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

Block 19507

Hash
00000088747fd4d2b9dbc87414d943bc50f3b94dea693fcfa43079e1d849a5f2
Confirmations
22642
Time
2026-10-10 14:54:52 UTC
Median time
2026-10-10 14:46:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
45397e470dbe7d9d55c52f91e4e03f7a7112d526b582d6b1120f2664ecd13ea8
Previous block
000000e209a4148d6d250863516b284929eb2c93827d887d4d8f2c6d9bcdf1ab
Next block
000000ccdf952879c737c024bf1862f7c910c573e315dc3e2eaf1b790adcf4aa

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 19507 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
f4d60c969ad0c395cf4fef5b23762905… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
45397e470dbe…2664ecd13ea8 coinbase1250