_height":150000,
      "current_height":156850,
      "hash":"debc58ac64fc8dc7ae35b0b8782ae33a0fe5855dc85930bc52b8fec3c1aee94a",
      "size":422899,
      "timestamp":1530990884,
      "timestamp_utc":"2018-07-07 19:14:44",
      "title":"block",
      "txs":[
         {
            "coinbase":true,
            "extra":"01e10420c2c5461ace855ffc8aa4a8256e784e873c325d71e798812ac90c35c19b020816d80f5c00000000",
            "mixin":0,
            "payment_id":"",
            "payment_id8":"",
            "rct_type":0,
            "tx_fee":0,
            "tx_hash":"2743243d3eb70b88baa26f70dd20c606470c5995de194ad9d0d4acf83d5ab761",
            "tx_size":94,
            "tx_version":3,
            "xmr_inputs":0,
            "xmr_outputs":42187500000
         },
      ]
   },
   "status":"success"
}

api/outputs?txhash=<tx_hash>&address=&viewkey=&txprove=<0|1>

For txprove=0 we check which outputs belong to given address and corresponding viewkey. For txprove=1 we use to prove to the recipient that we sent them founds. For this, we use recipient's address and our tx private key as a viewkey value, i.e., viewkey=<tx_private_key>

Checking outputs:

# we use here official Ryo project's donation address as an example
curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/outputs?txhash=17049bc5f2d9fbca1ce8dae443bbbbed2fc02f1ee003ffdd0571996905faa831&address=RYoLshW4LVn8TurtCrZzAd79FURtPHb93ATRYch3JpSDgvPRubk1VeEKg33sVifjASf7NzZtgQ6urVAAAKDKDtmUiDraNbdDvyk&viewkey=f359631075708155cc3d92a32b75a7d02a5dcf27756707b47a2b31b21c389501&txprove=0"
{
  "data": {
    "address": "RYoLshW4LVn8TurtCrZzAd79FURtPHb93ATRYch3JpSDgvPRubk1VeEKg33sVifjASf7NzZtgQ6urVAAAKDKDtmUiDraNbdDvyk",
    "outputs": [
      {
        "amount": 34980000000000,
        "match": true,
        "output_idx": 0,
        "output_pubkey": "35d7200229e725c2bce0da3a2f20ef0720d242ecf88bfcb71eff2025c2501fdb"
      },
      {
        "amount": 0,
        "match": false,
        "output_idx": 1,
        "output_pubkey": "44efccab9f9b42e83c12da7988785d6c4eb3ec6e7aa2ae1234e2f0f7cb9ed6dd"
      }
    ],
    "tx_hash": "17049bc5f2d9fbca1ce8dae443bbbbed2fc02f1ee003ffdd0571996905faa831",
    "tx_prove": false,
    "viewkey": "f359631075708155cc3d92a32b75a7d02a5dcf27756707b47a2b31b21c389501"
  },
  "status": "success"
}

Proving transfer:

We use recipient's address (i.e. not our address from which we sent Ryo to recipient). For the viewkey, we use tx_private_key (although the GET variable is still called viewkey) that we obtained by sending this txs.

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/outputs?txhash=94782a8c0aa8d8768afa0c040ef0544b63eb5148ca971a024ac402cad313d3b3&address=RYoLshW4LVn8TurtCrZzAd79FURtPHb93ATRYch3JpSDgvPRubk1VeEKg33sVifjASf7NzZtgQ6urVAAAKDKDtmUiDraNbdDvyk&viewkey=e94b5bfc599d2f741d6f07e3ab2a83f915e96fb374dfb2cd3dbe730e34ecb40b&txprove=1"
{
  "data": {
    "address": "RYoLshW4LVn8TurtCrZzAd79FURtPHb93ATRYch3JpSDgvPRubk1VeEKg33sVifjASf7NzZtgQ6urVAAAKDKDtmUiDraNbdDvyk",
    "outputs": [
      {
        "amount": 1000000000000,
        "match": true,
        "output_idx": 0,
        "output_pubkey": "c1bf4dd020b5f0ab70bd672d2f9e800ea7b8ab108b080825c1d6cfc0b7f7ee00"
      },
      {
        "amount": 0,
        "match": false,
        "output_idx": 1,
        "output_pubkey": "8c61fae6ada2a103565dfdd307c7145b2479ddb1dab1eaadfa6c34db65d189d5"
      }
    ],
    "tx_hash": "94782a8c0aa8d8768afa0c040ef0544b63eb5148ca971a024ac402cad313d3b3",
    "tx_prove": true,
    "viewkey": "e94b5bfc599d2f741d6f07e3ab2a83f915e96fb374dfb2cd3dbe730e34ecb40b"
  },
  "status": "success"
}

