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

Block 19443

Hash
0000008e8bf31e258caf66aabb77a826dd6014863bb36c164cbeb81f5440a37f
Confirmations
21494
Time
2026-10-10 13:08:41 UTC
Median time
2026-10-10 13:00:31 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
187493be20813d6a5bf28dcef0adae6f9eeb91486198676c79e1f818dbbd109d
Previous block
000000a7bf6d056795c66efc527cbacde4b47fe2415020f62a438e3610bd6a7d
Next block
000000d6f4f82f80fb3520aa695ebf1a148bc57da0018638e420cd28d75ae5a0

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 19443 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
eb4368cf8624c4a6537fca06f7097a69… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
187493be2081…f818dbbd109d coinbase1250