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

Block 19477

Hash
0000000e456ea99da516230518ab327de45fb11b81c9d1b2129cb8da38dc6823
Confirmations
22214
Time
2026-10-10 14:05:52 UTC
Median time
2026-10-10 13:57:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
816879c1d53f707cf095a72ab23d75df5033deba27e825dfad0ee5c52d336599
Previous block
00000050c6c670510982fc031fe0bb4b5e39751a57d4223b7d71c7337877889f
Next block
0000008c634a21a2d1b0861f6f3dc2c4c540c1f36c55b4af81860a239c8fe55e

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 19477 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
dc7a875dded534d62a82a11db4f2cad9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
816879c1d53f…e5c52d336599 coinbase1250