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

Block 18164

Hash
0000007a37acdc17d3ae80152b1f1a9c058d1bea4a106a877bae625bd3183095
Confirmations
23186
Time
2026-10-09 01:24:54 UTC
Median time
2026-10-09 01:16:44 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
28ca89f18b7221c7f96efda9c43a306207a191a39e6cdfdf3816dc90bb6246ca
Previous block
000000e9ac20738b7bc2f701b7827dcafc5fc981a55ccd3c832809126ac7ba47
Next block
000001172fde8b6e7a0493a1535761619a4199bcb50af8b41ab1f37988576097

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 18164 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
54f8abac02a329d93797bdd1f56ee8cd… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
247608ef7694…7b7e24b7dbfe coinbase1250.0000031
bc74280d081c…7ccc94b1824d pays to P2MR1234.99995020.0000031