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

Block 21698

Hash
000000c096df4eba8d8f8a887d5953c5affcf6074c6177ac71a7a61c56a8f386
Confirmations
19615
Time
2026-10-13 03:51:03 UTC
Median time
2026-10-13 03:42:15 UTC
Transactions
1
Size
2,771
Weight
10,976
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
610a6753191dec8f02a16b423589d204a245f4f3d8bb733ad3eb629426a6d9a6
Previous block
00000035408edd07336edcb3b06fa118da09295fe1d421f8c6426914512c0058
Next block
00000099beb61fe251dddf6eabae9d96202d3149dddb7fb6fa2451187840fe13

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 21698 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
51d73e19abead77b917cbf5395178f20… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
610a6753191d…629426a6d9a6 coinbase1250