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

Block 19317

Hash
00000108d8b20611d828f75737b4691ad2dd27b5a5857f2dd9eb10a82a0e313e
Confirmations
21767
Time
2026-10-10 09:36:56 UTC
Median time
2026-10-10 09:28:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b0e87d7840896975ed5ba59527c6c31b2b371877bf0ab61b9bc6de52b075941a
Previous block
000000950894b489a43f20982e8d2deea8163cf7671d0cfd119a625b5c4c86f5
Next block
00000062ccbd202e7d1473368feaddb515708ad7178a6afa40eb11cd5f25066e

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 19317 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
049f27333a90b6897069de80d9968a95… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b0e87d784089…de52b075941a coinbase1250