Pith Number

pith:SI5MQRWN

pith:2012:SI5MQRWN2U6U7WVWQUNA6P5O7W

not attested not anchored not stored refs pending

Analytic formulas for frequency and size dependence of absorption and scattering efficiencies of astronomical polycyclic aromatic hydrocarbons

Ashim K. Roy, Pritesh Ranadive, Ranjan Gupta, Subodh K. Sharma

arxiv:1202.5142 v1 · 2012-02-23 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SI5MQRWN2U6U7WVWQUNA6P5O7W}

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	2026-05-18T04:01:38.860092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

923ac846cdd53d4fdab6851a0f3faefdbcbe5830995219ce243c688ca492c7c9

Aliases

arxiv: 1202.5142 · arxiv_version: 1202.5142v1 · doi: 10.48550/arxiv.1202.5142 · pith_short_12: SI5MQRWN2U6U · pith_short_16: SI5MQRWN2U6U7WVW · pith_short_8: SI5MQRWN

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/SI5MQRWN2U6U7WVWQUNA6P5O7W \
  | 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: 923ac846cdd53d4fdab6851a0f3faefdbcbe5830995219ce243c688ca492c7c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6b9ac856daeee9f29ce41ef173ed5277c312a8100c186776bc179d80cef1570",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-02-23T10:22:29Z",
    "title_canon_sha256": "7e3c84a4589d93cd3d9e29577b11db09eaf6d27d4d30eb5d75559fb88f07806c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5142",
    "kind": "arxiv",
    "version": 1
  }
}