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

Block 19418

Hash
000000ca4e5d4db3e247d31c97f466186c68583b172ee56f1c8adecebe542664
Confirmations
21560
Time
2026-10-10 12:26:33 UTC
Median time
2026-10-10 12:17:45 UTC
Transactions
2
Size
3,046
Weight
11,665
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
413e0d5e06f0ac31d4d0d7751740219ccfa57c22522231b677553cd32565984c
Previous block
000000c8bca72607af329f1eed53fb5b8a29704c49ec91a108f8b58721997d5d
Next block
0000005ab6b606fbf219e616aaeeb563fc83f7825bca836c1394952b64373fd3

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 19418 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
9612a5709f2c849554a7c225ffc24e43… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
278fb206c81e…51738f9b2a9f coinbase1250.00000344
d197fc70c335…a1884e879023 spends P2MR pays to P2MR120.999996560.00000344