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

Block 19451

Hash
000000d5fd504593fe842c454e5602bee218145c88e003454b386676b6ce2039
Confirmations
21211
Time
2026-10-10 13:21:40 UTC
Median time
2026-10-10 13:13:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e12d06570cb2746e123c6bafb6a3ea6323f8745302f44e7a36904242b770c2dd
Previous block
0000007622d1f27a79a9a8a28f132d9e9673ae4d1784647da8864d20b5dd3a24
Next block
0000002dd736f6778ea8da80a26a56cd567186af68ee7a7c4014f6d3cf92b21a

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 19451 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
210557aee1f8f8a35801aa83af2787fc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e12d06570cb2…4242b770c2dd coinbase1250