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

Block 19597

Hash
0000009f4d748b993059d8eab49f250b22feb5aeefaf7a15d980571679c27cf9
Confirmations
22651
Time
2026-10-10 17:25:23 UTC
Median time
2026-10-10 17:17:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a481e76669575d69b1694c1c1e912ef5c70da7725c0dc0b902927ccf491995d7
Previous block
0000009f158cdff3214db996f45d298e18126436712d86a56d64c197c883cedc
Next block
000000bc29b2b6a393f7912df39844de9f8c0829439e7297e2024558cb06997c

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 19597 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
13fb804d3f5a7b8d126f319996fce7cb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a481e7666957…7ccf491995d7 coinbase1250