PQC Block Chain
Immutable, quantum-safe record of every action on QuantaMrkt. Every block is signed with ML-DSA-87.
Total Blocks
251
Total Entries
2170
Signature Algorithm
ML-DSA-87
Latest Block
2026-07-23 17:25 UTC
Recent Blocks
All Blocks
| Block | Timestamp | Entries | Block Hash | Merkle Root | Prev Hash | Sig. Algo |
|---|---|---|---|---|---|---|
| #250 | 2026-07-23 17:25 UTC | 5 (2163-2167) | 90e98b5f01...c814 | 49963c478a...8b70 | c0e3cdbf...d455 | ML-DSA-87 |
| #249 | 2026-07-23 13:30 UTC | 5 (2158-2162) | c0e3cdbf3a...d455 | c1a5950a04...dafc | 294a6516...015d | ML-DSA-87 |
| #248 | 2026-07-23 10:23 UTC | 6 (2152-2157) | 294a6516b7...015d | e10823b66b...ec35 | ec5917ab...ed15 | ML-DSA-87 |
| #247 | 2026-07-23 08:25 UTC | 5 (2147-2151) | ec5917abad...ed15 | 8302c0a14c...c9b3 | 6f56bba7...addd | ML-DSA-87 |
| #246 | 2026-07-23 04:25 UTC | 5 (2142-2146) | 6f56bba796...addd | 8d5be42dbe...d049 | d9ea3d9e...8135 | ML-DSA-87 |
| #245 | 2026-07-22 23:23 UTC | 5 (2137-2141) | d9ea3d9e0b...8135 | b3ae68bb94...2800 | 39df1fcd...ac0b | ML-DSA-87 |
| #244 | 2026-07-22 18:23 UTC | 5 (2132-2136) | 39df1fcd8f...ac0b | 554a558071...27d9 | 3a662bcb...33b3 | ML-DSA-87 |
| #243 | 2026-07-22 13:28 UTC | 2 (2130-2131) | 3a662bcb3d...33b3 | 6f2cd3521d...94be | 2d176aba...42f1 | ML-DSA-87 |
| #242 | 2026-07-22 12:23 UTC | 5 (2125-2129) | 2d176abad6...42f1 | e79d2c0120...f521 | 686730fb...cc98 | ML-DSA-87 |
| #241 | 2026-07-22 08:23 UTC | 6 (2119-2124) | 686730fb01...cc98 | 52fdab5bf2...8bad | 0de4b09a...98d9 | ML-DSA-87 |
| #240 | 2026-07-22 03:23 UTC | 5 (2114-2118) | 0de4b09a2c...98d9 | 1d49231030...c492 | 84c5456f...130c | ML-DSA-87 |
| #239 | 2026-07-21 22:25 UTC | 5 (2109-2113) | 84c5456f0d...130c | 3a32aa0859...df0d | 085a750a...d063 | ML-DSA-87 |
| #238 | 2026-07-21 17:23 UTC | 5 (2104-2108) | 085a750a6f...d063 | b98a29c96c...5721 | aa2b7d21...3d42 | ML-DSA-87 |
| #237 | 2026-07-21 12:26 UTC | 5 (2099-2103) | aa2b7d2134...3d42 | 593c854e64...48f1 | 517f2b40...2f73 | ML-DSA-87 |
| #236 | 2026-07-21 07:31 UTC | 5 (2094-2098) | 517f2b4061...2f73 | 5f4072b8c3...bc12 | df291d10...bbb7 | ML-DSA-87 |
| #235 | 2026-07-21 02:25 UTC | 5 (2089-2093) | df291d101d...bbb7 | 2637a76de3...9b68 | 1e6f9872...232e | ML-DSA-87 |
| #234 | 2026-07-20 21:23 UTC | 5 (2084-2088) | 1e6f9872fa...232e | aa5735d188...dfbe | d0c513d5...7210 | ML-DSA-87 |
| #233 | 2026-07-20 16:23 UTC | 5 (2079-2083) | d0c513d5f9...7210 | ee73b4feeb...ee8d | 67751f43...adbd | ML-DSA-87 |
| #232 | 2026-07-19 09:23 UTC | 7 (2072-2078) | 67751f43eb...adbd | 03a03239fa...bb06 | 6c838fe1...4e3f | ML-DSA-87 |
| #231 | 2026-07-19 04:23 UTC | 5 (2067-2071) | 6c838fe129...4e3f | 9d788d457f...f216 | e0757460...1189 | ML-DSA-87 |
Block #
Cryptographic Details
Technical specification of the QuantaMrkt PQC block chain
Block Hash
SHA-256 of block_number | previous_hash | merkle_root | timestamp
Ensures each block's content is tamper-evident and deterministically verifiable.
Merkle Root
Binary Merkle tree of SHA-256 entry hashes. Odd nodes are paired with themselves.
Allows efficient proof of inclusion for any transparency log entry.
Signature
ML-DSA-87 (FIPS 204) -- NIST-standardized post-quantum digital signature.
Resistant to both classical and quantum attacks. Transitional blocks may use Ed25519 where noted.
Chain Property
Each block's previous_block_hash = prior block's block_hash
Creates an immutable, ordered sequence. Tampering with any block breaks all subsequent hashes.
How the PQC Block Chain Works
1. Entry Creation
Every model submission, agent registration, and verification is logged to the transparency log with a SHA-256 chain hash.
2. Block Creation
Pending entries are grouped into blocks. A Merkle tree root is computed from all entry hashes in the block.
3. ML-DSA Signing
Each block hash is signed with ML-DSA-87, a NIST-standardized post-quantum digital signature algorithm.
4. Public Verification
Anyone can verify the chain integrity by re-computing hashes and Merkle roots. Use the API for programmatic verification.
Programmatic Verification
curl https://quantamrkt.com/api/chain/verify
# {"valid": true, "blocks_checked": 4, "latest_block": {"block_number": 3, ...}}
curl https://quantamrkt.com/api/chain/blocks
# {"blocks": [...], "total": 4}
curl https://quantamrkt.com/api/chain/blocks/1
# {"block": {...}, "entries": [...]}