Event Finished: Winners Announced!
Place User Payout Platform Link
1 sthitaprajna 42 USD Steemit Submission
2 ced000 37 USD Steemit Submission
3 Mauyon 33 USD Steemit Submission
4 deyvich 28 USD Steemit Submission
5 milaan 28 USD Steemit Submission
6 focusnow 26 USD Steemit Submission
7 ankarlie 20 USD Steemit Submission
8 Blessedben 20 USD Steemit Submission
9 divine-sound 20 USD Steemit Submission
10 donnest 20 USD Steemit Submission
11 groynes 20 USD Steemit Submission
12 Oivas 18 USD Steemit Submission
13 Phinix 18 USD Steemit Submission
14 nachomolina 15 USD Steemit Submission
15 ronarexx 15 USD Steemit Submission
16 rosiger1 15 USD Steemit Submission
17 acheever 14 USD Steemit Submission
18 Apyman 14 USD Steemit Submission
19 maeugenia 14 USD Steemit Submission
20 olasamuel 14 USD Steemit Submission
21 bharathi22 12 USD Steemit Submission
22 crypto-wisdom 12 USD Steemit Submission
23 Dtwosam 12 USD Steemit Submission
24 ifeoluwa88 12 USD Steemit Submission
25 jadams2k18 12 USD Steemit Submission
26 mrrpiusz 12 USD Steemit Submission
27 proofreade 12 USD Steemit Submission
28 raja-bhoj 12 USD Steemit Submission
29 Surpassingworld 12 USD Steemit Submission
30 ulqu3 12 USD Steemit Submission
31 autinf 11 USD Steemit Submission
32 cross 11 USD Steemit Submission
33 godwinzzyzx 11 USD Steemit Submission
34 joseangelvs 11 USD Steemit Submission
35 mistakili 11 USD Steemit Submission
36 Intheory 10 USD Steemit Submission
37 MichelleRhey 10 USD Steemit Submission
38 opiman 10 USD Steemit Submission
39 thetimetravelerz 10 USD Steemit Submission
40 tonyryce95 10 USD Steemit Submission
41 truelovemom 10 USD Steemit Submission
42 dewriter 8 USD Steemit Submission
43 neiraurdaneta 8 USD Steemit Submission
44 praditya27 8 USD Steemit Submission
45 syllem 8 USD Steemit Submission
46 Abhijeetcg 7 USD Steemit Submission
47 Aduragbemi 7 USD Steemit Submission
48 Blessedben 7 USD YouTube Submission
49 daniel3050 7 USD Steemit Submission
50 investorbj 7 USD Steemit Submission
51 leonelys 7 USD Steemit Submission
52 praditya27 7 USD YouTube Submission
53 sahiba-rana 7 USD YouTube Submission
54 sames 7 USD Steemit Submission
55 sarez 7 USD Steemit Submission
56 alokkumar121 6 USD Steemit Submission
57 dannodaniel 6 USD Steemit Submission
58 Ighomaria 6 USD Steemit Submission
59 josevas217 6 USD Steemit Submission
60 mikay 6 USD Steemit Submission
61 miyexi 6 USD Steemit Submission
62 talented-fingers 6 USD Steemit Submission
63 thaishps 6 USD Steemit Submission
64 vanddy 6 USD Steemit Submission
65 ajks143 5 USD Steemit Submission
66 autofreak 5 USD Steemit Submission
67 clockworkpriya 5 USD Steemit Submission
68 drishtipoonam 5 USD YouTube Submission
69 Ezekielprince1 5 USD Steemit Submission
70 ggcarlosr 5 USD Steemit Submission
71 iguessitsokay 5 USD Steemit Submission
72 jacqueline5 5 USD Steemit Submission
73 Kiddady105b 5 USD Steemit Submission
74 lebey1 5 USD Steemit Submission
75 michades97 5 USD Steemit Submission
76 Oivas 5 USD YouTube Submission
77 saun 5 USD Steemit Submission
