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

Block 19749

Hash
000000bfe7d7fd16b836d6b37578c4e3a27c0cc834a2059bdc5ed89bc72072d5
Confirmations
21515
Time
2026-10-10 21:43:07 UTC
Median time
2026-10-10 21:35:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
22ba0304cbe92c798b4d192a3c474ab36278843a9883005e839a6a4b0dc928b5
Previous block
0000005ff3a1467221402afee326f4bfad21d3bc9579b0292b6470352c9ee9a8
Next block
000000c0d87c32821173e9cdab157cb379003895b3b3cdf8913485ba5553a427

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 19749 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
f9453e8ac4aa184bcea6778c784a36a8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
22ba0304cbe9…6a4b0dc928b5 coinbase1250