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

Block 19442

Hash
000000a7bf6d056795c66efc527cbacde4b47fe2415020f62a438e3610bd6a7d
Confirmations
21604
Time
2026-10-10 13:07:02 UTC
Median time
2026-10-10 12:58:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1874eb4c7fa50e9d6a0a80d6be2045b5bbc77cf6c0619ddbd94f7d2479f92342
Previous block
00000047d587b5010d83d50fce6a8a85ef06f4927c6a2320515e9f816e066e99
Next block
0000008e8bf31e258caf66aabb77a826dd6014863bb36c164cbeb81f5440a37f

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 19442 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
e2ffcbd67673ddb76e18076507e7de1b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1874eb4c7fa5…7d2479f92342 coinbase1250