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

Block 19154

Hash
000000ddebff913ff7ae1cb7e1a0216e4b35844eb29adc3614f17174f954e161
Confirmations
22940
Time
2026-10-10 05:03:00 UTC
Median time
2026-10-10 04:54:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9407d73b7117c5306cc8bcc1bc57c6b8ec68b8885406c4e82b126a428bd3b82a
Previous block
0000005a6b068e07a67f1057d2462136e08bd683cc47cc608170c182ee05643d
Next block
0000005b150f13b5aaacfd1a32b10fa990a23f27d766153f72ea69204d46fff6

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 19154 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
742273330b6cdbaf5d2310b5fed1e3ff… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9407d73b7117…6a428bd3b82a coinbase1250