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

Block 19945

Hash
0000005e7a877482f63c4aea13a4a5282dbc8c915693ee3177d27f8b2a46b000
Confirmations
21840
Time
2026-10-11 03:06:20 UTC
Median time
2026-10-11 02:57:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
0a365b158bcafa9a8723336cf94e8dfbf4432c2ba5c31bbb2000e162c14fe831
Previous block
00000117c03cc52aaaf3bc1c4d01325a82040e215a364a799f68ddbb36b8948e
Next block
000000e30f950a70b2a7aacec06f8a6d8f607d2d15bff51e35143d8961c85c8f

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 19945 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
1592dae7936536e1ad22c494752fa36c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0a365b158bca…e162c14fe831 coinbase1250