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

Block 21168

Hash
0000005d5fb8b88dd5ee87cab94afc33ff80571075d180640f1fae2c4443539d
Confirmations
20356
Time
2026-10-12 13:00:21 UTC
Median time
2026-10-12 12:51:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c9eea294f52418ef097c3aee24f4e690ea01e534361222d766ccbdd4f7e08ca8
Previous block
000000659d82ad7e4874d2b63fdc79742bdef41060f3da9d0c460db92677f252
Next block
0000002ad9ee79c72734e2460f539114540f60424282cfdbeb064e9e3a4003e6

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 21168 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
bf66cc058bf2a65e43c9cc60556289c0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c9eea294f524…bdd4f7e08ca8 coinbase1250