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

Block 18356

Hash
000000f55bc06eae39575c12f165b0e7d18b89ca77f4791b72d21507a5bf4372
Confirmations
23840
Time
2026-10-09 06:47:27 UTC
Median time
2026-10-09 06:39:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6a42bc59796350b35b1d47bded9583bf29ce0b5155002ddffe941a88ea92453f
Previous block
000000e1df202580f963bd3e305a80958a5b27c8439c3ee4e82b7c1e00ab1118
Next block
0000002e3e70d1483372a31ece7e94d4818f8d2d7a22c8c024315f5364cc114e

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 18356 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
e3dc4609e6f6a9f05bd323884f9c3640… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6a42bc597963…1a88ea92453f coinbase1250