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

Block 19119

Hash
0000001b5efcefccdf90bbaaaf531152ce171781fbe96e999b64de42bf46e801
Confirmations
21566
Time
2026-10-10 04:05:37 UTC
Median time
2026-10-10 03:57:33 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7035b43a0a89e4a74944648d816639da81546410b79101b30d289ed0390087d8
Previous block
000000717e9ac1ee7c9e074bb6ba149ef737aa5f4a3d93912a6b97dafeb99c3b
Next block
000000e86ab32865e3cb2c17d4018b86f218733026eef49e35343ad2f1490d7b

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 19119 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
ae6395a1a7cc2982e3f40b7f6855d842… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
abbb203a2702…912d2f768fca coinbase1250.0000031
e7787a99e98f…da31a64896eb pays to P2MR1223.99991610.0000031