Pith Number

pith:TKSHZ4BH

pith:2018:TKSHZ4BHYFQHJKS356N4F6WGPI

not attested not anchored not stored refs pending

Evidences of extragalactic origin and planet engulfment in the metal-poor twin pair HD 134439/HD 134440

Henrique Reggiani, Jorge Mel\'endez

arxiv:1802.07469 v1 · 2018-02-21 · 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{TKSHZ4BHYFQHJKS356N4F6WGPI}

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	2026-05-18T00:22:50.192600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aa47cf027c16074aa5bef9bc2fac67a23cf13b50360f09606ae6628afd87f73

Aliases

arxiv: 1802.07469 · arxiv_version: 1802.07469v1 · doi: 10.48550/arxiv.1802.07469 · pith_short_12: TKSHZ4BHYFQH · pith_short_16: TKSHZ4BHYFQHJKS3 · pith_short_8: TKSHZ4BH

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/TKSHZ4BHYFQHJKS356N4F6WGPI \
  | 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: 9aa47cf027c16074aa5bef9bc2fac67a23cf13b50360f09606ae6628afd87f73

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f932f81bc2e66657b49d6aac14398df7463bf94e54873d51c86ec420a2cec97",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-02-21T09:00:28Z",
    "title_canon_sha256": "79e3877beb5725397841f68fe367db8c0f026c5c358656f5a4699e0e0713334f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07469",
    "kind": "arxiv",
    "version": 1
  }
}