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

Block 19863

Hash
000000a659a4bfcc5ca7d3355ab9d87de171b712ca79d00c8eae8cf6b9fd02d3
Confirmations
22340
Time
2026-10-11 00:51:12 UTC
Median time
2026-10-11 00:43:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
339b038e710f4e8774d1bcc620f32139e736e6da6add70c9bee10db72b117e92
Previous block
000000bc59e51e81ab01a72f82918b496851b7ab99b9a0031fc6b5d0028b4af9
Next block
0000011490d7056beed12dc064703d228c428da6a2c535c3640cf2be7d180565

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 19863 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
e174e98884676c5f255a8fa73a53a766… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
339b038e710f…0db72b117e92 coinbase1250