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

Block 19994

Hash
0000000a830703cd9c9318374810355ab3037e81aef51756975ccef0387d87c6
Confirmations
20890
Time
2026-10-11 04:30:22 UTC
Median time
2026-10-11 04:22:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
01485787f3e2106965a5ee216a8ddcd4532ac106d6c25f548bfb2abe56c5f74b
Previous block
000000d2be845c91bf88ca450f92be7a2a471fe6f53a1669b85303d63ec9fff1
Next block
000001157171753354ed2543c9ac5a67efa95b1deb06964fdec7e7084e374cec

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 19994 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
1a0930cd5a4e39f87243b42942927177… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
01485787f3e2…2abe56c5f74b coinbase1250