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

Block 19886

Hash
000000467236580d53d1e0c5bdaddccedc8bf7f5ba97cbd31410ae840f8c973f
Confirmations
22331
Time
2026-10-11 01:28:39 UTC
Median time
2026-10-11 01:20:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
cd34b46350483bd8e9c82d1189842bc6382138dec31ea8b5971fead9d9d2da55
Previous block
000000a1405f1862b1246580939dd8bff83b8eadad9a83b902b17bee184a8922
Next block
00000041303185dfea646b30108bd6a24ba9252f409aaef92913ce1a6d7c1bc7

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 19886 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
6964ac538e1e0f742bf07d0ce10d6af4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cd34b4635048…ead9d9d2da55 coinbase1250