Pith Number

pith:FZA7PDGY

pith:2012:FZA7PDGYAAN26XK2SSA35AZKEL

not attested not anchored not stored refs pending

A Robust Determination of the size of quasar accretion disks using gravitational microlensing

C. S. Kochanek, E. Mediavilla, J. A. Mu\~noz, J. Jimenez-Vicente

arxiv:1201.3187 v1 · 2012-01-16 · 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{FZA7PDGYAAN26XK2SSA35AZKEL}

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	2026-05-18T03:55:46.597408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e41f78cd8001baf5d5a9481be832a22f4b67394169d304d68e5213045db5971

Aliases

arxiv: 1201.3187 · arxiv_version: 1201.3187v1 · doi: 10.48550/arxiv.1201.3187 · pith_short_12: FZA7PDGYAAN2 · pith_short_16: FZA7PDGYAAN26XK2 · pith_short_8: FZA7PDGY

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/FZA7PDGYAAN26XK2SSA35AZKEL \
  | 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: 2e41f78cd8001baf5d5a9481be832a22f4b67394169d304d68e5213045db5971

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fda8e717979af0081c3606dad321204f12c24ad6405c9d6ad256c02aa464b1c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-16T09:33:03Z",
    "title_canon_sha256": "82741f499c15e3aa8cc30d537b38b7e098b7b686914cc570ea0208415bc1e9cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3187",
    "kind": "arxiv",
    "version": 1
  }
}