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

Block 19566

Hash
000000b9c96374b322501eb7ef5e0089ccbd85e8207cbb1ba764f2f70922d568
Confirmations
21780
Time
2026-10-10 16:34:00 UTC
Median time
2026-10-10 16:25:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d54346d2310dcf4a400d41c59ea0e15a8d26a5f2cc35d18a912ef6f9506f6f3e
Previous block
000000b1f7c68b552c1d6f50da2fcdb8d69156b877e1803ee49bb49c72209da5
Next block
0000007d5ae5b42407b659c8d89a1fa0edca5785d65c804dcc067628068da195

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 19566 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
f9890242d3a402d618926400b59b3959… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d54346d2310d…f6f9506f6f3e coinbase1250