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

Block 18116

Hash
00000040e2b6845c23b8b29bcccecd0863b7579709407b0279b038239475ef55
Confirmations
23533
Time
2026-10-09 00:03:16 UTC
Median time
2026-10-08 23:54:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
cd60cf8e03d3c3d3044d14f20dc40b8c8fd8abb7afbaa91b8c6f33abc25f3c48
Previous block
0000006530aad3519b8a5e03314fa1bbfe9904b6b8f9d49b10e60bdf674bdad7
Next block
000000af758e02721122579c5cb4f8d86be64f2c67029b8fcbc607cc8919e53d

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 18116 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
412a0121db192f92217dc7f665798ddb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cd60cf8e03d3…33abc25f3c48 coinbase1250