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

Block 18846

Hash
000000ea257c167824577c5f99357b1bb0ea427686a5ae04caa82d1ee5870426
Confirmations
23485
Time
2026-10-09 20:20:21 UTC
Median time
2026-10-09 20:12:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
31fa787a3b554dd56ec5f3d7eb1f7d98af598bf39de783e3402670282b8c9f7d
Previous block
000000a3180763b2385f843aadd428b71455ea1e24c72083bc4d6e5696045110
Next block
000000ebc87c0065dc7a0871a84e3f01500078bcb92db08986cd2ff9b52cebac

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 18846 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
4e62ebbe32d222a058feae164ccf942f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
31fa787a3b55…70282b8c9f7d coinbase1250