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

Block 21518

Hash
0000001bdf700dd21d757a697d84e3fd5b6a5c44697350bb0e51abaf9e1f66c8
Confirmations
19983
Time
2026-10-12 22:48:05 UTC
Median time
2026-10-12 22:39:45 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6d6b7a2cc0fea6b935c8b1c989a3388d419185099c81ef297da0c99e5c10e8af
Previous block
0000013413d2ed6d69f25dc5b4500b12eaf04af20312e72644adbb3c55fdb76b
Next block
000000cb951376099c6d204f9696aa6973ec368bce0df420b0905b7124c66ed8

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 21518 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
76139050bfde945e26a2e5a94ee5e2cc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a85519b25c57…7990757ac62a coinbase1250.0000031
7a4e95f85ba1…6ad6b1adf6a4 pays to P2MR1210.99987580.0000031