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

Block 19897

Hash
0000000aaa31118ae52889e0e9dbde43b169ceba51da157e28aed989d60a8d9b
Confirmations
22274
Time
2026-10-11 01:46:43 UTC
Median time
2026-10-11 01:38:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f84c81006e39215febfb1ab2bb32a728908209c32b3d6e1a8709d018128e4efe
Previous block
000000dd1b7224cc8e115a338e0131b7b7e1facc296e8aa31cefa23ab1429132
Next block
000000b7d59540df77ff0820ed90c85adaa737933c10aa6ddce13b64648676c4

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 19897 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
dceff45d9a98b5792a54167331fc14bf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f84c81006e39…d018128e4efe coinbase1250