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

Block 19456

Hash
000000709c5057a925ee244a27b19c92b17b71e23eb7405092dcc5ffe7cb9ca5
Confirmations
21335
Time
2026-10-10 13:29:55 UTC
Median time
2026-10-10 13:21:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5e3ea889ea02fb644589ab83aed2823e0abd9c961b36ca002f51d6d55fa0278b
Previous block
000000c3d6a67677927167915068fcb31c5917d223913de5d7e48a5e801e8280
Next block
000000c367c3dd1ddfe23cea6427766f4cf89dc1c526a99912fce125a4b605cf

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 19456 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
24d26be02549d35da156f579ab53c028… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5e3ea889ea02…d6d55fa0278b coinbase1250