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

Block 21183

Hash
0000009c84b0311df70ec33dd178bb60a003cdaaa03a06ba172f857988b49530
Confirmations
19615
Time
2026-10-12 13:24:50 UTC
Median time
2026-10-12 13:16:47 UTC
Transactions
2
Size
10,499
Weight
19,112
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
281472c3148bc5e3f58be222a07eaa8f1a72b7341c5618efee8a7b8df42cbc6b
Previous block
000000f30dc3f3fccfb2c60298a329707d745114ef836f2ad39bdbbdbb0bb4ec
Next block
00000058def2f4cca11b3c7e348c35745f5b81000fcc97be9df5235a0ee4f2ca

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 21183 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
85326a85085b968041b5b53c16d3f7a5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4f0ead4bc6d7…61453823383d coinbase1250.00004066
8872067ee26b…55da0198853b spends P2MR pays to P2MR2123.999464840.00004066