78 tosindesign1 5 USD YouTube Submission
79 xyzashu 5 USD Steemit Submission
80 yenilmez86 5 USD Steemit Submission
81 belemo 4 USD Steemit Submission
82 blockmagic 4 USD Steemit Submission
83 brandonk 4 USD Steemit Submission
84 chekohler 4 USD Steemit Submission
85 Diana 4 USD Steemit Submission
86 nice2you 4 USD Steemit Submission
87 rizta 4 USD Steemit Submission
88 seifanlj 4 USD Steemit Submission
89 stupid 4 USD Steemit Submission
90 Tega-utos 4 USD Steemit Submission
91 african1 3 USD Steemit Submission
92 ahmadmanga 3 USD Steemit Submission
93 drishtipoonam 3 USD Steemit Submission
94 Humphery 3 USD Steemit Submission
95 hungryharish 3 USD Steemit Submission
96 JaiChai 3 USD Steemit Submission
97 king-oghie 3 USD Steemit Submission
98 lavanyalakshman 3 USD Steemit Submission
99 maxwellnewlife7 3 USD Steemit Submission
100 mrnightmare89 3 USD Steemit Submission
101 oxygen02 3 USD Steemit Submission
102 paragismb 3 USD Steemit Submission
103 precious_her 3 USD Steemit Submission
104 rosaimm 3 USD Steemit Submission
105 sahiba-rana 3 USD Steemit Submission
106 sumit71428 3 USD Steemit Submission
107 Wilmer1988 3 USD Steemit Submission
108 yonny 3 USD Steemit Submission
109 yurulias 3 USD Steemit Submission
110 zoide 3 USD Steemit Submission
111 abduloniz 2 USD YouTube Submission
112 ajibade 2 USD YouTube Submission
113 artandmusic 2 USD Steemit Submission
114 autofreak 2 USD YouTube Submission
115 bharathi22 2 USD YouTube Submission
116 clockworkpriya 2 USD YouTube Submission
117 cyberblock 2 USD Steemit Submission
118 francko29n 2 USD Steemit Submission
119 GodRACE 2 USD YouTube Submission
120 Jackson 2 USD Steemit Submission
121 Jackson 2 USD YouTube Submission
122 lavanyalakshman 2 USD YouTube Submission
123 maparari 2 USD YouTube Submission
124 roselyn26 2 USD Steemit Submission
125 saun 2 USD YouTube Submission
126 talented-fingers 2 USD YouTube Submission
127 thaishps 2 USD YouTube Submission
128 tonyryce95 2 USD YouTube Submission
129 aarshi 1 USD Medium Submission
130 aarshi 1 USD Twitter Submission
131 abduloniz 1 USD Twitter Submission
132 abduloniz 1 USD Instagram Submission
133 Abhijeetcg 1 USD Twitter Submission
134 acheever 1 USD Medium Submission
135 acheever 1 USD Twitter Submission
136 afrin5 1 USD Medium Submission
137 afrin5 1 USD Twitter Submission
138 ahmadmanga 1 USD Twitter Submission
139 ajibade 1 USD Twitter Submission
140 ajibade 1 USD Instagram Submission
141 ajks143 1 USD Medium Submission
142 ajks143 1 USD Twitter Submission
143 ak 1 USD YouTube Submission
144 ak 1 USD Medium Submission
145 ak 1 USD Twitter Submission
146 ak 1 USD Instagram Submission
147 akb0802 1 USD Medium Submission
148 akb0802 1 USD Twitter Submission
149 akb0802 1 USD Instagram Submission
150 almostpeter 1 USD Twitter Submission
151 alokkumar121 1 USD Twitter Submission
152 alz190 1 USD Twitter Submission
153 animaya 1 USD Twitter Submission
154 anthonyde 1 USD Medium Submission
155 Apyman 1 USD Medium Submission
156 Apyman 1 USD Twitter Submission
157 aquamarine 1 USD Twitter Submission
