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

Block 19145

Hash
0000004aac94e630847b3d878c7cf9fa332e87df9f9f596b9ff73289e46dc49c
Confirmations
22688
Time
2026-10-10 04:47:43 UTC
Median time
2026-10-10 04:39:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
33e9a7652e0106d8bb3418de015116af94d881ca3737aa7eb7632d57e9053632
Previous block
000000a01712faf03d41f07c25d9d629ecd77282c2e7babc8e4363111dfed32b
Next block
000000dcf9575e928de724667ef45db51270bcbc3cde3b731842298ba4f8c78e

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 19145 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
f6a70688a861e3b9cc94ab1889aad3f7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
33e9a7652e01…2d57e9053632 coinbase1250