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

Block 21356

Hash
0000005a25327df74076dbd0f8181c9fcbdf799ce588c7812673690e2efbff8f
Confirmations
20702
Time
2026-10-12 18:18:59 UTC
Median time
2026-10-12 18:10:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f1fdb8fc702fd675d970afd7c4244f8a867a8d10d8c030538de96243ffd850b6
Previous block
0000013c3b6edf50c79b686a2ab07386af2d6797bdd23df89d99abe73bb8e5c8
Next block
0000006b8534be91df08c40666800bb5b88d7a24e2f19da6955a1398c6d55af1

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 21356 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
8b7021d8e6add9481b9549f11a4f7227… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f1fdb8fc702f…6243ffd850b6 coinbase1250