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

Block 19586

Hash
000000f23bddca330598ea167832053cf622a42d0112dfa2a81fb8ffd0a97675
Confirmations
22523
Time
2026-10-10 17:07:32 UTC
Median time
2026-10-10 16:59:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
be100e3b5b865c56618ff3b3675cb83afc8adbcbea7267a77e097f0566785454
Previous block
000000fbf697c8d15ea1978dd5f2997310f009e51cb986f49369ddbd7f8c8f66
Next block
000000d1ccd5eb89ac1e1ddf97d1b2219eaf7d1d0efab50680bf321699d1066a

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 19586 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
a57338504c21d0ed7a938fe928942018… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
be100e3b5b86…7f0566785454 coinbase1250