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

Block 21580

Hash
00000139a978320ff632ecf8400197af0eceaa5063ac525b3b7112f1e0a60567
Confirmations
19691
Time
2026-10-13 00:31:38 UTC
Median time
2026-10-13 00:23:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0e41b284f2036c36a2b22dad49f45e487e5847fe06a49953e21ab6bea4d4a97d
Previous block
0000013885eb6966dc047f4839971d774eb4a280cbae82da76298c4033961378
Next block
00000032754666a4c8131af4cf1e3f018237ac44d2f3477c385a72f06663c9e1

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 21580 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
f32039df470681edcc70c1b5b8d67794… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0e41b284f203…b6bea4d4a97d coinbase1250