Pith Number

pith:7T356LM5

pith:2015:7T356LM553ECF5XNJ7NZVRGQIC

not attested not anchored not stored refs pending

Time variations of narrow absorption lines in high resolution quasar spectra

(2) UC Santa Cruz, (3) LAM Marseille, (4) University of Chicago), C. P\'eroux (3), D.G. York (4) ((1) UPMC-CNRS Institut d'Astrophysique de Paris, J. Bergeron (1), J.X. Prochaska (2), P. Boiss\'e (1)

arxiv:1506.02959 v1 · 2015-06-09 · astro-ph.GA · 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{7T356LM553ECF5XNJ7NZVRGQIC}

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	2026-05-18T01:32:29.198754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcf7df2d9deec822f6ed4fdb9ac4d040bf6245d3efda1e972dd9ee484f59847a

Aliases

arxiv: 1506.02959 · arxiv_version: 1506.02959v1 · doi: 10.48550/arxiv.1506.02959 · pith_short_12: 7T356LM553EC · pith_short_16: 7T356LM553ECF5XN · pith_short_8: 7T356LM5

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/7T356LM553ECF5XNJ7NZVRGQIC \
  | 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: fcf7df2d9deec822f6ed4fdb9ac4d040bf6245d3efda1e972dd9ee484f59847a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8b874d3aac5674ee37103898144645fb0d82239f8d050fd1a550b1435130914",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-06-09T15:29:47Z",
    "title_canon_sha256": "6f2a0f11ab1e07c07d3f1342f68d56c7e12594377d6beeb83f7d79f4a452a2ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.02959",
    "kind": "arxiv",
    "version": 1
  }
}