158 artandmusic 1 USD Medium Submission
159 artandmusic 1 USD Twitter Submission
160 autinf 1 USD Medium Submission
161 autinf 1 USD Twitter Submission
162 autofreak 1 USD Medium Submission
163 autofreak 1 USD Twitter Submission
164 autofreak 1 USD Instagram Submission
165 awesome-p 1 USD Medium Submission
166 awesome-p 1 USD Twitter Submission
167 Batolic 1 USD Twitter Submission
168 Batolic 1 USD Instagram Submission
169 belemo 1 USD Medium Submission
170 belemo 1 USD Twitter Submission
171 belemo 1 USD Instagram Submission
172 bharathi22 1 USD Medium Submission
173 bharathi22 1 USD Twitter Submission
174 bharathi22 1 USD Instagram Submission
175 Blessedben 1 USD Medium Submission
176 Blessedben 1 USD Twitter Submission
177 brandonk 1 USD Twitter Submission
178 brandonk 1 USD Instagram Submission
179 btcfan 1 USD Twitter Submission
180 ced000 1 USD Twitter Submission
181 chekohler 1 USD Medium Submission
182 chekohler 1 USD Twitter Submission
183 clockworkpriya 1 USD Medium Submission
184 clockworkpriya 1 USD Twitter Submission
185 clockworkpriya 1 USD Instagram Submission
186 cross 1 USD Medium Submission
187 cross 1 USD Twitter Submission
188 cross 1 USD Instagram Submission
189 crypto-wisdom 1 USD Medium Submission
190 cryptoangels 1 USD Twitter Submission
191 cryptolucky 1 USD Twitter Submission
192 daniel3050 1 USD Twitter Submission
193 daniel3050 1 USD Instagram Submission
194 dannodaniel 1 USD Medium Submission
195 dannodaniel 1 USD Twitter Submission
196 Danogun 1 USD Medium Submission
197 Danogun 1 USD Twitter Submission
198 Danogun 1 USD Instagram Submission
199 dewriter 1 USD Twitter Submission
200 dewriter 1 USD Instagram Submission
201 deyvich 1 USD Medium Submission
202 deyvich 1 USD Twitter Submission
203 dguvnor 1 USD Medium Submission
204 Diana 1 USD Medium Submission
205 Diana 1 USD Twitter Submission
206 Diana 1 USD Instagram Submission
207 divine-sound 1 USD Medium Submission
208 divine-sound 1 USD Twitter Submission
209 donnest 1 USD YouTube Submission
210 donnest 1 USD Medium Submission
211 donnest 1 USD Twitter Submission
212 donnest 1 USD Instagram Submission
213 drishtipoonam 1 USD Medium Submission
214 drishtipoonam 1 USD Twitter Submission
215 Dtwosam 1 USD Medium Submission
216 Dtwosam 1 USD Instagram Submission
217 floralisma 1 USD Medium Submission
218 floralisma 1 USD Instagram Submission
219 focusnow 1 USD Medium Submission
220 focusnow 1 USD Twitter Submission
221 francko29n 1 USD Medium Submission
222 francko29n 1 USD Twitter Submission
223 francko29n 1 USD Instagram Submission
224 gabofic 1 USD Medium Submission
225 gabofic 1 USD Twitter Submission
226 gade4rt 1 USD Twitter Submission
227 gade4rt 1 USD Instagram Submission
228 ggcarlosr 1 USD Twitter Submission
229 godwinzzyzx 1 USD Medium Submission
230 godwinzzyzx 1 USD Twitter Submission
231 godwinzzyzx 1 USD Instagram Submission
232 Haybeeh 1 USD Instagram Submission
233 hungryharish 1 USD Twitter Submission
234 ifeoluwa88 1 USD Twitter Submission
235 Ighomaria 1 USD Medium Submission
