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

Block 19563

Hash
0000010328ab907ee90e012a5e44c53dd16f8eb30418701bda5c781bb4f5e7f1
Confirmations
21625
Time
2026-10-10 16:28:36 UTC
Median time
2026-10-10 16:20:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
edafa70720bdc790df58b56d8b231eac7f0eec492b1481159231e0a5834eaa71
Previous block
000000587ad0aa7b105a58550fa30056beb3d848a4fdef5f1e07345c9ab89600
Next block
00000044ad448b0fb8b9f6f076a5d227680f4cc842a5fb6774e82f84dead3c33

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 19563 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
ff1af55c996627fa9684ceada5ac34f1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
edafa70720bd…e0a5834eaa71 coinbase1250