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
|
| 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
