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

Block 19180

Hash
000000efeab47c1b62c28e296622d0988725223995f45ad7113b8f247a215933
Confirmations
23068
Time
2026-10-10 05:46:19 UTC
Median time
2026-10-10 05:37:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
67566c92228da28b0d503473277203c9536c32a3ea764837433e67667a2b9b6d
Previous block
000000e1053848da57dad4a3d5bc7b28c6a6744e817713b37dbdaa39a41eb610
Next block
00000003eb2c752f1c2736ef2fbd21fbe491185554cfbe290cc2dda4bc9d5357

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 19180 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
5c2921996e0bbf3d98a0943bfdad1c16… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
67566c92228d…67667a2b9b6d coinbase1250