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

Block 21998

Hash
000001339007e220faf21b7344c69a05a2efe472fab22c6666c8a1ffbb12ed3d
Confirmations
19110
Time
2026-10-13 12:11:19 UTC
Median time
2026-10-13 12:02:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2368a599a4b4062b73383dffa80628607858136af69c9af3eba7abde7a3f5d5d
Previous block
0000005af928acf7319809a671e521ad7b65fa80e7dee26aff2b37d5bf9182d4
Next block
00000010f7592d5afc85786a2e23d5ed9d424b9cabb3e8cbd0bf5ff91e522204

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 21998 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
c419310bb02b4e5f1373a98b9cbc64b9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2368a599a4b4…abde7a3f5d5d coinbase1250