236 Ighomaria 1 USD Twitter Submission
237 iguessitsokay 1 USD Medium Submission
238 iguessitsokay 1 USD Twitter Submission
239 inieson 1 USD Twitter Submission
240 Intheory 1 USD Twitter Submission
241 investorbj 1 USD Twitter Submission
242 investorbj 1 USD Instagram Submission
243 Jackson 1 USD Twitter Submission
244 Jackson 1 USD Instagram Submission
245 jacqueline5 1 USD Medium Submission
246 jacqueline5 1 USD Twitter Submission
247 jadams2k18 1 USD Medium Submission
248 jadams2k18 1 USD Twitter Submission
249 jadams2k18 1 USD Instagram Submission
250 JaiChai 1 USD Twitter Submission
251 Java87 1 USD Twitter Submission
252 jhosepdelgado 1 USD Twitter Submission
253 jhosepdelgado 1 USD Instagram Submission
254 joseangelvs 1 USD Twitter Submission
255 Kiddady105b 1 USD Twitter Submission
256 king-oghie 1 USD Medium Submission
257 king-oghie 1 USD Twitter Submission
258 kingofdice 1 USD Twitter Submission
259 kwadjobonsu 1 USD Twitter Submission
260 kwadjobonsu 1 USD Instagram Submission
261 lahmie 1 USD Twitter Submission
262 lahmie 1 USD Instagram Submission
263 lavanyalakshman 1 USD Medium Submission
264 lavanyalakshman 1 USD Twitter Submission
265 lavanyalakshman 1 USD Instagram Submission
266 lebey1 1 USD YouTube Submission
267 lebey1 1 USD Medium Submission
268 lebey1 1 USD Twitter Submission
269 lebey1 1 USD Instagram Submission
270 leonelys 1 USD Twitter Submission
271 leonelys 1 USD Instagram Submission
272 linnbenton 1 USD Twitter Submission
273 linnbenton 1 USD Instagram Submission
274 lovemelange 1 USD Twitter Submission
275 maparari 1 USD Twitter Submission
276 maparari 1 USD Instagram Submission
277 marinmex 1 USD Steemit Submission
278 masud 1 USD Twitter Submission
279 Mauyon 1 USD Medium Submission
280 Mauyon 1 USD Instagram Submission
281 mavi89 1 USD Medium Submission
282 mavi89 1 USD Twitter Submission
283 mavi89 1 USD Instagram Submission
284 maxwellnewlife7 1 USD Twitter Submission
285 merina 1 USD Medium Submission
286 merina 1 USD Twitter Submission
287 michades97 1 USD Instagram Submission
288 mikay 1 USD Medium Submission
289 mikay 1 USD Twitter Submission
290 milaan 1 USD Medium Submission
291 milaan 1 USD Twitter Submission
292 mistakili 1 USD Medium Submission
293 mistakili 1 USD Twitter Submission
294 mrrpiusz 1 USD Twitter Submission
295 mrrpiusz 1 USD Instagram Submission
296 nice2you 1 USD Medium Submission
297 nice2you 1 USD Twitter Submission
298 nice2you 1 USD Instagram Submission
299 Oivas 1 USD Medium Submission
300 Oivas 1 USD Twitter Submission
301 Oivas 1 USD Instagram Submission
302 olasamuel 1 USD Twitter Submission
303 olasamuel 1 USD Instagram Submission
304 opiman 1 USD Twitter Submission
305 opiman 1 USD Instagram Submission
306 oxygen02 1 USD Twitter Submission
307 oxygen02 1 USD Instagram Submission
308 ozurumba 1 USD Medium Submission
309 ozurumba 1 USD Twitter Submission
310 ozurumba 1 USD Instagram Submission
311 paragismb 1 USD Twitter Submission
312 paragismb 1 USD Instagram Submission
313 Phinix 1 USD Twitter Submission
314 Phinix 1 USD Instagram Submission
