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

Block 19619

Hash
0000005f62e20f4d5ae7047f21a7f5c2c3d3b2bbfa660c8cc39a84b1e84fae59
Confirmations
22749
Time
2026-10-10 18:03:13 UTC
Median time
2026-10-10 17:53:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
28bb810262af093d80df635bdd85e631b2158b34b999df48493d10dd81229707
Previous block
000000a6b40a74b7037d1c1a4a22247e031ee0a223b9d207535aef591bb4eb3e
Next block
000000dac7ce5a18351572481f1adaa7771d55c9bab7a83abc177ffcbfbc3c62

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 19619 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
8af2e55adc1826bfdfa2faaf9fb412f2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
28bb810262af…10dd81229707 coinbase1250