Pith Number

pith:TTWK2EQC

pith:2017:TTWK2EQCOEA74I5NTG67UKVOJR

not attested not anchored not stored refs pending

Preparation-Attack-Immune Quantum Secure Direct Communication Using Two-Fold Photon Degree of Freedom

B. S. Ham, Jeongho Bang, Jihong Min

arxiv:1704.01261 v1 · 2017-04-05 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TTWK2EQCOEA74I5NTG67UKVOJR}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:46:58.627477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cecad12027101fe23ad99bdfa2aae4c5689cc60c44eb80ef0da1cb5a9e6401d

Aliases

arxiv: 1704.01261 · arxiv_version: 1704.01261v1 · doi: 10.48550/arxiv.1704.01261 · pith_short_12: TTWK2EQCOEA7 · pith_short_16: TTWK2EQCOEA74I5N · pith_short_8: TTWK2EQC

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TTWK2EQCOEA74I5NTG67UKVOJR \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 9cecad12027101fe23ad99bdfa2aae4c5689cc60c44eb80ef0da1cb5a9e6401d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68e90f22a91b1ab96d646f4bbcf50b9a765956964565db01170c6c25cb4a518a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-04-05T03:56:29Z",
    "title_canon_sha256": "fa8b3697bf3165a41733fe130a6e10a329f1cb68f7268870807a1a24df92e83a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01261",
    "kind": "arxiv",
    "version": 1
  }
}