Pith Number

pith:OIMAIJKN

pith:2018:OIMAIJKNCNQY35VUF6JIFTOAEO

not attested not anchored not stored refs pending

Quasars probing quasars X: The quasar pair spectral database

(2) University of California Santa Cruz, (3) Max-Planck-Institut f\"ur Astronomie, (4) Institute for Computational Cosmology at Durham University, 5), (5) Centre for Extragalactic Astronomy at Durham University, (6) Dartmouth College, 7), (7) UCO/Lick Observatory University of California Santa Cruz (8) San Diego State University, 9), (9) University of California Santa Barbara), Adam D. Myers (1), Ben Chehade (5), Joseph F. Hennawi (3, Joseph R. Findlay (1), J. Xavier Prochaska (2, Kate H. R. Rubin (8) ((1) University of Wyoming, Marie Wingyee Lau (7), Michael A. DiPompeo (6), Michele Fumagalli (4, Stephanie Bartle (5), Tom Shanks (5)

arxiv:1804.08624 v1 · 2018-04-23 · 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{OIMAIJKNCNQY35VUF6JIFTOAEO}

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	2026-05-18T00:13:26.072897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

721804254d13618df6b42f9282cdc0239d1d50cd512fc0be18567b21b0324451

Aliases

arxiv: 1804.08624 · arxiv_version: 1804.08624v1 · doi: 10.48550/arxiv.1804.08624 · pith_short_12: OIMAIJKNCNQY · pith_short_16: OIMAIJKNCNQY35VU · pith_short_8: OIMAIJKN

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/OIMAIJKNCNQY35VUF6JIFTOAEO \
  | 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: 721804254d13618df6b42f9282cdc0239d1d50cd512fc0be18567b21b0324451

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d278748364068599ab3463153ee932052376e334d2015d20309ef010e5ecd533",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-23T18:00:00Z",
    "title_canon_sha256": "362ea2ea41a6bdc9184644ed57fe0ada2a46c7dbd400485d66204240054ce4a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08624",
    "kind": "arxiv",
    "version": 1
  }
}