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

Block 19998

Hash
000000f4b43c589d46a57a13d5c05d63328b3c2371db9e6599ab5a11c82b79fc
Confirmations
21166
Time
2026-10-11 04:37:28 UTC
Median time
2026-10-11 04:28:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
89466490985ad02fae99888bcdc89e9819dd00f47a0cd7aa5f4a2cf465b4761e
Previous block
00000119613f340bf66e1c084e93a6ffd5038a2dd3524e49c6a1507198972ca9
Next block
000000841874616836f0908d4e6bb2ef8cd55ea0b9323e7084f857d69b2abdb1

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 19998 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
69f665d717b4672cf529315df5c3d42f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
89466490985a…2cf465b4761e coinbase1250