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

Block 18605

Hash
000000937804ad8043f544279d94b2b3e2492bbc16b091091b7384559a30fd3d
Confirmations
21565
Time
2026-10-09 13:41:22 UTC
Median time
2026-10-09 13:33:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
85bf8a44b06234839feb067e1d9cac5793c5b4c6cc67be015a734b49b791ed6f
Previous block
000000d7e9f131f8f937c7fd1c9ba798c20e1b66c495dbc856fa62eefe7d6c50
Next block
000000bdd3c1734916ec122a3e5aa0faa543dd78c36e8dcb50b85245f312a38e

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 18605 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
087113784562f810b1c76b577225b2b3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
85bf8a44b062…4b49b791ed6f coinbase1250