Pith Number

pith:SCUP6NRO

pith:2012:SCUP6NROPPBSALJRS53XIKJBRX

not attested not anchored not stored refs pending

Measurement of The Broad Line Region Size in a Luminous MACHO Quasar

Doron Chelouche, Eliran Daniel, Shai Kaspi

arxiv:1204.1862 v1 · 2012-04-09 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SCUP6NROPPBSALJRS53XIKJBRX}

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	2026-05-18T01:57:55.762813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90a8ff362e7bc3202d3197777429218dfb96323ba42910e87871ffef9cd49c36

Aliases

arxiv: 1204.1862 · arxiv_version: 1204.1862v1 · doi: 10.48550/arxiv.1204.1862 · pith_short_12: SCUP6NROPPBS · pith_short_16: SCUP6NROPPBSALJR · pith_short_8: SCUP6NRO

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/SCUP6NROPPBSALJRS53XIKJBRX \
  | 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: 90a8ff362e7bc3202d3197777429218dfb96323ba42910e87871ffef9cd49c36

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50bd70f745bfa0493b820e5743cebf4784d8baf36ed73461bfd76ef1e9be7320",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-09T11:55:56Z",
    "title_canon_sha256": "161b611e213aa236ec67903e03daa124aed26cdfb6a0981e1070ea59c8d41e8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1862",
    "kind": "arxiv",
    "version": 1
  }
}