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

Block 19750

Hash
000000c0d87c32821173e9cdab157cb379003895b3b3cdf8913485ba5553a427
Confirmations
21392
Time
2026-10-10 21:44:46 UTC
Median time
2026-10-10 21:36:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d5de00c66b6589b5800ca7c49aadc7fa2d8eaf23c30a668d5e5b6eb770505d8f
Previous block
000000bfe7d7fd16b836d6b37578c4e3a27c0cc834a2059bdc5ed89bc72072d5
Next block
0000004b27f68f32bf9bf48c50953ca22c4db8897b35437786688347806e3421

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 19750 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
a25fc2ef667a23ed9e4d06472e0ab9dc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d5de00c66b65…6eb770505d8f coinbase1250