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

Block 18971

Hash
000000c281277114f99704986850ee590069db5e0d61e29a9713ba25e785c27e
Confirmations
22535
Time
2026-10-09 23:49:34 UTC
Median time
2026-10-09 23:41:31 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d03b42ba667887e05fadf28ad9c15d0c05905646dd30e9029dd26cf4cd44ca5d
Previous block
000000141b7a0e06ed1c5334ed756bd39c62c723179690a34b84214575f71afd
Next block
00000093e58e6cdc8ef58db4b78df048557344fe0f7df588947c39cdde172e32

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 18971 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
56d8ce7218daf825bfa9743b52ee213e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d03b42ba6678…6cf4cd44ca5d coinbase1250