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

Block 19448

Hash
00000015c534fda73cb431db7131bd65d5a961ff16d767adbd6fee9b23e27e4c
Confirmations
21365
Time
2026-10-10 13:16:34 UTC
Median time
2026-10-10 13:08:41 UTC
Transactions
2
Size
6,706
Weight
15,325
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
82a8423668838936066c7f27d46c1c880595bbaed5d4426cd116b4564185d789
Previous block
0000002f8c255ebde43a2bf6ebe9276c9187a78b217d12baf5d67f6369c370f7
Next block
000000d636665fd03a2e57c885afba1e415a34ab4ca20f7005cf627a3a68e95a

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 19448 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
651c9705c7c3de564fb4cd2688754d2b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cae253eb0d81…a38b48fe6007 coinbase1250.00002174
098c49d7f27e…e7b462e2059e spends P2MR pays to P2MR120.999978260.00002174