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

Block 19206

Hash
000000fff63d2db0eb9f6764aef7c51e26e67f14fbe5abd6f85a7505a2c6c452
Confirmations
22106
Time
2026-10-10 06:30:21 UTC
Median time
2026-10-10 06:21:33 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1a7bfac927265f18db12838e69a2f7acca7f9a82614d373bd9922f54cbf4ad2b
Previous block
00000020aa1e4f6792bdcd8d2a3a75cb7c250b821c2e0dc3ed840a53d37621cc
Next block
0000007059855243d2795972347b21729885655f23d6fb533afb1d7de49cb3b9

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 19206 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
41829440a3b8aca5c2199b663db5d3ea… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1a7bfac92726…2f54cbf4ad2b coinbase1250