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

Block 18578

Hash
00000095ab9fa0adf52541ec252f6854baec6992e711919b07c202c8883a3108
Confirmations
22502
Time
2026-10-09 12:58:36 UTC
Median time
2026-10-09 12:50:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
22ab81b8a9657eb902cb1fd154e28d167ad903908dcbcdc8983011d9c04359eb
Previous block
000000bc823672dcbbb57b89782bd825ef9d3ef603c93dfcbf098c65f6f87e50
Next block
00000020c50920aee53696a75f1864d81a43d1cdb7e1745bd32f1854cb23b87b

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 18578 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
af3c28e5fe7b70eaee5034075c78f938… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
22ab81b8a965…11d9c04359eb coinbase1250