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

Block 18107

Hash
0000008728e4b16f07bbcfbdac02494c9454d95d69cdc83193b32345ceb06868
Confirmations
23417
Time
2026-10-08 23:48:15 UTC
Median time
2026-10-08 23:39:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
4413c6227e845a036515ae5059c99cfec50b131711dc7d89417b80eb7c2e194d
Previous block
000000b93761957b8f8842de578c404ec1c8c5880a1695bdf3abd06434b10d59
Next block
0000009bc200e6f3eb36fc4bdb3710eca7986ebe3db91f4d5ee8e01b1644ba17

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 18107 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
34aba54fc05ae0df624bdfffed30307c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4413c6227e84…80eb7c2e194d coinbase1250