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

Block 18260

Hash
0000002b45d663be0ae26726dd18587c490949d437ac1c59a1c42dd0b19b49a7
Confirmations
22440
Time
2026-10-09 04:06:21 UTC
Median time
2026-10-09 03:58:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b3f9e29b431de591987bd10025fd4347cd13c833253264492dc9d841b9ceaf82
Previous block
0000001ddfbcf30b92460ec1e5be2439d8d61eb8e4231104ce4fdfbb7e95d0ba
Next block
000000f7cd2f407e79698d26557014810205f9fc7c4ef11b605490d60c7c32bd

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 18260 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
7737f605819b4a18ce7c729c9221a472… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b3f9e29b431d…d841b9ceaf82 coinbase1250