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

Block 18645

Hash
0000001258c805feace6b141405a04fe69be78d3d0eed55442d3dcabccc172e6
Confirmations
23147
Time
2026-10-09 14:47:18 UTC
Median time
2026-10-09 14:39:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
186dc074618b82e43595f45e45422f2ccb69f01352ca9a33372f8902d1d1addb
Previous block
000000caa743b0eb484671b10f8b0115f93a5f2d9632436d7fb72ba74f06c06b
Next block
0000008cd03f5ab73c173cebc07e533514e9210481e634a8805fb2c907b75085

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 18645 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
326f82a94bdfc15b3b443bed911ebe35… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
186dc074618b…8902d1d1addb coinbase1250