Pith Number

pith:UPDB2KVW

pith:2014:UPDB2KVW2E35FOWD52PQW3FJQC

not attested not anchored not stored refs pending

High-resolution abundance analysis of very metal-poor r-I stars

B. Barbuy, C. Siqueira-Mello, E. Caffau, F. Spite, H. Schatz, M. Spite, P. Bonifacio, P. Fran\c{c}ois, R. Cayrel, S. Wanajo, T.C. Beers, V. Hill

arxiv:1404.0234 v1 · 2014-04-01 · 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{UPDB2KVW2E35FOWD52PQW3FJQC}

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	2026-05-18T01:43:43.423511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3c61d2ab6d137d2bac3ee9f0b6ca980a726ed3e0e409b7b0dc723bef0372f5d

Aliases

arxiv: 1404.0234 · arxiv_version: 1404.0234v1 · doi: 10.48550/arxiv.1404.0234 · pith_short_12: UPDB2KVW2E35 · pith_short_16: UPDB2KVW2E35FOWD · pith_short_8: UPDB2KVW

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/UPDB2KVW2E35FOWD52PQW3FJQC \
  | 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: a3c61d2ab6d137d2bac3ee9f0b6ca980a726ed3e0e409b7b0dc723bef0372f5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70dcbbf4cf36503b4413911b8bc877c7ad904c479af8a72f79f47905fc7ee0b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-04-01T13:30:55Z",
    "title_canon_sha256": "ff14a824ca9f466789768d3f63ce141149425bec01fc10d77c45150268b53106"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0234",
    "kind": "arxiv",
    "version": 1
  }
}