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

Block 21401

Hash
000000c9c2e834996352c7833ac3fb24d59501fc3e0e55cd55543bd58ecbc35f
Confirmations
20672
Time
2026-10-12 19:32:56 UTC
Median time
2026-10-12 19:24:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6ca5952ac704cb31d8e81d02ff5eb35e16f12eba4bd3f517fa726ed6a1c4a080
Previous block
0000004cfef1112431c52fe23a90db5616005c39be9b5c063c48e55216580771
Next block
00000059e1233a8dbe89cc0639ca463c191110103bfd48717324bbf6525b246b

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 21401 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
c1ec54728f6f4c0cbfeee96cc4846fcb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ca5952ac704…6ed6a1c4a080 coinbase1250