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

Block 19085

Hash
000000c3ca1ab5d84ae7fc50e8346737ff5d3431f31973b6079a7bb5e36f7fa8
Confirmations
22263
Time
2026-10-10 03:05:01 UTC
Median time
2026-10-10 02:56:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e51299a36ba1fc10def734af4b3c1c3087e2220408f624f1ab233e364953cbed
Previous block
0000000d3ebc90035f54d5dcb0ae17175924026c59857a74cd26c802cd950ac2
Next block
0000010fce4c0c53314fcecfaab176f6414b1bda81872a963d86151b1ea62e84

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 19085 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
ee96567476121e588ba0fa147e37e4cc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e51299a36ba1…3e364953cbed coinbase1250