Directed acyclic graph

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DAG, distributed acyclic graph, is a distributed-ledger technology that links transactions together directly without miners or blocks.

Currently (January 2018) there are three major DAG-based cryptocurrencies: Byteball, IOTA, and Raiblocks.

There is a wiki article comparing Byteball and IOTA.

Here is a table detailing differences among them. See the Cryptocurrency subreddit thread[1] for further discussion.

Comparison

Byteball IOTA Raiblocks/Nano
Address reuse Yes Not after sending[2] Yes
Chain type Main chain DAG[3] PoW DAG[4] dPoS DAG+Blockchain[5]
Confirmation time (theoretical) 30 seconds[6] Instant[7] Instant[8]
Confirmation time (current) ~10 minutes?[9] Minutes to hours[10] to a day?[11] ~10 seconds[12]
Byteball IOTA Raiblocks
Address reuse Yes Not after sending Yes
Chain type Main chain DAG PoW DAG dPoS DAG+Blockchain
Confirmation time (theoretical) 30 seconds Instant Instant
Confirmation time (current) ~10 minutes? Minutes to hours

to a day?

~10 seconds
Consensus Mainchain,

deterministic

Minimal PoW,

probabilistic

Weighted dPoS voting
Developer ownership 1%? 5%? 4.8%?
Distribution Free airdrops,

1% premine

Public ICO. No premine Manual mining via captcha
Distribution complete No Yes Yes
Divisibility 1 GBYTE: 1 billion Bytes 1 MIOTA: 1 million IOTA 1 XRB: 1024 raw
Fees Very small, based on size of data stored No fees No fees
Focus Smart contracts.

Storing arbitrary dataValuetransfer

Internet of Things (m2m) Value transfer (h2h)
Inflation None/Deflationary (minus distribution) None/Deflationary None/Deflationary
Offline transactions Via blackbytes? Yes Yes?
Partnerships A few? Many None as of 2014?
Public team Partially? Yes Yes
Privacy Yes via Blackbytes Eventually,

Test mixer

Not on chain
Quantum resistant Not yet. Via NTRU Yes No?
Smart contracts Yes Not yet? No?
Supply (Current) 645,222 GBYTE 2,779,530,283 MIOTA 133,248,290 XRB
Supply (Total) 1,000,000 GBYTE 2,779,530,283 MIOTA 133,248,290 XRB
Transaction limit (theory) Unlimited? Unlimited Unlimited
Transaction limit (current) 10 TPS 500 TPS in stress tests 7k TPS on Testnet?

External links

References

  1. ↑ https://www.reddit.com/r/CryptoCurrency/comments/7iv20r/dag_coin_comparison_byteball_iota_raiblocks_etc
  2. ↑ https://www.reddit.com/r/Iota/comments/7cze8u/iota_address_reuse_explained_for_laymen
  3. ↑ https://byteball.org/Byteball.pdf
  4. ↑ https://iota.org/IOTA_Whitepaper.pdf
  5. ↑ https://dev.raiblocks.net/page/faq.php
  6. ↑ https://byteball.org/Byteball.pdf
  7. ↑ http://www.tangleblog.com/2017/01/03/byteball-vs-iota-token
  8. ↑ https://raiblocks.net/media/RaiBlocks_FAQ.pdf
  9. ↑ https://www.reddit.com/r/CryptoCurrency/comments/7iv20r/dag_coin_comparison_byteball_iota_raiblocks_etc/dr2wbdf
  10. ↑ https://www.reddit.com/r/Iota/comments/6lrf15/tell_me_about_confirmation_times_a_comprehensive
  11. ↑ https://twitter.com/i/moments/939251289141186560
  12. ↑ https://www.youtube.com/watch?v=pjIUsVDUr_s
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