Pith Number

pith:Z3XT4LUO

pith:2021:Z3XT4LUOL2PHN6SHFL6SQ573SE

not attested not anchored not stored refs pending

Revealing the structure of the lensed quasar Q 0957+561: I. Accretion disk size

A. Hanslmeier, C. Fian, D. Chelouche, E. Mediavilla, J. A. Mu\~noz, J. Jim\'enez-Vicente, K. Rojas, P. Gom\'ez-Alvarez, V. Motta

arxiv:2108.05212 v1 · 2021-08-11 · 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{Z3XT4LUOL2PHN6SHFL6SQ573SE}

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.

Cited by

1 paper in Pith

Physically motivated AGN emissivity profiles and their effects on quasar microlensing signatures. 1. Multi-epoch accretion disc size inference

Receipt and verification

First computed	2026-07-05T03:21:58.271762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceef3e2e8e5e9e76fa472afd2877fb91098ba062cdab11e898f2abbd0216a5f5

Aliases

arxiv: 2108.05212 · arxiv_version: 2108.05212v1 · doi: 10.48550/arxiv.2108.05212 · pith_short_12: Z3XT4LUOL2PH · pith_short_16: Z3XT4LUOL2PHN6SH · pith_short_8: Z3XT4LUO

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/Z3XT4LUOL2PHN6SHFL6SQ573SE \
  | 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: ceef3e2e8e5e9e76fa472afd2877fb91098ba062cdab11e898f2abbd0216a5f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acc78f7969738f39f780971f9ae8c790c73aa10d3cf3fb5766796271bbe48cb5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-08-11T13:21:29Z",
    "title_canon_sha256": "15d8298b95fb5b73d8b16ced058cdfbba534de48627811e58a3124a97b1814bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.05212",
    "kind": "arxiv",
    "version": 1
  }
}