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

Block 19167

Hash
00000085f00109a6c800ba9f2ab8d6c034f5af1cbc96d101759a2d11ccaa04ba
Confirmations
22987
Time
2026-10-10 05:24:06 UTC
Median time
2026-10-10 05:15:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7168510fb2a93ee8f67fea1b673edd28ab40ee8cc83e6564ba4f6817d3ab21f2
Previous block
000000a2685ce291210a9b44348899909927a78b733123934dd5cb27aa0aff41
Next block
000000bc4b612dd4a016a75147eb043a6ee92857b4ccadf174d6e15a1c7a7d86

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 19167 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
6043075180aef757690833d5b90ad745… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7168510fb2a9…6817d3ab21f2 coinbase1250