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

Block 21715

Hash
00000000dab9d8e0cd842d2076bbf1f2ac860e471a391ce6f08866e42be362c4
Confirmations
19352
Time
2026-10-13 04:19:36 UTC
Median time
2026-10-13 04:11:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
b0f067cbc796e38dbc2b0d567c8ad2dddf64765d0a0cbda2413d11fd4e2da0d2
Previous block
000000b3086f78f84ae17ddaa20717eb9535f3ce341ba72c72f39414c66ccd6f
Next block
000000c0475782985410e0df292b199adfda566a1c689de3abc7180d21658ee9

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 21715 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
b78b2817b802cb328e698597bf947385… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b0f067cbc796…11fd4e2da0d2 coinbase1250