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

Block 21071

Hash
00000110efa9d4b6911191baf51661f46c7ed944460f0c6f25cb3535e783dfac
Confirmations
19675
Time
2026-10-12 10:19:37 UTC
Median time
2026-10-12 10:11:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6f144a77de6601bc4b5fc1fdaf0149c72690b3a0f8d8229c6ef7ce1c5885c067
Previous block
00000057b61a33cd69e88ac1f1b3c4eef47a547d98493e70203206836f5adcfc
Next block
000000eef3994062f8164c5bc537f9dea322b0d67a0896fdea24f6ecbf8afed5

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 21071 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
1138a5016203ddb3cf5997617eab36de… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6f144a77de66…ce1c5885c067 coinbase1250