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

Block 21405

Hash
00000009aa9bd48fb716e6fbb0d7e6d29d4622b57801e2896cab5566e4e71cc6
Confirmations
20596
Time
2026-10-12 19:40:09 UTC
Median time
2026-10-12 19:31:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3344be64853d80d1a6afaa78b241c5d52e1a920a75a75ef6c785d528964cc688
Previous block
000000787a686014304e9b20107f8f507fd9c3138e5c9385390294281f30c879
Next block
0000003b1de529d387ad30c1f9b8214de9ea3b9fc370af9dd8a0e65c359976ba

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 21405 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
5dd9462141469f9cdb92017ea99f04f5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3344be64853d…d528964cc688 coinbase1250