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

Block 21442

Hash
000000fb1324ca53a6d83527e30a615e50aa5cdd1feadc2aadf1adfaca8b2ed5
Confirmations
20234
Time
2026-10-12 20:42:13 UTC
Median time
2026-10-12 20:34:03 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f028fc9333d9a8b44881161da5ed11071cb0d4f9a49c2cf379a64f038ad97bc2
Previous block
000000678f9da292ea52acda64b509547ed647ed727c3dfb436e49f1e90035ff
Next block
000000f3e52d169c21c2221f6cdb8b9e3b62e5ddb4a915e2120928d095e6f39a

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 21442 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
e2d362b3b5c9273861fa721be40794dc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7c8fa6aa5947…b6b1e3da4070 coinbase1250.0000031
2df861d425ba…7b043716479b pays to P2MR1233.99994710.0000031