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

Block 19767

Hash
00000034fb0f3d47262c8a171e8191aa53ba335a0deb583035bc2fa26e3fd6e7
Confirmations
20770
Time
2026-10-10 22:12:49 UTC
Median time
2026-10-10 22:04:54 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
345a99e4dc804c3aac492ae210a289dd96ad455b58803fe6c00ac640bb532f27
Previous block
000000396c2b3a0706a1c577044282db2682630299abe0b24fb66c926e59ed1a
Next block
0000006fdcbdd223a071eb6e1d5eda73002c25b9bc976ec2fa705578c61595dd

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 19767 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
b5266d5d6db52b44d65fa386bc91ad78… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
345a99e4dc80…c640bb532f27 coinbase1250