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

Block 19513

Hash
0000009a3c5e254b2496a1b0adb1abfc682b39a64b13c423949702d159a1203e
Confirmations
22660
Time
2026-10-10 15:04:57 UTC
Median time
2026-10-10 14:56:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9dd08805ce8bc5cf046cb2f7e0a2dd083d45a46cf066270cc966c20243e08598
Previous block
000000ddb4a5563b642660ae6a3e9b44e529c81e9240f49cce9fcf74ba8909a7
Next block
000000150a0d5c2eee2ee9cbffe52f04fc4172b3005e883ac6607e23bfec00d3

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 19513 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
6e90c03ed8d818c48649acbf9abaef36… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9dd08805ce8b…c20243e08598 coinbase1250