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

Block 19463

Hash
000000fecc8ab0297ea4ddcd86f23da0c0275f0a216af3314485fc43ed37709c
Confirmations
21602
Time
2026-10-10 13:41:40 UTC
Median time
2026-10-10 13:33:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ca63832e68ef841b9d62d8aa73cd861231317b1c6b7d4bc6909d0febeffd1613
Previous block
000000770d04abcfd88d5aa622c86fbbef14fcb3f32cda3203f8c4b63612e057
Next block
000000305f5980cab791c543975d190b9bd3c19ef912304dfa4f5ab49e6d743a

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 19463 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
a1c876548a988951c3a2a6af9e32523d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ca63832e68ef…0febeffd1613 coinbase1250