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

Block 19104

Hash
0000002b437c9861aa935242ca5560f7eb001b924793c1820fec4ad9f8d58ba0
Confirmations
21749
Time
2026-10-10 03:37:02 UTC
Median time
2026-10-10 03:28:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5c90c0041b2184f55ef06ec5fc7939e4fc9bb00b98d44362b98eff0245a2441b
Previous block
000000cc0972de144fa4520fd9dfb58f8f04aa069fd11bfee00cc2745bae4759
Next block
00000101ee16b030d117fd7b46efed36d8bdd54ce971e6880b72ca7f03df0360

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 19104 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
f7f3fb4b7c6de5b8602f57156e99d1a2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5c90c0041b21…ff0245a2441b coinbase1250