Pith Number

pith:7H4TO3DH

pith:2014:7H4TO3DHIFRSU6W6DFWHCZGSO6

not attested not anchored not stored refs pending

Chemical abundance analysis of the old, rich open cluster Trumpler 20

Giacomo Beccari (ESO), Giovanni Carraro (ESO), Henri Boffin (ESO), Javier Ahumada (Cordoba), Lorenzo Monaco (ESO), Sandro Villanova (Concepcion)

arxiv:1401.1563 v1 · 2014-01-08 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7H4TO3DHIFRSU6W6DFWHCZGSO6}

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	2026-05-18T01:45:33.015647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9f9376c6741632a7ade196c7164d2779900395c9856a14fe7756acd939daf16

Aliases

arxiv: 1401.1563 · arxiv_version: 1401.1563v1 · doi: 10.48550/arxiv.1401.1563 · pith_short_12: 7H4TO3DHIFRS · pith_short_16: 7H4TO3DHIFRSU6W6 · pith_short_8: 7H4TO3DH

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/7H4TO3DHIFRSU6W6DFWHCZGSO6 \
  | 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: f9f9376c6741632a7ade196c7164d2779900395c9856a14fe7756acd939daf16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ae044d8417174acd526017e62dc767d9171d2529e3f41837be55255bdd92871",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-01-08T02:13:52Z",
    "title_canon_sha256": "3e7e180ce51e93e717bf14e13c8098abdf441fe0290c4cab46b0f71d0f80505b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.1563",
    "kind": "arxiv",
    "version": 1
  }
}