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

Block 19274

Hash
000000a0f99a27a964ba1acd3877725aec838cf839a607997e9de88e0501884c
Confirmations
21590
Time
2026-10-10 08:23:18 UTC
Median time
2026-10-10 08:14:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1df596bbe22241c346740afd916117f51bf9085b0087ff4911d8c60ebc6620bb
Previous block
00000039ffa7ebf6079d92e0d547a77344f4855ef4ec214f35fdc89560e5e1db
Next block
00000020af4a885af684fad42ca99bd2583d44cd79b762068bfea5d7ba1aac92

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 19274 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
6527ef05e5ea7fe2a56c095a90d4b018… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1df596bbe222…c60ebc6620bb coinbase1250