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

Block 21477

Hash
0000010c3aad1d98b6b1505e10684eb4395274790202870da327c56d9b0b80e5
Confirmations
19640
Time
2026-10-12 21:39:59 UTC
Median time
2026-10-12 21:31:44 UTC
Transactions
2
Size
2,976
Weight
11,592
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
061e3cb8f48cce5f798e93f768f730820927f5c3e923351d36482a1823fecb38
Previous block
0000000a5a1341a417579bb96ba8a1a3824a6b2ebcbb9fbf6e967860ec615080
Next block
00000000d8d7499228b54913e1203a0e3e165c46559ac4edf54c97ffe601d10d

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 21477 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
f428c9f758aa4ba0301e4b417da93fcc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ebf48ff8782b…65801ec1b133 coinbase1250.0000031
d621bfd05ce7…3585d622bc00 pays to P2MR1225.99992230.0000031