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

Block 19714

Hash
000000359e3b8367b625d6c06f72ffee66e676d9cb97352c1be94f3f10c59490
Confirmations
21600
Time
2026-10-10 20:44:20 UTC
Median time
2026-10-10 20:35:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f2b35dcad1872fc5a140a8a34a4f23c00c6918c807ff4883e55f847f5cd2fa36
Previous block
000000425d5abcf973d8445b0d90934db3e569d049038562b9609f19fab865f0
Next block
000000a2eec7ac52b414f69fdeed0a3f21e92c9ae7b2d73781d669a3bc23c41b

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 19714 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
d56d5ced4b268240e001ff6b3484fa7d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f2b35dcad187…847f5cd2fa36 coinbase1250