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

Block 18587

Hash
0000011b04ad74a73674a065e30d568f4c19be7b7ba419cd118735914e9544dd
Confirmations
22215
Time
2026-10-09 13:12:45 UTC
Median time
2026-10-09 13:05:01 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
65fb3ce6c3a45e2a1f9440cc95b7fabc41ab7d2b0dc41ed0a5014a1f041a4c67
Previous block
0000003f53fdc24e66dec31fcb7fe397d0c93733c1aebec3841d07ed5c5cb04b
Next block
000000211af57dbfb476d33d7ad941c77065ac9d1ff88b09b7b9d294da41f4ea

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 18587 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
b9efd814ce0f34da1f46185a890186ac… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bce8066f05a1…31dbf3dcce42 coinbase1250.0000031
5a56280d1571…449d1047d397 pays to P2MR124.99985720.0000031