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

Block 19438

Hash
00000111d0a5d77c5a072b9ae90abb6782e5ee488a3ac71f0936a79efebd25f6
Confirmations
21834
Time
2026-10-10 13:00:31 UTC
Median time
2026-10-10 12:51:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
abaacd80ccd641f7ae239ef31f81d4601f26363907095fe5c44425e923c065e0
Previous block
000000fef89caeea9f09b28231714326c5c124c28509c0a47d9edc83b93fb29b
Next block
0000003172ca00bcff3093067bd2f5c1c75bf04bd3f265ee3bc6fc0a46cdec06

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 19438 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
36ed354bad216e3f01f5fad2c9a842c7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
abaacd80ccd6…25e923c065e0 coinbase1250