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

Block 18223

Hash
00000089ea0e731b091ddeab4199540e8917367fa35c137863cd1f37f5c21321
Confirmations
23895
Time
2026-10-09 03:04:09 UTC
Median time
2026-10-09 02:56:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
655d3a2245e25834b69a1a41e2ccbc299afe7b11756c116436010dba1f8b9775
Previous block
00000050a56da95fcf31e65d1a59331db41c11e3fa47602a6872c4279e1a6687
Next block
0000005ba5085339bc0a0ec73af24a6f7461353375a9d2ca52b23076d84f306b

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 18223 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
8668fa6bb7e2e7be06d3a67957186aa5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
655d3a2245e2…0dba1f8b9775 coinbase1250