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

Block 19937

Hash
000000cb8c572e1d0617ad2cd026e074be712fa00cf3bb5d280382ce3738d7a9
Confirmations
22069
Time
2026-10-11 02:53:01 UTC
Median time
2026-10-11 02:44:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
eea6684e8901fd9c2e58edcd9badf97a1c181f83e8daa2381d831e90eb95543c
Previous block
0000009a8314ccbb57e39037167b6cc6814557335ac4f494ade29c0097c7d746
Next block
0000008d15964e38fd5e4453f8d05bd1bb2d69a269cdc8873c9ddb49a587ef3d

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 19937 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
7dfa6ae124c29c44f4764e52a5f26f31… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
eea6684e8901…1e90eb95543c coinbase1250