Pith Number

pith:UQAPZ6OE

pith:2013:UQAPZ6OEZGDUA4H4RW45VV23SR

not attested not anchored not stored refs pending

A Census of Quasar-Intrinsic Absorption in the Hubble Space Telescope Archive: Systems from High Resolution Echelle Spectra

Benjamin D. Lackey, Christopher Palma, Jane C. Charlton, Joseph R. Masiero, Kenneth R. Sembach, Michael Eracleous, Nikola Milutinovic, Rajib Ganguly, Ryan S. Lynch, Therese M. Jones, Todd M. Tripp, Toru Misawa

arxiv:1307.6799 v1 · 2013-07-25 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UQAPZ6OEZGDUA4H4RW45VV23SR}

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	2026-05-18T01:48:34.579898Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a400fcf9c4c9874070fc8db9dad75b946c7be450562ca885b8d854879d3e291c

Aliases

arxiv: 1307.6799 · arxiv_version: 1307.6799v1 · doi: 10.48550/arxiv.1307.6799 · pith_short_12: UQAPZ6OEZGDU · pith_short_16: UQAPZ6OEZGDUA4H4 · pith_short_8: UQAPZ6OE

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/UQAPZ6OEZGDUA4H4RW45VV23SR \
  | 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: a400fcf9c4c9874070fc8db9dad75b946c7be450562ca885b8d854879d3e291c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc77cb738feb5d0bede53b11b51a72491875f887168f862ea64adbcd2270f182",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-25T15:45:45Z",
    "title_canon_sha256": "ba0e81e3cbe555e3949ba78a2a5e427d4fad826d1e5c317cbd7fa19826c98630"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6799",
    "kind": "arxiv",
    "version": 1
  }
}