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

Block 19578

Hash
0000000b34e78dd22aa1f8392fe1393b6bbef0f551b65cb7d6b1454b89c47938
Confirmations
22404
Time
2026-10-10 16:54:17 UTC
Median time
2026-10-10 16:45:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8816f48b460f2db5b6d69243181cb9b651504287c66b74a087a71130ef8e7744
Previous block
0000002a48184093a1ce271fc463bb2728b5c3bc4cb6f6876572d582e2d0d8c4
Next block
000000b66e497ad189965943316bf1499ca20ce480fa8e13b52815a06053bc26

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 19578 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
e3ae42071b979ca5b51c947a6e02c942… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8816f48b460f…1130ef8e7744 coinbase1250