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

Block 19227

Hash
000000b899a4b02b44211d57c78198b145ed001e6477bc96491bcc3cb4f340af
Confirmations
22877
Time
2026-10-10 07:06:35 UTC
Median time
2026-10-10 06:58:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f00e83bd8ee6066853d81954c0ebd1da73bc7ac31c7e2e08f1dee5f6c89be530
Previous block
000000e33e90810d79aa2a728ee4db9b7f5d65171ffc9fccd5251c7065cf200c
Next block
00000088be7c574fc3e150ef2fd4fa6b665a035e6457958c005e7d98404326e5

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 19227 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
da7508311aebb76c3cd5177796bfd1a5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f00e83bd8ee6…e5f6c89be530 coinbase1250