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

Block 21886

Hash
0000012995e2a6b9e48e8fa65ac3ce26d1cc947014d08afb4024893a5f9064ad
Confirmations
20322
Time
2026-10-13 09:02:54 UTC
Median time
2026-10-13 08:54:01 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
9dfa9af939abfbeb834620d4cf97a27ccdb7d7fbfc42c6ada278055996bc1a23
Previous block
000000a8814c0f4dc0372c4b5fe3769348d8e80c762f866008914a86051c74d0
Next block
000000a98df7ffb6126f9613b7928b899b88a5faef788dfaacf5607521a5f807

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 21886 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
d32b947ae98f0883cd69ee2b1eca77c8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9dfa9af939ab…055996bc1a23 coinbase1250