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

Block 18068

Hash
0000005fae36cae9411aa117b3238275f60b5b70d303af54d0565ad7e1f7e0f9
Confirmations
23947
Time
2026-10-08 22:43:02 UTC
Median time
2026-10-08 22:35:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
ae8d68199b371dfe674086a05f19c389af4e3486eac4ad125b50bec918c3ceba
Previous block
000000031aa06d836537e97bf6058649433f9bb7735f4fbc612a96212d9b3b32
Next block
0000009ab54cee0fe0cd98f1949c8c54be5243a9b4bfff68650dea0521c6dffa

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 18068 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
a58809a899e590559afdba7b89daa36a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ae8d68199b37…bec918c3ceba coinbase1250