Pith Number

pith:XBB4RL4H

pith:2009:XBB4RL4H65IVAK7PAYJRSCG73A

not attested not anchored not stored refs pending

The Chemical Composition of Cernis 52 (BD+31 640)

A. Manchado, D. A. Garcia-Hernandez, D. L. Lambert, J. I. Gonzalez Hernandez, R. Rebolo, S. Iglesias-Groth

arxiv:0910.2310 v3 · 2009-10-13 · 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{XBB4RL4H65IVAK7PAYJRSCG73A}

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	2026-05-18T02:34:19.124168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b843c8af87f751502bef06131908dfd82c24748db05584ba90f2ccde3fd54874

Aliases

arxiv: 0910.2310 · arxiv_version: 0910.2310v3 · doi: 10.48550/arxiv.0910.2310 · pith_short_12: XBB4RL4H65IV · pith_short_16: XBB4RL4H65IVAK7P · pith_short_8: XBB4RL4H

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/XBB4RL4H65IVAK7PAYJRSCG73A \
  | 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: b843c8af87f751502bef06131908dfd82c24748db05584ba90f2ccde3fd54874

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d774c86557f9979fa56c7cc8d54f820e626042413fcde528f5cc539d262cb79",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-10-13T06:01:21Z",
    "title_canon_sha256": "faa82726a49d8f8e1c0b250b671338f0a45df6f98401a6c7d765ab43390f7f44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.2310",
    "kind": "arxiv",
    "version": 3
  }
}