Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 19190

Hash
0000005fd3520c2e4f45f70a67c379837e7b98f72fdf663ee53925fd2830ae7e
Confirmations
22658
Time
2026-10-10 06:03:01 UTC
Median time
2026-10-10 05:54:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d7b769c2332f03f9826f3e1d4cb79c74b5dae4490caa077f3e7a2e6b7c190097
Previous block
00000040ea9c80561f4c85f3bc9a27a48fb3abfada47342c1bce1494df2a360f
Next block
00000055f5dbf089b9458162cdb48622cd931840aa06f1b25229d34c847f9a2e

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 19190 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
87f750b956945bf377b2a38ed6dab8f0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d7b769c2332f…2e6b7c190097 coinbase1250