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

Block 21240

Hash
0000002b8e00b2f10ce3c9f4a3ecec8502f05120a1390d9ed721bcc04aed7f4b
Confirmations
20038
Time
2026-10-12 15:00:12 UTC
Median time
2026-10-12 14:51:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
7d1344b51df97368e3dbf79f0b0f5905595061fe50de928f67b213f27c1709f9
Previous block
0000000f3a097438a1394e2927a6b1ac8a7aa4131d22d0eb83e3840652dd1707
Next block
0000003ce50170fe15418a4d3038d6b442c22bd2549aac64eb11dbfb7e53af9e

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 21240 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
b7b0a24d797e18050276f32ae97bc841… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7d1344b51df9…13f27c1709f9 coinbase1250