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

Block 18566

Hash
000000571433b3fd4077f7d34021d29b3a54e4e56bdfd8d6eb0eeb53003ca82c
Confirmations
22485
Time
2026-10-09 12:38:25 UTC
Median time
2026-10-09 12:30:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1c7967a07d7b534aa76d85c80263bfe62d4a172950661c7f7caa588a0625816b
Previous block
000000f3d6e957ec5ff9f0022784890fea70fdae8ba08ec5592f600489fa8522
Next block
0000005339f4c3cd583e91cf50b0a977f7fc17a8b0df9e65bf0716f1b9cd06a2

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 18566 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
51c2bce3490634357783e3a70a420ceb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1c7967a07d7b…588a0625816b coinbase1250