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

Block 18526

Hash
000000932889147127d89afa7c764897492b83f43a5cd17fd3b7619820117b4d
Confirmations
22344
Time
2026-10-09 11:32:12 UTC
Median time
2026-10-09 11:23:18 UTC
Transactions
2
Size
6,706
Weight
15,325
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
0ed12a7bec7a07a1f520538d45d7b52b29ee6fc20076960d23a6d41516782ee9
Previous block
000000191d2ff8735d2818d944df466ea2c0f58e1ec046354b4ce9a66dd99f1d
Next block
000000aeb425d5cb93ee23585d6da850022b2ced005be121a5766b93eed7281a

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 18526 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
e517a714f930afdd6763fc1386cc7e1d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
63fa9d6f2fac…45b18075b3ae coinbase1250.00002174
ab96fe5be46c…1dff7a526620 spends P2MR pays to P2MR120.999978260.00002174