315 praditya27 1 USD Medium Submission
316 praditya27 1 USD Twitter Submission
317 praditya27 1 USD Instagram Submission
318 precious_her 1 USD Twitter Submission
319 precious_her 1 USD Instagram Submission
320 proofreade 1 USD Medium Submission
321 proofreade 1 USD Twitter Submission
322 Rashford 1 USD YouTube Submission
323 Rashford 1 USD Twitter Submission
324 Rashford 1 USD Instagram Submission
325 ronarexx 1 USD Medium Submission
326 ronarexx 1 USD Twitter Submission
327 rosaimm 1 USD Medium Submission
328 rosaimm 1 USD Twitter Submission
329 rosaimm 1 USD Instagram Submission
330 roselyn26 1 USD Medium Submission
331 roselyn26 1 USD Instagram Submission
332 rosiger1 1 USD Medium Submission
333 rosiger1 1 USD Twitter Submission
334 sahiba-rana 1 USD Medium Submission
335 sahiba-rana 1 USD Instagram Submission
336 salaujohnson 1 USD Twitter Submission
337 salaujohnson 1 USD Instagram Submission
338 sames 1 USD Medium Submission
339 sarez 1 USD Twitter Submission
340 saun 1 USD Medium Submission
341 saun 1 USD Twitter Submission
342 saun 1 USD Instagram Submission
343 selina2 1 USD Medium Submission
344 selina2 1 USD Twitter Submission
345 sirlahmjr 1 USD Twitter Submission
346 sthitaprajna 1 USD Medium Submission
347 stupid 1 USD Twitter Submission
348 Surpassingworld 1 USD Instagram Submission
349 talented-fingers 1 USD Medium Submission
350 talented-fingers 1 USD Twitter Submission
351 talented-fingers 1 USD Instagram Submission
352 Tega-utos 1 USD Medium Submission
353 Tega-utos 1 USD Twitter Submission
354 thaishps 1 USD Medium Submission
355 thaishps 1 USD Twitter Submission
356 thaishps 1 USD Instagram Submission
357 thetimetravelerz 1 USD Medium Submission
358 thetimetravelerz 1 USD Twitter Submission
359 thetimetravelerz 1 USD Instagram Submission
360 tonyryce95 1 USD Medium Submission
361 tonyryce95 1 USD Twitter Submission
362 tonyryce95 1 USD Instagram Submission
363 tosindesign1 1 USD Twitter Submission
364 tosindesign1 1 USD Instagram Submission
365 truelovemom 1 USD Medium Submission
366 truelovemom 1 USD Twitter Submission
367 truelovemom 1 USD Instagram Submission
368 twistytango 1 USD Twitter Submission
369 ulqu3 1 USD Twitter Submission
370 ulqu3 1 USD Instagram Submission
371 vanddy 1 USD YouTube Submission
372 vanddy 1 USD Medium Submission
373 vanddy 1 USD Twitter Submission
374 vanddy 1 USD Instagram Submission
375 wakanda 1 USD Twitter Submission
376 wakanda 1 USD Instagram Submission
377 whitestallion 1 USD Twitter Submission
378 Wilmer1988 1 USD Medium Submission
379 Wilmer1988 1 USD Twitter Submission
380 Wilmer1988 1 USD Instagram Submission
381 wireless07 1 USD Medium Submission
382 wireless07 1 USD Twitter Submission
383 xyzashu 1 USD Twitter Submission
384 yenilmez86 1 USD Medium Submission
385 yenilmez86 1 USD Twitter Submission
386 yurulias 1 USD Medium Submission
387 yurulias 1 USD Twitter Submission
388 yurulias 1 USD Instagram Submission
389 zoide 1 USD Twitter Submission
390 zoide 1 USD Instagram Submission
Harmony #1
Prize Pool: 1,300 USD

