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

Block 19505

Hash
0000009e50cf2bd3b612dd0aff555c5848ae6db69bb5f6a35f6d15f750ee94f0
Confirmations
22640
Time
2026-10-10 14:51:35 UTC
Median time
2026-10-10 14:43:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c40799c25e80462286547dcfa5ecbb249a2e55c3a4438a53bdcfe8be53d09c14
Previous block
000000c8d7933e4a64da2101c82c997cc7151963cadc2b8e1049d0457d7ce3b8
Next block
000000e209a4148d6d250863516b284929eb2c93827d887d4d8f2c6d9bcdf1ab

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 19505 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
953a5f2315ef604c7d35a811220431b3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c40799c25e80…e8be53d09c14 coinbase1250