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

Block 28721

Hash
0000016f6a847b6b5c2b28cb31fdaa38c93ef43f006b29757a080144d42637f7
Confirmations
11578
Time
2026-10-21 04:40:55 UTC
Median time
2026-10-21 04:32:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0021387367
Bits
1e01d38f
Merkle root
419b72fe67a17264a732f9279d749b078f3e9b7d3d08af6f5a97feae18688090
Previous block
000000c1caecb5687d12dfc5a3423b09cf60fbe8e3d3087c248657071e727bf4
Next block
0000009d5caa3c79bc592dff9d41d1de9a30283c05b1a059eb9ecdc9bccf1412

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 28721 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
39bd644ceb2f84e9d7c827ae8e3a7012… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
419b72fe67a1…feae18688090 coinbase1250