We have reached the halfway milestone in the DEx and Mastercoin Wallets 300 BTC bounty. There is now a tabulation of the results based on feedback from participates and 150 BTC will be paid out as well as corresponding MSC soon thereafter. This post covers the major accomplishments throughout this contest as well as the results and judging methodology.
Methodology
Milestone Results
Developer Results
Methodology
The methodology for determining contest allocations continues from the previous $25,000 Code Contest which ended in October 2013.
The following steps were taken:
- Participants reported the work that they had done during the contest.
- Participants undertook cross-evaluations to provide feedback.
- Normalize all feedback to fix those which don’t add to 100%.
- Attempt to determine how careful each person’s feedback was (i.e. the same % for everyone is not very careful, but different percentages for each person with detailed comments on how you chose those percentages is very careful).
- Weight each person’s feedback by how careful they were.
- Get a percentage for each person based on the combined weighted feedback.
- Perform a second pass through weighting step, changing each person’s grade for themselves from zero to the result from the first pass.
For all of the Developer and Tester Reports refer to the Mastercoin Development Thread on Bitcointalk: https://bitcointalk.org/index.php?topic=292628.960
Milestone Results
| Contestant | Dev % | Testing % | Total BTC | @ $800 per BTC |
| Zathras | 22.97% | 11.96% | 28.9467 | $23,157 |
| Bitoy | 17.79% | 13.73% | 24.6565 | $19,725 |
| Grazcoin | 19.87% | 16.96% | 28.3514 | $22,681 |
| Grimentz | 6.89% | 10.79% | 12.2887 | $9,831 |
| Jakecnn | 0.00% | 2.98% | 1.4905 | $1,192 |
| Cmlacy | 2.87% | 1.11% | 3.4226 | $2,738 |
| Tachikoma | 24.39% | 17.33% | 33.0540 | $26,443 |
| Marvshneider | 1.73% | 8.96% | 6.2104 | $4,968 |
| Bebopzzz | 0.00% | 3.30% | 1.6513 | $1,321 |
| Azmenthe | 1.95% | 4.15% | 4.0279 | $3,222 |
| Atriz | 0.00% | 5.02% | 2.5120 | $2,010 |
| Mastream | 0.00% | 3.06% | 1.5310 | $1,225 |
| Fthoughts | 1.54% | 0.64% | 1.8570 | $1,486 |
| Total | 100% | 100% | 150 | $120000 |
Developer Results
For the sake of brevity these results are highly compressed and you are urged to follow the link to the dev thread mentioned above for details.
Zathras
Masterchest Wallet
My wallet software is coming along nicely, this now has full DEx support. Still some work needed, the UI needs a good clean up and there are still a lot of bugs on my outstanding list. Lots of user-orientated stuff (for example bitcoin config autodetection).
A demo video is available at:
https://masterchest.info/walletdemo
Masterchest Library
The biggest change in v2 of the Masterchest library is of course DEx support. All DEx messages are supported, and the library handles both encoding and decoding functions. Also some nice performance gains achieved through tuning (recursive inputs etc) which speeds up blockchain scanning in the respective software that use it.
Masterchest Engine
v2 of the Engine has also been rewritten to support the new DEx messages and incorporate DEx state processing. Also runs the consensus system – v2 includes test MSC. For the results of the engine please see the masterchest.info website – the engine is what populates the databases for it.
Masterchest.info
v2 of the website brought with it – you guessed it – DEx support (a theme is appearing 
) and a significant redesign. Charting is real-time & once there are more trades taking place as we ramp this up I’ll open up the view options other than 60-day.
Masterchest CLI
Masterchest CLI is your bread & butter ‘does what it says on the tin’ utility. It simply wraps the Masterchest library in a CLI wrapper so you can call the functions from the command line.
Testing & Protocol
Appendix – Storing data in the blockchain
Consolidated all the various discussions on transaction storage and drafted an amendment to the spec which would explicitly define how this is done.
Masterchest Consensus System
Built and introduced the Masterchest consensus system to put the verification API (credit Tachikoma) to use in automated testing. This monitors each address and evaluates differences across the various implementations.
Class A Simplification
Rewrote the rules on Class A to allow for a variety of edge cases that had appeared on the network but were technically invalid per spec. These transactions could be decoded via ‘Peek & Decode’ and it was hurting consensus having ambiguity on these transactions.
Bitoy
MyMastercoins website
http://www.mymastercoins.com/Default.aspx
Source Code
https://github.com/Bitoy88/MyMastercoinsWebsite/
Create multisig parsing of Simple Send and Dex transactions from blockexplorer.com and blockchain.org.
(Simple send, sell offer, purchase offer, payment)
Test MSC DEx order book
http://www.mymastercoins.com/Orders.aspx?CurrencyID=2
Charts for Simple Send, test msc
http://www.mymastercoins.com/About.aspx
Transaction module.
http://www.mymastercoins.com/Transactions.aspx
MyMastercoins thin client wallet MMW (windows based)
http://www.mymastercoins.com/MyMSCWallet.aspx
Send MSC (simple send)
Send TMSC (simple send)
Sell TMSC Distributed Exchange
Buy TMSC Distributed Exchange
Gets data from mymastercoins.com SQL server
Used Zathras library to send multisig transaction
Grazcoin
Major part of the implementation is the set of publicly available web apps (POST/json):
1. validating address and checking if pubkey is on the blockchain (/wallet/validateaddr/)
2. generating a bitcoin/mastercoin/bitcoin payment raw send transaction to be signed using the hybrid web wallet (/wallet/send/)
3. generating a raw sell offer transaction to be signed by the hybrid web wallet (/wallet/sell/)
4. generating a raw accept offer transaction to be signed by the hybrid web wallet (/wallet/accept/)
DEx Development
Payment stage for accepted offer.
