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

Block 21895

Hash
0000002abd4069371ed65a78b5684ae6bec256558c7b7f5115cc6a9044bfda7d
Confirmations
20223
Time
2026-10-13 09:18:16 UTC
Median time
2026-10-13 09:09:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
91bbb7eaf64edf1a7c714b4fae490c34a8de0be290a9a232d4367a15b00f346a
Previous block
000000872fa1236f21542d21df2b609c0db8bd98bb0903059470c36597cab9bf
Next block
000001204d447a5fa7ae0a6942341eaaf9f19697dc3d75b06d409b8b7a66aaf6

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 21895 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
0bc0beed1ce9a3f7eaa90b4fc056e334… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
91bbb7eaf64e…7a15b00f346a coinbase1250