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

Block 40421

Hash
000001b70de9b41a5a965a67ee6432dcb76980ba94aa4800c2fca06ccc3dd68c
Confirmations
8508
Time
2026-11-03 05:33:25 UTC
Median time
2026-11-03 05:25:29 UTC
Transactions
1
Size
2,773
Weight
10,984
Difficulty
0.0014274344
Bits
1e02bc8c
Merkle root
246e1d0f811f396ee599a335cf66fbbd031e561354ce14f4f0f7c3e120f60315
Previous block
000000a876698d8691f755e14d0a70f3adfd7b1aa847d3a030bd027fe7801a80
Next block
0000008bf42468a3fc5aa111ac09da27f5680518b552aeaad1c5ea2e605a5285

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 40421 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
ff84ecaf53c7b446a2a2508071c7ae8f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
246e1d0f811f…c3e120f60315 coinbase1250