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

Block 18869

Hash
000000aff1b119e4ae257ae0b6aa9d0d707476e0a845c91f33357a8ec490c3f9
Confirmations
23358
Time
2026-10-09 20:58:12 UTC
Median time
2026-10-09 20:50:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b5a75f18779cc4dadd36352645dc8e150c0b0bafb17b34dda5449cde411ad772
Previous block
0000002877f3ee9ef27e8777db754daccb70048fe1335e016c0e07c90f4e6e63
Next block
00000059bf9c04229e768462ce1d58de4f529254ddd36b51b3eab0051b4bc42e

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 18869 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
2fcfe69020cb19a2ba88eb0d34b03a0f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b5a75f18779c…9cde411ad772 coinbase1250