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

Block 19669

Hash
000000a061020618540345d7ed28d97785dddd69929bd17ef2c14052bd0da4df
Confirmations
22503
Time
2026-10-10 19:28:40 UTC
Median time
2026-10-10 19:20:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9c3c338442df020bca0e4fc636d9e28ca7ad9a3c5a5a1bb55e8938619988236c
Previous block
000000a14a4d9bf6b3816b4a0eba837a61bf1fbd07bb62c93c9c844ec6ff27ae
Next block
000000517a332606f662e8b5455e14ac752c38ea83f7ec84f4155b8d62d60c39

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 19669 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
6341503b04b4976690e436eb4d01db63… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9c3c338442df…38619988236c coinbase1250