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

Block 19516

Hash
00000054b6538ee0679541bf4a437cf2f1efd32e9ae89aa4b1393f533578d5ee
Confirmations
22611
Time
2026-10-10 15:10:05 UTC
Median time
2026-10-10 15:01:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
126317cf3d38e680c67507cafcc483e588374e23b54a000bf932bfb450b5eec6
Previous block
00000041f42a7b62893edc94e8f8ae8657a589a9f84be3e4e84a98999536862f
Next block
000000ea2eb060cde2a18b731052aecc9d8a350f47498042d8c01e7412b3b799

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 19516 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
98545da1fb294ec74262d836667d1a8b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
126317cf3d38…bfb450b5eec6 coinbase1250