Pith Number

pith:UTGUEVSQ

pith:2009:UTGUEVSQG6ZTJTOJDG47KUFOAK

not attested not anchored not stored refs pending

Direct Observation of Cosmic Strings via their Strong Gravitational Lensing Effect: II. Results from the HST/ACS Image Archive

Eric Morganson, Phil Marshall, Roger D. Blandford, Tim Schrabback, Tommaso Treu

arxiv:0908.0602 v1 · 2009-08-05 · 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{UTGUEVSQG6ZTJTOJDG47KUFOAK}

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	2026-05-18T02:12:44.570861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4cd42565037b334cdc919b9f550ae02919753aeeda7c6e4b8d61b4ae3963465

Aliases

arxiv: 0908.0602 · arxiv_version: 0908.0602v1 · doi: 10.48550/arxiv.0908.0602 · pith_short_12: UTGUEVSQG6ZT · pith_short_16: UTGUEVSQG6ZTJTOJ · pith_short_8: UTGUEVSQ

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/UTGUEVSQG6ZTJTOJDG47KUFOAK \
  | 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: a4cd42565037b334cdc919b9f550ae02919753aeeda7c6e4b8d61b4ae3963465

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbff73b4346f33734e2dd451f2002056f504b9f010cfeacffc2ec25ba05bde1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-05T07:24:16Z",
    "title_canon_sha256": "dc46a1a7b028f54db391505a8dd8b101a9e97c4806572f9e29e4bbcf61f58a75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0602",
    "kind": "arxiv",
    "version": 1
  }
}