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

Block 19215

Hash
000000ab0c11e44d915a07611d3232e0d60919b599eb37062c1a3df220e66ad8
Confirmations
22590
Time
2026-10-10 06:46:08 UTC
Median time
2026-10-10 06:37:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4867a8b87f1fdcd4d70e7458a54346cee7bcc37a3de3d0de1ac0a950cb13bd1c
Previous block
000000d412425fe7d44b08cc9de05b452d8e8e5fb9e80caca5c456736240ea51
Next block
000000306ce77ce3fa3c290bd273d167c7560c58a1a87567fd0891c59d1f6f61

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 19215 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
0e2ab8d53a3cf6031a210d85403587d2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4867a8b87f1f…a950cb13bd1c coinbase1250