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

Block 19351

Hash
00000039c6b39d44f79da205b09583bd63af47aadbd734caffcc9c498a06db87
Confirmations
22075
Time
2026-10-10 10:33:55 UTC
Median time
2026-10-10 10:25:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8e9a0bc68e72d7e76122dd4f065d18630e0ded2450f37b6e98c7e0aae18d7d44
Previous block
000000698950d5d54427ed1f313fd2e9d5b3fb7d3ecf55268340c531a30f4a07
Next block
000000f167df0e3ee928e911264f8887564beac7fae7a8165d6b007e5e386f1e

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 19351 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
907a367c84728fc26280ed2a3a1982ed… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8e9a0bc68e72…e0aae18d7d44 coinbase1250