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

Block 18077

Hash
0000005aa689dc75ed340c7b83a0a362cad1fa10bdfc9845ca2439f1939a77bc
Confirmations
24040
Time
2026-10-08 22:58:04 UTC
Median time
2026-10-08 22:49:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
76e0e64c0b1bb22302562d8373ecf084607716663b9f21dcd88bf45404df0f6d
Previous block
000000f643c18a898217a74bb497c6dcafe3eccedf38a59cddb704f68afe57fc
Next block
0000007182f8c85cfff8250b9d69c74b4e4c34e43ab528ee551be9b2a56c667e

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 18077 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
9ec47f8f6b288d0093cc94e303cdd2f8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
76e0e64c0b1b…f45404df0f6d coinbase1250