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

Block 21626

Hash
000000f901fe8e21d066c45ec2a0e4bbdaf50cb9fc454f90fd5c1bf03e3dbe40
Confirmations
20237
Time
2026-10-13 01:49:58 UTC
Median time
2026-10-13 01:41:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2eac6dfbabcae8e359f11b2889adb01803a16c9699445db1022aa7dd1251c30b
Previous block
0000001f804f8d30f260d3091aec30c85ccc4eb2e2ad379acba36a9ba53e266c
Next block
0000000613e6e3a5d4afa53330b8fb43b92240d5253df85e968b6c5c03f5e033

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 21626 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
b05ac516573162e3a557bf91475c8609… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2eac6dfbabca…a7dd1251c30b coinbase1250