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

Block 21696

Hash
00000019bcad4bc71f8e2a725eeb5f24a553051ee144a9890e796b72d4eb1d81
Confirmations
19666
Time
2026-10-13 03:47:10 UTC
Median time
2026-10-13 03:39:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
b864ad55d10f4f10494984268b420bf7de3e68e35c5309dd28d038b8106515fb
Previous block
0000005e3b8175e7fb0461d11a26a64017f357c97e7a0bf4731d8296484fb958
Next block
00000035408edd07336edcb3b06fa118da09295fe1d421f8c6426914512c0058

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 21696 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
6771c3ff543b45ff9ab2fd0461bcf10c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b864ad55d10f…38b8106515fb coinbase1250