Pith Number

pith:6MQF52BA

pith:2013:6MQF52BAFJUCYTBUPSVQ2WJDT5

not attested not anchored not stored refs pending

A novel space division multiplexing system for free space optical communications

Dong Jian-ji, Huang De-xiu, Shi Lei, Zhang Xin-Liang, Zhou Hai-long

arxiv:1308.6405 v1 · 2013-08-29 · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6MQF52BAFJUCYTBUPSVQ2WJDT5}

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	2026-05-18T03:14:40.016523Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3205ee8202a682c4c347cab0d59239f67349f5d5604d4a127a4642da9916447

Aliases

arxiv: 1308.6405 · arxiv_version: 1308.6405v1 · doi: 10.48550/arxiv.1308.6405 · pith_short_12: 6MQF52BAFJUC · pith_short_16: 6MQF52BAFJUCYTBU · pith_short_8: 6MQF52BA

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/6MQF52BAFJUCYTBUPSVQ2WJDT5 \
  | 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: f3205ee8202a682c4c347cab0d59239f67349f5d5604d4a127a4642da9916447

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3433e656e65c020cefea606ac35b606187b1f218542a67da5b36d7f6db968277",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2013-08-29T08:52:40Z",
    "title_canon_sha256": "de0eb8f5ead97bf8f864e946b579a9c1a7f789b47d6602dc24d019c8d079f7de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.6405",
    "kind": "arxiv",
    "version": 1
  }
}