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

Block 19587

Hash
000000d1ccd5eb89ac1e1ddf97d1b2219eaf7d1d0efab50680bf321699d1066a
Confirmations
22562
Time
2026-10-10 17:09:08 UTC
Median time
2026-10-10 17:01:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5024ab44ce8e44d39be8d8fcee7d8e7ee996997dbc32028c1b3113338ce3d69f
Previous block
000000f23bddca330598ea167832053cf622a42d0112dfa2a81fb8ffd0a97675
Next block
00000048e083c2d98ae4783534c76d23b940bf4c7601779bdca589609727f936

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 19587 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
593b3fd5f9ad15fe8bd37b6d26f652b9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5024ab44ce8e…13338ce3d69f coinbase1250