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

Block 18601

Hash
0000010360bd44b9ae08c9b7c942eb0bbab4b315631a6449c2587305b38d35db
Confirmations
22241
Time
2026-10-09 13:35:09 UTC
Median time
2026-10-09 13:27:03 UTC
Transactions
2
Size
10,499
Weight
19,112
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
60af647ed8461231bba41ec41878b50b5dc8196146fd889ba2770063ba1ead5b
Previous block
0000006e5d5aeb85b3e0bc9a29e22e04c09ffb6b63abf44edd7a54b05193e0e0
Next block
000000782d43a3b7eb3e66e1fbc969ef915826b25d62d73f53ec244682f17c05

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 18601 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
06f72bc0d95eb07a4d6739a17a656352… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
31f20cf2b369…d69321585235 coinbase1250.00004066
bc5d6902b9ad…db09c1749511 spends P2MR pays to P2MR2117.9995990.00004066