Accepted Media:


Harmony: Open Consensus for 10 Billion People. Harmony for One and All.

End Date: Aug. 26, 2019, midnight

Event Type: Writing Contest + Bounty

CONTEST RULES [Getting Started Guide]

  • Write an article about Harmony! How can projects benefit from using Harmony as their underlying infrastructure? What makes Harmony better than other sharding networks? What are the implications of having a network that is resource efficient and able to scale linearly (instead of requiring exponential resources)? How does sharding on multiple layers improve security and efficiency? What are you favorite potential applications of Harmony (gaming, large-scale economies, high transaction per second platforms, enterprise infrastructure, etc)?  Please come up with some use-cases! As always, the topic is fairly open-ended, so be creative!

 


SUBMISSIONS

  • Write and publish an article on Medium or Steemit.
    • Article Share Bonus: If you wrote an article, share your article on Twitter to get a bonus! Make sure to include #harmonyone.
    • Article Bonus: If you would like to publish your article on both Medium and Steemit, one of them will be treated as a bonus.
  • Bonus Bounties:
    • Write a small blurb about an awesome Harmony feature and post it on Twitter with the hashtag #harmonyone.
    • Post a Harmony related graphic on Instagram with the hashtag #harmonyone.
  • Videos: Make a short video about Harmony. Please be mindful of ambient noises and background if making a selfie style video. Videos can be posted on YouTube/DTube! 
  • Max Submissions: One user can submit a maximum of one Medium or Steemit article (if both one of them will be treated as a bonus), one Twitter link, one Instagram link and one YouTube video.

PRIZE DISTRIBUTION

  • Prizes will be distributed to all users who fairly participate. Winners will be announced and posted here.
    • Articles will be ranked and receive rewards based on quality.
    • All qualifying bounties and link shares will get a small bonus depending on the number of participants.
    • Videos will be ranked an receive rewards based on quality.
  • When submitting an article please choose if you would like to be rewarded in Ethereum or STEEM.
    • Don't forget to go to your profile page and update your wallet information.
 
 
 

 

What is Harmony?

Harmony is a fully scalable, provably secure and energy efficient blockchain based on sharding technology. Harmony is a PoS blockchain that is capable of linear scaling, enabling unprecedented transactions per second with the ability to easily scale as the network becomes heavily utilized.
Harmony scales decentralization to a completely new level. It is the most decentralized form of staking powered by optimized sharding technology.
On June 28th, Harmony launched their Mainnet, the first fully sharded POS blockchain. The Mainnet had 600 nodes, making it one of the top 15 decentralized networks.
The Phase 2 version of Harmony's mainnet aims to add 4 shards with 400 nodes each, for a total of 1600 nodes. Mainnet Phase 2 also includes a token swap to the native ONE token, the staking smart contract, and token transfers.

 

 

The Harmony Dream Team

The success of a project is directly dependent on the team behind it. The Harmony team consists of experts in both business and engineering who are driven by their passion for a better world.
Each member of this well-rounded team has extensive experience in academia and industry. 
 
 
Some of the greatest projects around today are built by individuals who fall into the category of “CryptoMafia”. These are top level executives that leave tech giants, academia and Wall street to bring revolutionary products to the market through their experience, drive, passion and expertise. The team at Harmony is full of just that - a group of talented engineers and business minds that have already proven their exceptional abilities on the market and have come together to build something greater!
 
 

Blockchain Technology Comparisons

A sharded PoS system is the best tradeoff between speed and fair consensus. Harmony is the best examples of such a system. Here is a comparison of some other projects utilizing sharding technology.
 

Comparison Table to other leading PoS blockchains: 

Comparison Table (PoS Blockchains)

 

Modern Scalability Issues: Saved By Harmony

Scalability is a very real issue faced by many existing projects. Those that aren’t already facing scalability issues, may very well face them in the near future as their projects continue to grow.
 
Cryptokitties
 
Cryptokitties is one such project that amassed massive attention and a large userbase only to clog up the entire Ethereum network. 
 
The company behind Cryptokitties is Animoca. Animoca has chosen to partner with Harmony in order to collaborate on the development of a new ecosystem for crypto collectibles!
 
