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

Block 19004

Hash
000000a078c5ecccdd7cec85e6a9f567bb5cff442e5c32e09a0df6481bd393ba
Confirmations
21433
Time
2026-10-10 00:46:04 UTC
Median time
2026-10-10 00:37:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7c67e65a94bcbbdb42c02b33563baf34307b56395c6caec8eba498f11fceb1fd
Previous block
000000cdc314c422adb7a76c2bed2ec995e2581999e3f4d54c51e3abed8ae4be
Next block
000000debf5b5d4307914bf7c7e4862561f1546e358be9261feda4b4950e0c2a

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 19004 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
55044055f009120bc5d0702dca3a51c5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7c67e65a94bc…98f11fceb1fd coinbase1250