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

Block 19300

Hash
000000bde554e20389c2fb4fa612ad1438ed6ad85c3633979f220e31346be895
Confirmations
21297
Time
2026-10-10 09:07:47 UTC
Median time
2026-10-10 08:58:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1340334643a05ddfedf55e74db45fdfb58215e9c94cbaf03c3e0a468fafa767e
Previous block
0000003a97db9911dfaf342189a917f9a12c40abe5fbe6bc8bbf36aaf67e73c9
Next block
00000076399ede3b515313b58e2a0a4eef671a4ff2821e57273155e9b93b9227

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 19300 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
c91740e9e250d4920ad3564196e444b4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1340334643a0…a468fafa767e coinbase1250