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

Block 21190

Hash
000000304a3b46b4e4b6dd6085b96e5ef650321f90c3f2ff9003582029956456
Confirmations
19675
Time
2026-10-12 13:36:57 UTC
Median time
2026-10-12 13:28:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
fb0b5ccc84ca201ed04647f71d0d6dddd1cad5881703f33b55b95d0f483f9d22
Previous block
000000c6b56d1499bdfde3717977bebff07af97d69f484a647de342fa19e7a25
Next block
000000b1499e383882fc414c91399e2f3a9caea49eb30e598fe01937460d1c07

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 21190 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
104e6488853515a344a1ec65b06e9ada… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fb0b5ccc84ca…5d0f483f9d22 coinbase1250