Block 18421

Hash

0000006f61f65f43e6b8646b601d2aac21aa2ae2dcf7235d6f3e20c0e72ffe3f

Confirmations

22086

Time

2026-10-09 08:37:48 UTC

Median time

2026-10-09 08:29:40 UTC

Transactions

1

Size

2,772

Weight

10,980

Difficulty

0.0035089589

Bits

1e011cfb

Merkle root

72db966e0558a833dcb9b3af4db1ef355dd0370984d7ddce9d34e40786da36c4

Previous block

000000f22b168d8b62cdb3e0aae7ebc8ab4256787331833c3d789c9dbe5bc094

Next block

00000000f058e8b5ffaf49b8e2efe64321ba2cd577fc4ba2e290cca4dad3a4eb

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 18421 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status

In the form M2 requires, followed by the signet solution push (the classical signature)

Signature

22ab0d6ba2f99cbdde5f5fc22c704e9f… (2420 B)

Format version

0x01

Context string

SIGNET/PQBLOCK/EXP0

Block key the nodes require

SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions