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

Block 19859

Hash
000000ba54d83e228980eb74ad5496f8878e70c106b7c11d4897aba38a67887c
Confirmations
22335
Time
2026-10-11 00:44:55 UTC
Median time
2026-10-11 00:36:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a630957c8c2487162f01524c6cbb2365b2e22bae36e61f3bf52941bcc897970c
Previous block
000000dceea6b865c798885464d4df260e0f76b564499093fee01657c35a6422
Next block
000000c8aae0673e95d4c19038e3acb82ca42c6d911e4b273dcee65ae01ce0ef

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 19859 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
cb9aee7758daf95698408e792457f06d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a630957c8c24…41bcc897970c coinbase1250