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

Block 19377

Hash
0000011be13260908951004d02329ff067c89b797ab6f67e08cb2975b57dcbe5
Confirmations
21988
Time
2026-10-10 11:17:14 UTC
Median time
2026-10-10 11:08:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7fab286ff801361b1849f5b7855177939df99b52cfa82f76ca74023937c6c868
Previous block
000000d86f5e99b11d0ad1e765de68fc4ca40efdf30fdeae235e4851bfb24608
Next block
0000008ccdb2d179a615df272daacb9eb3f4084897e0d258b74b77868cdc88da

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 19377 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
9f45993c7c141432232c152975421c0b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7fab286ff801…023937c6c868 coinbase1250