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

Block 18953

Hash
0000006a5f29ec388048d4ecb2a8baec8f9444ee06c4fc4d2283b0f9c8ea7f1d
Confirmations
22393
Time
2026-10-09 23:19:05 UTC
Median time
2026-10-09 23:11:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ee093f59cd3e2d4af788c2b2db17517d278e0be73343e56ddb233ad2f5eca190
Previous block
000000c62a64eccbfced19ef1c3aea4c87a5835c26eb23a73e83c18bd1298fdb
Next block
00000110b26e1b9f3bb69244591075b21bed814c5d88c35d23ac9739994c23bc

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 18953 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
b4a53c6db7cdb334a8172f6f63e8cf49… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ee093f59cd3e…3ad2f5eca190 coinbase1250