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

Block 18203

Hash
00000061cde994f2b562ddbbdd9ec3da3e107d5ca1419346fe9994cbbda7dffc
Confirmations
23531
Time
2026-10-09 02:30:58 UTC
Median time
2026-10-09 02:22:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5c91b6ea916e0a3f1647c38b4a2aadbd4c7532bd90da6a6bec09e0665bcaf52b
Previous block
00000045238e6daab4145a739efb50268cfb955bdd4b56dd7c838f3fd82bb8d9
Next block
0000005b7abd975e4e97f530f6490a7552030d69912beeccf742cb6b70412ec1

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 18203 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
a6ba33eb84e3ca9cc13cab7450181be1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5c91b6ea916e…e0665bcaf52b coinbase1250