Pith Number

pith:PRSXYM3H

pith:2009:PRSXYM3H2LVPD6H4OPPTDYGQMU

not attested not anchored not stored refs pending

Spitzer detection of PAH and silicate features in post-AGB stars and young Planetary Nebulae

(2) Harvard-Smithsonian Center for Astrophysics, (3) INAF-Catania Astropysical Observatory), C. Trigilio (3) ((1) Max-Planck-Institut f\"ur Radioastronomie, G. Umana (3), J. L. Hora (2), L. Cerrigone (1)

arxiv:0908.0638 v1 · 2009-08-05 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PRSXYM3H2LVPD6H4OPPTDYGQMU}

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	2026-05-18T02:12:44.500353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c657c3367d2eaf1f8fc73df31e0d065080f5d078f30d696e372e5e7cbb3f597

Aliases

arxiv: 0908.0638 · arxiv_version: 0908.0638v1 · doi: 10.48550/arxiv.0908.0638 · pith_short_12: PRSXYM3H2LVP · pith_short_16: PRSXYM3H2LVPD6H4 · pith_short_8: PRSXYM3H

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/PRSXYM3H2LVPD6H4OPPTDYGQMU \
  | 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: 7c657c3367d2eaf1f8fc73df31e0d065080f5d078f30d696e372e5e7cbb3f597

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c661dff3dd0d4f057fde4fba3511b74910d99c6d5795a1c9b378312ea7a00aac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-08-05T10:29:52Z",
    "title_canon_sha256": "c39a34b2b8808e7fca1a619175eeb0d6ba0b29047cdbfe271bf93bb315e9f8a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0638",
    "kind": "arxiv",
    "version": 1
  }
}