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

Block 18634

Hash
00000082c622590cfc8288e6cbe42bb842144580b09e29fbd72756c9d0eedee7
Confirmations
22605
Time
2026-10-09 14:29:38 UTC
Median time
2026-10-09 14:21:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d8ffeaf8fe22980a7eec7f9c12bc438ab98cb4da2524e0925e31a91fda17d90d
Previous block
0000004150e308b63223484454aa3fe616d3567f0f9fc92c4aaafea422552b55
Next block
00000102886d39a55c2514458c85bd4380910830a81ff609e4b12ecbbadbe25e

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 18634 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
1f2d79c884f094039c35c46e90933c8d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d8ffeaf8fe22…a91fda17d90d coinbase1250