Using the hybrid wallet for paying the accept offer.
DEx Testing
Skeleton wallet was developed to ease testing for casual testers
Live consensus checker between explorer and masterchain
Test plan docs https://masterchain.info/downloads/DEx_test_plan.pdf
Grimentz
Development
Design icons for all the transaction types and backgrounds to indicate each transaction DEx’s status.
Document describing all possible transactions / status combinations:
https://masterchain.info/downloads/masterchain_icons_list.pdf
Implemented the icon / background scheme with transparent icons and CSS classes and integrated in masterchain.info site.
Implemented HTML form + signing (in javascript) + sending of wallet skeleton required for DEx testing.
Implemented an offline version of the signing form in javascript (in final stages of testing, will go live tomorrow).
Responded to users and testers feedback (on mailing list and the forum) and improved usability of the transactions sending form.
Implemented HTML client side wallet for masterchain.info: https://masterchain.info/wallet.html (users add addresses to wallet from address pages.)
Many small html5 features and improvements to masterchain.info
Testing
Tested the status of individual transaction types on masterchain.info using the icons mentioned above and hover HTML message that I also implemented.
Test signing of all possible DEx transactions within masterchain.info.
Suggest structured testing format doc based on the transaction type / status icons and backgrounds I designed:
https://masterchain.info/downloads/DEx_test_plan.pdf
Followed the testing document to test transactions on masterchain.info
Testing (+ fixing) of masterchain.info DEx forms on >20 different combinations of platforms, browsers and screen resolutions including 3 tablets (iOS, Android and windows 8.1) and 2 smart phones (iOS and Android.)
cmlacy
Faiz and I have been working with extending the existing webwallet that grazcoin and Grimentz have posted on masterchain.info. We’ve taken a crack at making a simple installer, and filled out installation instructions for the wallet, masterchain.info-style server, and obelisk server:https://github.com/LDEngine/msc-webwallet
Tachikoma
Mastercoin Explorer
Screenshot |
Main features
Not related to the bounty
Testing Where |
Mastercoin Wallet
Screenshot |
Main features
Not related to the bounty
Where |
Mastercoin Ruby
Mastercoin-ruby is the encode/decode lookup layer that can lookup transactions. Support for decoding/encoding of DEx messages is now supported in this library. This library also comes with accompanying rSpec suite.
Mastercoin protocol updates
- Wrote a specification clarification for reserving funds for DEx messages.
- Wrote a few general clarifications for Selling/Purchase offers.
- Updated the spec to reflect we ignore Mastercoin transactions for purchases.
- Updated verification API to add support for DEx consensus
Not related to the bounty
- Updated the spec to clarify P&D
- Updated the spec to unlock features on block level
- Updated the spec with more information about the vesting of Dev MSC
- Organised a consensus hackathon
- Started working on the reference implementation in Go
marvschnieder
Testing
Published https://github.com/marv-engine/QA/blob/master/MastercoinDistributedExchangeTestPlan.md which describes the strategic approach for Dist-Ex testing (rigorous, comprehensive, repeatable, defensible). Working on test requirements for each transaction type – the next level of detail, then test procs can be written for each candidate application.
MSC Spec
Submitted pull requests to improve & clarify updating/canceling a Sell Offer (tx=20). Wrestling this to closure. Identified other transaction definitions that need to be clarified.
Development
I’m working with Curtis, Faiz, Yuval on UI/UX for the web wallet
azmenthe
Contributed to early API design which was unfortunately abandoned.
Helped Faiz with the client side encryption/decryption of private keys using HTML5 local storage
Have been testing various new features and assisting with debugging/improvement
Have started a fork to move the web wallet to django for maintainability as opposed to python’s basic HTTP server
Additionally to grok grazcoin’s mastercoin-tools (https://github.com/grazcoin/mastercoin-tools) I forked it and have started to write unit tests.
fthoughts
Working on a limited/zero trust web wallet for Mastercoin users with Curtis and Patrick. Right now we have client-side encryption, storage, and signing soon to come. See web wallet (https://github.com/LDEngine/msc-webwallet/
Omni 
Great, but *nobody* cares about what minor things the guys have been doing. We only care about one thing you ignore in every update: When will Mastercoin finally release DEx or other products?
I mean honestly, why can’t you just give an update on that?!
Jess here you go http://blog.mastercoin.org/2014/01/31/date-for-the-launch-of-the-mastercoin-distributed-exchange-with-real-msc-is-set/
@Jess – you can expect a launch date for the DEx to be announced very soon now (in fact we have a dev call to finalize this in an hour)
I’m still looking forward a working true wallet, there’s none was working for me as a true wallet.
there are some at mastercoinwallets.org now