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

Block 21867

Hash
0000011101f0f9cbc30eaecc300446a0f693662a1a0f17096400f1d25dd4370e
Confirmations
19642
Time
2026-10-13 08:31:15 UTC
Median time
2026-10-13 08:22:55 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
39714ea1041d2b27ca397b2ec86e48c317bcf3508ad5377f8430c549941f6422
Previous block
000000c7a23d6c7df32dfe011dd5b9b5b4d7080544dfef755b155a19fae0eb6e
Next block
000001068e2e7f348cd27f719c7d41ad69448ed0ce5d0f0eb678adaf4e96d802

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 21867 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
7d658fd5619c3d53454447a01bf44b9e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
39714ea1041d…c549941f6422 coinbase1250