Result analogical to the one above.


api/networkinfo

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/networkinfo"
{
   "data":{
      "alt_blocks_count":9,
      "block_size_limit":491520,
      "block_size_median":14191,
      "cumulative_difficulty":284889040816739,
      "current":true,
      "current_hf_version":4,
      "difficulty":1085277793,
      "fee_per_kb":500000,
      "grey_peerlist_size":0,
      "hash_rate":4521990,
      "height":156853,
      "incoming_connections_count":12,
      "outgoing_connections_count":1,
      "stagenet":false,
      "start_time":1531440507,
      "status":true,
      "target":240,
      "target_height":156824,
      "testnet":false,
      "top_block_hash":"f0eb0e43acbd75c040279f847129573aa0d5e43e5d0a13f601ccf04c2fd689a3",
      "tx_count":433613,
      "tx_pool_size":1,
      "tx_pool_size_kbytes":15582,
      "white_peerlist_size":1000
   },
   "status":"success"
}

api/outputsblocks

Search for our outputs in last few blocks (up to 5 blocks), using provided address and viewkey.

curl  -w "\n" -X GET https://explorer.ryo-currency.com/api/outputsblocks?address=RYoLshW4LVn8TurtCrZzAd79FURtPHb93ATRYch3JpSDgvPRubk1VeEKg33sVifjASf7NzZtgQ6urVAAAKDKDtmUiDraNbdDvyk&viewkey=807079280293998634d66e745562edaaca45c0a75c8290603578b54e9397e90a&limit=5&mempool=1

Example result:

{
  "data": {
    "address": "0182d5be0f708cecf2b6f9889738bde5c930fad846d5b530e021afd1ae7e24a687ad50af3a5d38896655669079ad0163b4a369f6c852cc816dace5fc7792b72f",
    "height": 960526,
    "limit": "5",
    "mempool": true,
    "outputs": [
      {
        "amount": 33000000000000,
        "block_no": 0,
        "in_mempool": true,
        "output_idx": 1,
        "output_pubkey": "2417b24fc99b2cbd9459278b532b37f15eab6b09bbfc44f9d17e15cd25d5b44f",
        "payment_id": "",
        "tx_hash": "9233708004c51d15f44e86ac1a3b99582ed2bede4aaac6e2dd71424a9147b06f"
      },
      {
        "amount": 2000000000000,
        "block_no": 960525,
        "in_mempool": false,
        "output_idx": 0,
        "output_pubkey": "9984101f5471dda461f091962f1f970b122d4469077aed6b978a910dc3ed4576",
        "payment_id": "0000000000000055",
        "tx_hash": "37825d0feb2e96cd10fa9ec0b990ac2e97d2648c0f23e4f7d68d2298996acefd"
      },
      {
        "amount": 96947454120000,
        "block_no": 960525,
        "in_mempool": false,
        "output_idx": 1,
        "output_pubkey": "e4bded8e2a9ec4d41682a34d0a37596ec62742b28e74b897fcc00a47fcaa8629",
        "payment_id": "0000000000000000000000000000000000000000000000000000000000001234",
        "tx_hash": "4fad5f2bdb6dbd7efc2ce7efa3dd20edbd2a91640ce35e54c6887f0ee5a1a679"
      }
    ],
    "viewkey": "807079280293998634d66e745562edaaca45c0a75c8290603578b54e9397e90a"
  },
  "status": "success"
}

api/emission

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/emission"
{
   "data":{
      "blk_no":156852,
      "coinbase":14364698360000000,
      "fee":5547807947200
   },
   "status":"success"
}

api/version

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/version"
{
   "data":{
      "api":65536,
      "blockchain_height":156853,
      "git_branch_name":"templates",
      "last_git_commit_date":"2018-07-02",
      "last_git_commit_hash":"70be873",
      "monero_version_full":"0.2.0.0-fb56bed"
   },
   "status":"success"
}

api number is store as uint32_t. In this case 65536 represents major version 1 and minor version 0. In JavaScript to get these numbers, one can do as follows:

var api_major = response.data.api >> 16;
var api_minor = response.data.api & 0xffff;

api/rawblock/<block_number|block_hash>

Return raw json block data, as represented in Ryo.

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/rawblock/150000"

Example result not shown.


api/rawtransaction/<tx_hash>

Return raw json tx data, as represented in Ryo.

curl  -w "\n" -X GET "https://explorer.ryo-currency.com/api/rawtransaction/4307e5619b29dcc1d9cdf4a52b3d0717bcbab0efc06d88fb79a1e0e33594e6ec"

Example result not shown.