Pith Number

pith:LTMWP6Z7

pith:2008:LTMWP6Z73UYOJFIQSSBXXFIOEN

not attested not anchored not stored refs pending

Observing the r-Process Signature in the Oldest Stars

Anna Frebel

arxiv:0812.1227 v1 · 2008-12-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LTMWP6Z73UYOJFIQSSBXXFIOEN}

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	2026-07-04T15:41:05.012056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cd967fb3fdd30e4951094837b950e2377942ebc643a49eee05b7c1e8781cad1

Aliases

arxiv: 0812.1227 · arxiv_version: 0812.1227v1 · doi: 10.48550/arxiv.0812.1227 · pith_short_12: LTMWP6Z73UYO · pith_short_16: LTMWP6Z73UYOJFIQ · pith_short_8: LTMWP6Z7

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/LTMWP6Z73UYOJFIQSSBXXFIOEN \
  | 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: 5cd967fb3fdd30e4951094837b950e2377942ebc643a49eee05b7c1e8781cad1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67a08e268e5f4e01fa08ebe7503c76a7a25d6158965aa8b079067e9cdaf5c82b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-08T17:41:26Z",
    "title_canon_sha256": "4c7799217841db65c45d61f8b1eda0bdbedbc330c2578551fdad66f91b9220e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1227",
    "kind": "arxiv",
    "version": 1
  }
}