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

Block 21609

Hash
0000003a92d9f06c7c4cd49b5885ff06be26fa6c4d0edc4ea1907ac7e932395d
Confirmations
19420
Time
2026-10-13 01:21:18 UTC
Median time
2026-10-13 01:12:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
d044979e57a0975785200220ed494992b50b1d2eafe85329a05e2669a4ac0d56
Previous block
000000b5df4cffd6ddf64d8bd0efba7351cf507af739584d3cef3289c64de5e7
Next block
000000364a2702459c30bd8dff8847fed20dfa32b4787299f20aed6616044ee2

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 21609 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
65cf1e55a7764dfbe96c6a95ffbf3526… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d044979e57a0…2669a4ac0d56 coinbase1250