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

Block 21789

Hash
0000013c476297a5234b4ed506342ea9a95ac76fd3da40afdab5ec00ccb62d03
Confirmations
19947
Time
2026-10-13 06:23:32 UTC
Median time
2026-10-13 06:15:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e2468b2b7ea637007a91bfcc127abe8596e139d475b580df9172231e1dd290b7
Previous block
000000e836aea940a353d8b69526c99edbdb53584ec23241dbe50124b2ff2cf6
Next block
0000007beda43590cdd77cb8176977fb1e5d1b282d5431c4ff1f141f8e6999be

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 21789 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
f06b90fc34e4cc1ada1046ade2ec0868… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e2468b2b7ea6…231e1dd290b7 coinbase1250