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

Block 21902

Hash
0000007e5e122ea9ced22b6d688e2d787cf8f0be184ea14e5cea9960b9318cd2
Confirmations
20145
Time
2026-10-13 09:29:48 UTC
Median time
2026-10-13 09:21:25 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
5b6fa843e71b9fcf0d0ada924d82989de8e8a001e8781e0d6416121323444ecc
Previous block
0000006abde9db1bfceeaeb74a0de7c29403685d6ccdaebf519165b11011f49e
Next block
0000011a31b0739b41e71a08043c3295bd0d6b0714a7033d2c9de7dd165ef551

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 21902 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
81a842130ee328d71a0da9a74a6ba28f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5b6fa843e71b…121323444ecc coinbase1250