 
DeFi (Decentralized Finance)
 
As reported by Binance, DeFi has become one of the most common use-cases of the Ethereum network. DeFi consists largely of cryptocurrency lending and borrowing, which results in high transaction throughput requirements. Ethereum is running into scalability issues again as the network’s transaction speed simply cannot keep up with the demand. This is expected to only get worse as the industry continues to grow.
 
 
Harmony can support the growing needs of the DeFi industry in a way that is both resource efficient and secure. With Harmony’s sharding, they are able to scale linearly as the demand of a project grows, ensuring that they won’t be bottlenecked by their infrastructure.

 

 

Harmony: The Revolution

Harmony is a sharding based blockchain that has produced various, significant breakthroughs to current challenges in the distributed ledger industry. 
Harmony approaches problem-solving by applying 10x innovations at the layer level rather than searching for 10% improvements. The achievements of Harmony’s protocol are as follows:
 
1) Full Scalability 
  • Harmony shards both the processing and the record keeping (state) of the network
  • This means that the storage requirements are less restrictive

 

2) Secure Sharding 
  • Harmony’s Beacon chain uses a DRG (distributed randomness generation) process
  • Unbiasable, unpredictable, verifiable, scalable

 

3) Fast and Efficient Consensus
  • Harmony is PoS and more energy efficient than PoW alternatives

 

4) Adaptive-Threshold PoS
  • Staking requirements are adjusted based on total staking volumes so that:
    • Malicious stakeholders cannot concentrate on single shards
    • The threshold is low enough to allow participation for small stakeholders

 

5) Scalable Networking Infrastructure
  • Harmony can propagate blocks quickly within shards or across the network
  • Cross shard transactions scale logarithmically with the number of shards
  • Every new shard gets you 1, 10, 100... more transactions instead of 5, 10, 15...

 

6) Consistent Cross-Shard Transactions
  • Cross shard sharing happens via direct communication
  • Atomic locking provides references to ensure cross shard consistency
 

Sharding

Sharding is the process of dividing a database’s computational responsibilities into smaller segments (called shards) which individually carry out their tasks, making the total burden of computation smaller. 
This means that instead of tackling large computational tasks, they are broken into smaller chunks which are easier to process.
 

Harmony's Sharding

Harmony has built its system on both industrial and academic developments. From the Zilliqa network, the industry learned to shard. From academic papers, state sharding was conceived, which remedied the storage bottleneck of the Zilliqa protocol and foresaw the attack vector of corrupting single shards over time.
Harmony has learned from both industry and academia in developing its own linearly scaling, and provably secure sharding scheme.
 
Within Harmony are two sorts of chains: a beacon chain and multiple shard chains. The beacon chain is an identity register derived from a randomness generator. The shards on the other hand store separate blockchain states and process transactions. This is all built on a PoS system where some minimum number of votes is the threshold for security against malicious actors. Votes are accrued based on the amount of Harmony ONE held.
 

Randomness In The Sharding Process

Randomness-based sharding is the style of sharding that Harmony, and other industry and academic leaders, have determined to be the most secure (other set-ups include location-based and centrally-controlled sharding schemes). In randomness-based sharding a random number is mutually agreed upon to determine the sharding responsibilities for each node. The agreed upon random number must be: unpredictable, unbiaseable, verifiable, and scalable.
Harmony combines a plethora of solutions from projects like Ethereum 2.0 and papers such as Omniledger and RapidChain to adapt a solution with the various strengths of its predecessors.  These solutions focus on computing, proving, sharing, and securing the information related to the randomness of the numbers generated for the assignments of the nodes.
 

Epochs: Sharding Time Intervals

On the Harmony network, an epoch is a time interval in which the sharding conditions are fixed. When one epoch ends and a new one starts, the sharding conditions are changed. This acts to further secure the network.
 
