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

Block 18455

Hash
000000fff798545d5e90b0afdd915bcf084ae4d97263726097a45af69eabe6a6
Confirmations
22442
Time
2026-10-09 09:34:17 UTC
Median time
2026-10-09 09:26:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8a1961152c4d653bcd142ab7a51efc54227aac64946ecd8c1b9265470681f302
Previous block
000000b4c88f495bd9ea2ab00576330bdd2b556fe0110c327992dc616d42f624
Next block
0000006bd9a20e9332d843cb333c1294d4c98467a0fe63effe231ae968d3aac6

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 18455 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
b3f1468c988e82853f50c11d8194e057… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8a1961152c4d…65470681f302 coinbase1250