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

Block 18975

Hash
00000000f3dfdc6a775eab017923135d44c92cbfd95f10435a12d6ca3e2530db
Confirmations
22360
Time
2026-10-09 23:56:46 UTC
Median time
2026-10-09 23:47:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8959c9c197be7483d5dcf70835ca1169687ff014d06f7c0656ad5b27a7f9edd4
Previous block
000000f277a2d0db0af3a146296b4f76ed70e191d14d3630ae46efcab4fe3c93
Next block
000000bc02a336f07f5acb3c614d89287a45e6d6003cedce9744d955fca65b86

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 18975 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
89cdb10c82f31e9a94fdabbec4f18ec0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8959c9c197be…5b27a7f9edd4 coinbase1250