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

Block 19803

Hash
000000b0618f7e94de0a3e05befb7e60ccd4e1ff221a01007b2ba41e553cae44
Confirmations
21575
Time
2026-10-10 23:13:38 UTC
Median time
2026-10-10 23:05:28 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f3122f160c5c6b384be76013118ab8c56fbd017eb90b992a72cf63a59f47b89d
Previous block
00000049c90ba30a3cf8840cf63568dc33b5d4f3460806f1e45c87043631a52a
Next block
0000006a052983ffbcc27baee533c5e9246cd1d41cc7e62d9ec089c9448bec6a

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 19803 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
6cf12d222d5718aed9f6882afc5b27b6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f3122f160c5c…63a59f47b89d coinbase1250