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

Block 18157

Hash
0000005dbe4da421b93e5fb0d395478875d2fd2218da53a53d143bbb5dcd33a8
Confirmations
23428
Time
2026-10-09 01:13:20 UTC
Median time
2026-10-09 01:04:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4afde97f67bee32bae5fa4c4aaf3e28b589adfbba032dfe3165a194c0956755b
Previous block
000000abd72c68bbb5f30b5a21e799187a8004ad4ddba3668e3d6d15aa9e9668
Next block
00000111c0ee9ee14f4ebd12adfaf29b0afdc3d8f8241420459e228d40c27201

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 18157 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
280ccda5d15dc88093cd10ec5860e1da… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4afde97f67be…194c0956755b coinbase1250