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

Block 18951

Hash
00000002862dd7115eeefc42c72ecb191256f6e69643b240ffcb1ad2191325dc
Confirmations
22346
Time
2026-10-09 23:15:48 UTC
Median time
2026-10-09 23:07:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e7332a741cda06f6d7992615ce36344d0b0a09b05488f3745a44d0b1cc2b66a2
Previous block
000001172ee789fc08d84a4f1601061a44f89885a62fccba2edc4e7cc462ccdd
Next block
000000c62a64eccbfced19ef1c3aea4c87a5835c26eb23a73e83c18bd1298fdb

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 18951 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
3b062afea3ea3c28746156bb2ba19921… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e7332a741cda…d0b1cc2b66a2 coinbase1250