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

Block 18401

Hash
0000003554a6277becdd71c3a7a41f9aae119a391a164fc1f467389e5f8d3f37
Confirmations
23417
Time
2026-10-09 08:04:47 UTC
Median time
2026-10-09 07:56:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a0663cb037b17efad23826e93e27132677cc8e8df193226855da5163eff8bff4
Previous block
0000004e5ba05bf38311e1ac220e19d67c8ace027fb0b52e524125bef4d00afa
Next block
0000000b75c6f90b625f8713c66e942068ec864f4fee7384a9e5fb37098e93a3

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 18401 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
347d67bfe171b4ef1a9262b0de52c79d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a0663cb037b1…5163eff8bff4 coinbase1250