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

Block 19685

Hash
000000cf79047b5c26f0c52b8ac09d0b4712fb2c0be66eba565d9e82f451f958
Confirmations
22432
Time
2026-10-10 19:55:36 UTC
Median time
2026-10-10 19:47:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e83682a5ac325924c4ed5681f0be0f4edb2b2e36c5dfaca7e94fe4d762356471
Previous block
0000009931de9dc6eba794e2d67dd7c5854b7482576557f1b206ab3a80e28dfd
Next block
00000045479f7744d76d02f1ffdde8d2e1788e6c34f2cfae7c0f19ed81c8701d

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 19685 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
61a91912d8b75ec4d817d8526b4bc13b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e83682a5ac32…e4d762356471 coinbase1250