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

Block 19187

Hash
000000471b3127bfaff67c486d68db751c99f2ecc28c4e679db88d2f65535cf6
Confirmations
22691
Time
2026-10-10 05:58:18 UTC
Median time
2026-10-10 05:49:28 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ef93e722e640fcc9157f7e191ba96a5cea50a85f6fb8127b5f7698b759ee5fbc
Previous block
000000969e3adb85e63a477b84c7174b0c40553e5d68f6ae32ad334e4faab03a
Next block
0000009f13a8fe5dd8c8459c146176ac18f3caf169fa8acca4b6e484897f23a7

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 19187 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
87bc0e35b5bd282c991b9260de1e8e7c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ef93e722e640…98b759ee5fbc coinbase1250