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

Block 19393

Hash
000000360c536665db25968fdaa809591938894b072cb0e1d1529e55abdeaa21
Confirmations
21672
Time
2026-10-10 11:44:54 UTC
Median time
2026-10-10 11:36:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8e9ca0dae78ab322f0ed2ba4035edbcb06bc524e1b51f66d09b9e49fdf62a307
Previous block
000000a653ff348ee0fcee6b81c501ea1518cc64e663f70f1770ee79f2b80a5c
Next block
00000013bcf2251e9f6d6af1f71aaee60c310bfd482db1ac67c022fd7c087bf3

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 19393 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
609f9b7e99901e966ca1c90797769acd… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8e9ca0dae78a…e49fdf62a307 coinbase1250