Pith Number

pith:7F6XHVLN

pith:2011:7F6XHVLNHEPNEZFBW472B6XGET

not attested not anchored not stored refs pending

Simulation of a strategy for the pixel lensing of M87 using the Hubble Space Telescope

Sedighe Sajadian, Sohrab Rahvar

arxiv:1108.4187 v2 · 2011-08-21 · 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{7F6XHVLNHEPNEZFBW472B6XGET}

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	2026-05-18T02:00:50.078472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f97d73d56d391ed264a1b73fa0fae624d5567ce39f2ba1d50234e2824ab4367a

Aliases

arxiv: 1108.4187 · arxiv_version: 1108.4187v2 · doi: 10.48550/arxiv.1108.4187 · pith_short_12: 7F6XHVLNHEPN · pith_short_16: 7F6XHVLNHEPNEZFB · pith_short_8: 7F6XHVLN

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/7F6XHVLNHEPNEZFBW472B6XGET \
  | 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: f97d73d56d391ed264a1b73fa0fae624d5567ce39f2ba1d50234e2824ab4367a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b7ae686ad6545c42c5797bdef618fc85dfd693bfa8b84e3c1845752e780c940",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-08-21T16:11:34Z",
    "title_canon_sha256": "90ef9f01dc48b8f9c8a1edcf0ffbe19f5ad8655ab64e0641f2bd6cf9363a6588"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4187",
    "kind": "arxiv",
    "version": 2
  }
}