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

Block 19501

Hash
00000025a5739cb1edaf3efefb300be446c1d9c7c564f18cebeb5c060d60df58
Confirmations
22633
Time
2026-10-10 14:45:05 UTC
Median time
2026-10-10 14:36:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
83aa7267a8ba581d0cb91cd9e6703474aac672a2ef51f6eee753d5a48c091669
Previous block
000000309c3bcac034919c6c6d281da32233939e35ad57ffa739e7f414e25517
Next block
000000714d73b1c0d2dd9a1c373e056b6e075afa26f7bbc4cb7745b1f13b980d

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 19501 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
ec7e7dded9776476c5403e05bf45f19b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
83aa7267a8ba…d5a48c091669 coinbase1250