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

Block 19318

Hash
00000062ccbd202e7d1473368feaddb515708ad7178a6afa40eb11cd5f25066e
Confirmations
21781
Time
2026-10-10 09:38:29 UTC
Median time
2026-10-10 09:30:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e87bc66937c3166e9f99e70522194e35ba3ed8801c70dda5b0d27b14d46cae01
Previous block
00000108d8b20611d828f75737b4691ad2dd27b5a5857f2dd9eb10a82a0e313e
Next block
000000fa78c5793ff7ede4f3454b062ebbb9b952fa45589f1add6ac04f735021

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 19318 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
050b958e5c1e3325f83e86cbf1001d60… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e87bc66937c3…7b14d46cae01 coinbase1250