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

Block 18702

Hash
000000a66cb3b23cdceec0dfa60351bf94da9b88c23df6424878154d4aca67d9
Confirmations
22646
Time
2026-10-09 16:21:25 UTC
Median time
2026-10-09 16:13:04 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ddcd712c2cc443be2fca9e208bc0705abc2c5f2e9f66c5302b171d07be69791d
Previous block
00000012a4b402ee580a5e1afcd0a16b90bfe3e2421fc686546fe0d51f8c5d4a
Next block
000001066854790d1ec55619d441cbb78319f6d0dfb823060cc65659454a68fa

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 18702 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
b45fca1d08bc0f1356df3f384e27f8f2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ddcd712c2cc4…1d07be69791d coinbase1250