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

Block 21117

Hash
0000007da6ae5c99b9efc46df96c5180ca9e3d407a50d4b3974217a72f8f37db
Confirmations
19718
Time
2026-10-12 11:34:36 UTC
Median time
2026-10-12 11:26:49 UTC
Transactions
4
Size
7,185
Weight
16,626
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0637913548382752c70b0d635ed734dcf74461c23d4214409eb8c98b013b1268
Previous block
00000005ea1856bdcac6c3820cfe0221d93475eebb70e49857e6086757548e96
Next block
00000008f31fa456ec9fe06f8cde65e9ad1a4b093ab8c8fbb4a1d05e0b43f4d6

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 21117 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
b41dc121d20d2af9a6d8a3715cafa6f6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0bc816a8938d…2c351a3a56c0 coinbase1250.00002828
59cda5f16908…ffc8f25b200d pays to P2MR1246.99998740.0000031
d2f47d42c91a…ef5f99082e3b spends P2MR pays to P2MR120.999996560.00000344
ed5264f78a03…c68795f05ec2 spends P2MR pays to P2MR120.999978260.00002174