Pith Number

pith:FF7DK2YB

pith:2013:FF7DK2YBPEYK4BHGM6PWJS7MYV

not attested not anchored not stored refs pending

A Molecular Line Survey of the Carbon-Rich Proto-Planetary Nebula AFGL 2688 in the 3mm and 1.3mm Windows

Dinh-V-Trung, Jun-ichi Nakashima, Sun Kwok, Wayne Chau, Yong Zhang

arxiv:1306.3290 v1 · 2013-06-14 · astro-ph.SR · 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{FF7DK2YBPEYK4BHGM6PWJS7MYV}

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	2026-05-18T01:49:22.500774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

297e356b017930ae04e6679f64cbecc549e23608013fd08dd388907bff67f115

Aliases

arxiv: 1306.3290 · arxiv_version: 1306.3290v1 · doi: 10.48550/arxiv.1306.3290 · pith_short_12: FF7DK2YBPEYK · pith_short_16: FF7DK2YBPEYK4BHG · pith_short_8: FF7DK2YB

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/FF7DK2YBPEYK4BHGM6PWJS7MYV \
  | 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: 297e356b017930ae04e6679f64cbecc549e23608013fd08dd388907bff67f115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf25e0e7853d087b587f2e7ef0d7052950e54fe78b8998b0eec52d7cd606fcb8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-06-14T03:50:33Z",
    "title_canon_sha256": "fccbad8153c000ec59603c14663a0b484f5359833403e01c4ce72c81480819a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.3290",
    "kind": "arxiv",
    "version": 1
  }
}