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

Block 19678

Hash
00000029215604d3386a8fe92dd723ad9afe9695867ef10887e63b4e29714673
Confirmations
22462
Time
2026-10-10 19:43:58 UTC
Median time
2026-10-10 19:35:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e1e01a82ebbd51455388fe39f668636b189ca3d2d559835a86b167603963cb71
Previous block
000000352389883491c3eabb8f50b6800082db09a30019785fe7e4ecfef306b5
Next block
000000a69722ff77d5d04e5c898ce47bc1ff8ced1fbe2c95142404b0d547d3f1

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 19678 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
dcee9e1571f139b9c8badfc7daf8aa3d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e1e01a82ebbd…67603963cb71 coinbase1250