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

Block 18749

Hash
000000ecddfb7246cad5e5e9dff268a22ea610793a75b886c3c5fa2e8d1aea5e
Confirmations
23454
Time
2026-10-09 17:38:44 UTC
Median time
2026-10-09 17:30:38 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2ecbf3159111491594d3e2e2ecd47b94bd6757f3e5b8ebea0685f43398fcec77
Previous block
00000079d2f8f8e5ca30b2c110cc9f99a2fd888dec04ff87374acc1d211f2b5b
Next block
000000dc66080cc982f71291f5acffd68a607c1e28a80f8ee24b1e5463f9aa76

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 18749 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
1230688c0895695b7376d7ee56fcd80f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2ecbf3159111…f43398fcec77 coinbase1250