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

Block 21685

Hash
0000012f3e8576e3feb42f8a484f8ec90094586bcc9333c26b16d1a362c02e7e
Confirmations
19085
Time
2026-10-13 03:29:38 UTC
Median time
2026-10-13 03:21:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
baefc2efb7517bf495322d30d0cb9c99e46730017c6d997521d11e119d6846b8
Previous block
00000053391fa3da1c09f7445730e6e5b54cb0000d4ccc7626d05073e4678629
Next block
0000001583e39b3627b321e977d494839b4b46902f89cf5b942b3ec58a3e3b92

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 21685 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
c4d77f8165ecfbe0a250f7bcd28cf473… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
baefc2efb751…1e119d6846b8 coinbase1250