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

Block 21444

Hash
000000dd331e2beaf64264f3ea1786c406509b6bd0db5340ef83209fc82d1a18
Confirmations
20171
Time
2026-10-12 20:45:22 UTC
Median time
2026-10-12 20:37:13 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ef35af75809b1fe28906b6ab9e71b104289242d490ea1ad1658ddabb2063891d
Previous block
000000f3e52d169c21c2221f6cdb8b9e3b62e5ddb4a915e2120928d095e6f39a
Next block
0000010e4f87f27dbe740794ad1fbfcd9a8c3a6288eef5bc2146df2f2bdac81c

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 21444 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
e483cf2f76f4ddc452f7a5afe88d6d23… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e86c33364d78…3306a46950bb coinbase1250.0000031
715f28bc3aa3…bcf273a8dde7 pays to P2MR1232.9999440.0000031