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

Block 19173

Hash
000000f334030fc48b71f3a5072077687ca0dd5fad181d2edfcda4de12d1a909
Confirmations
22956
Time
2026-10-10 05:34:12 UTC
Median time
2026-10-10 05:25:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e795dc2d8fc75c088290832a913048f46e5271071367bf3957392e72b4201418
Previous block
0000010c375ac7e24cb992e904021753ee16a93b1af2bdc1215efcd5d4531fac
Next block
000000596c9d0531dec5a267f5af0af9c86b688675211e1cb3fc08da76969460

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 19173 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
a8e69036fdc9e5f747e76136d88c8cc7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e795dc2d8fc7…2e72b4201418 coinbase1250