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

Block 21545

Hash
0000007c1ba1a9f567dcee72f901e72d842fae510c9f7b2742cc996c8052d4ce
Confirmations
19475
Time
2026-10-12 23:32:08 UTC
Median time
2026-10-12 23:24:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2621cb28687e2c1c0ffe18341c0367ccc024de2ff2322c10cd087ec25deae296
Previous block
000001152266cca382e7ac93fe933b3bccbd45aa825f8aa1b1f30e29c2914b2c
Next block
0000005c1f6943097a18bcd4d675e9dfde35f57fbec9bfbe1a7cbf87dc4129a9

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 21545 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
0f1d249d193b8f39a668eb66fd35b68f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2621cb28687e…7ec25deae296 coinbase1250