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

Block 21754

Hash
000000cfa4141889d6941f2dbc3b210a63fd2dffe39480fa2162be3ae72e2103
Confirmations
19688
Time
2026-10-13 05:24:31 UTC
Median time
2026-10-13 05:16:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ddb391a8bb0c6ebb8d2e867a543e73b7ffe76cc592074c44d21e2589e1d7ee20
Previous block
00000108c803581a1138c115f23c7bcdd5a25d7339fe5e47f37476959e1688cf
Next block
000000ad561d7c2b07a0cfa1ed3b7fe5ab47559bfc0bfe53863ecbc90d6b7f1f

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 21754 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
9a6e1d6247cf41e8d80403245964044b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ddb391a8bb0c…2589e1d7ee20 coinbase1250