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

Block 19101

Hash
000000df5842279db99eed620064df800599c1a644fd0f54e8286c060b44f370
Confirmations
21980
Time
2026-10-10 03:31:56 UTC
Median time
2026-10-10 03:23:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a8ad19cca096af3f4558a4488fef57933af1850f99990a1d696d54ab4631c966
Previous block
00000117e5ede0a5d59f1bb4e1a47da048853f3ab498aee37f5476f0ecd552cd
Next block
000000dc98bff998c2e6cbab9a6b409b33eb862bdbd75e4391e888cf06263f86

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 19101 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
d98799911f2b84353c5b4f0e77d1e522… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a8ad19cca096…54ab4631c966 coinbase1250