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

Block 18647

Hash
00000027fb8b679e303bbb9ec26bc4f818579bf95fde25d7e9ecaa48d71beb74
Confirmations
23269
Time
2026-10-09 14:50:44 UTC
Median time
2026-10-09 14:42:25 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
180a3241352def3084d87d27308f0497378b0c353f0a221ae14510c01d83cca3
Previous block
0000008cd03f5ab73c173cebc07e533514e9210481e634a8805fb2c907b75085
Next block
000000df7d197d36dd0a74e10ece875deaf481b4cdcdfc7c7464f02fed8d7f3e

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 18647 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
e24e91f1312f94b44a74e7d98a87f6ec… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
180a3241352d…10c01d83cca3 coinbase1250