 

Proof of Stake Sharding

Every voting share (which is underwritten by a Harmony One token) allows its respective staker to cast one vote. Security is maintained by keeping malicious stakers to less than 1/3 of the of the voting shares in any shard. Harmony has developed an adaptive threshold system to guarantee the security of the network. By Harmony’s calculations, this system is completely fault tolerant if less than ¼ of the entire network is malicious; which is quite conservative in preparing for a worst-case scenario.
As today, competitors like Cosmos the TOP 10 validators  hold more than 50% of the total staked tokens, while EOS has only 21 committee seats- constituting them highly centralized.
Harmony will adopt EPoS, a mechanism that elects the highest ranked validators based on stake as the committee. Specifically, for every epoch (~ 1 day), the top 1600 stakers will obtain the 1600 seats (4 shards * 400 seats) and become the validators across the shards. Once the epoch changes, the new rank of stakes will determine the validators for the next epoch.
 
Personalities like Vitalik Buterin (Ethereum), Zaki Manian (Tendermint), Gawin Wood (Parity Technologies), Alex Skidanov (Near Protocol) have been among those that provided publicly feedback 
 
 

Resharding

After an epoch is over, the validators that remove their stake are expelled from the network. Those who stay will receive new voting shares for the next epoch. These new shares are randomly assigned to other shards that have more voting shares than the median of the entire network; then some constant number of all shares will be redistributed to shards that have less than the median of all voting shares. This means that Harmony’s shards do not have to reset themselves from scratch every time an epoch has ended, and the computational requirements will be reduced by some factor related to the number of participants that choose to keep their stake in the network for the next round of consensus. This further synergizes with the concept that high stake holders will want to (1) ensure the system runs optimally and (2) maintain and increase their stakes as more epochs progress and the network develops.
 

The Beacon Chain

One of Harmony’s differentiating factors is the protocol’s beacon chain. It is one of two chain types, the other being the multiple transaction-processing shard chains of the network. The beacon chain itself processes transactions like the standard shard chains, but it also has two other key functions.
1)      Generating the random numbers that influence which validators are assigned to which shards
2)      Accepting the stakes of the stakers applying to becomes validators
The validators of the beacon chain are determined in a similar process to that which determines the validators of the other standard shard chains.
This mechanism forces malicious actors to corrupt both the shard chain they are targeting, and the beacon chain. Malicious actors are forced to do so that other nodes can be influenced to believe that the new fake block is one that has met the randomly determined requirements that the beacon chain is responsible for presetting. Using the central beacon chain as a relay method between shards also decreases the computational burden that would be present if each shard had to communicate to all other shards independently.
 

State Sharding On The Blockchain

In the Harmony network, each shard chain maintains its own account state. A user can have multiple balances contributed as voting shares to different shards; these balances can move across shards at the user’s behest via cross-shard transactions.
Smart contracts are handled differently, and can only be held within the shard in which it was created. For applications that require more throughput than a single shard can handle, Harmony has built a decentralized application developer which can create multiple instances of the same smart contract on different shards and appropriate a subset of traffic to each of them as is deemed fit. These instances do not share the same state, but can communicate with each other across shards.
 

Pangaea - A Blockchain Experimental Zone Turned To A Massive Success

Pangaea is an experimental zone for thousands of people to interact with the Harmony network, test the limitations of our technology and have lots of fun while earning rewards. Pangaea is created purely for experimental purposes. It will have its own currency for playing and bookkeeping.
 
It’s the first live experiment - showcasing great prospect for participation on the development of the Harmony network. Within the first 24 hours the initiative had the following:
  1. 138 Nodes up & running already
  2. 1283 Signups
  3. 77 Countries
  4. 356 Keys Downloaded

 
The goals of Pangaea:
  • Test Harmony’s upcoming core protocol milestones and updates such as staking smart contracts and resharding, on a network of all external nodes
  • Set-up and onboard a vast number of nodes, ready to jump into the mainnet, through collective knowledge building and competitions
  • Identify and award community members who help secure Harmony network and are willing to go the extra mile by taking on leadership roles in our validator community
More about Pangaea and how you can setup a node in our experimental zone: https://docs.harmony.one/pangaea/