Pith Number

pith:RL5BNQ7S

pith:2015:RL5BNQ7SJF7GD2DMNK5GMEJROJ

not attested not anchored not stored refs pending

Constraining the lifetime and opening angle of quasars using fluorescent Lyman $\alpha$ emission: the case of Q0420-388

Elena Borisova, Gabor Worseck, J. Xavier Prochaska, Olivera Rakic, Sebastiano Cantalupo, Simon J. Lilly

arxiv:1510.00029 v2 · 2015-09-30 · 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{RL5BNQ7SJF7GD2DMNK5GMEJROJ}

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	2026-05-18T01:01:29.038434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8afa16c3f2497e61e86c6aba661131726d17e5faa15f8cb8f29d92bb4617b5eb

Aliases

arxiv: 1510.00029 · arxiv_version: 1510.00029v2 · doi: 10.48550/arxiv.1510.00029 · pith_short_12: RL5BNQ7SJF7G · pith_short_16: RL5BNQ7SJF7GD2DM · pith_short_8: RL5BNQ7S

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/RL5BNQ7SJF7GD2DMNK5GMEJROJ \
  | 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: 8afa16c3f2497e61e86c6aba661131726d17e5faa15f8cb8f29d92bb4617b5eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "412102db89bee92c827713b1ed0a0cba16965ae678e86181059140d8aafce9d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-30T20:40:38Z",
    "title_canon_sha256": "5b31ebf577c9e6ee35aed87fbe0075953ece2958aa6861544256ec3b3c1a91c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00029",
    "kind": "arxiv",
    "version": 2
  }
}