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

Block 18577

Hash
000000bc823672dcbbb57b89782bd825ef9d3ef603c93dfcbf098c65f6f87e50
Confirmations
22443
Time
2026-10-09 12:57:05 UTC
Median time
2026-10-09 12:49:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1cc4375123aac216726199bb114521bdba85457e796b173d432f5b0a7286252f
Previous block
00000074c4f5a7766d5b2015e11a50ce6b55dafc49c7aac13babcaf88c661641
Next block
00000095ab9fa0adf52541ec252f6854baec6992e711919b07c202c8883a3108

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 18577 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
184c06429c1e392aef76f7a289e4c3ad… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1cc4375123aa…5b0a7286252f coinbase1250