Pith Number

pith:SBOOUV2T

pith:2003:SBOOUV2TYRP3K2EC2D4VNZ37M5

not attested not anchored not stored refs pending

Investigating lensing by absorbers in the 2dF-Quasar survey

Brice M\'enard, C\'eline P\'eroux

arxiv:astro-ph/0308041 v1 · 2003-08-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SBOOUV2TYRP3K2EC2D4VNZ37M5}

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	2026-07-04T14:12:49.689838Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

905cea5753c45fb56882d0f956e77f67481acd4d7899313d345414707c34858c

Aliases

arxiv: astro-ph/0308041 · arxiv_version: astro-ph/0308041v1 · doi: 10.48550/arxiv.astro-ph/0308041 · pith_short_12: SBOOUV2TYRP3 · pith_short_16: SBOOUV2TYRP3K2EC · pith_short_8: SBOOUV2T

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/SBOOUV2TYRP3K2EC2D4VNZ37M5 \
  | 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: 905cea5753c45fb56882d0f956e77f67481acd4d7899313d345414707c34858c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "989ba25ebc7a1bc802bf4e43a39b464cbd45c095867478a4996c214f0f3a85f6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-04T09:44:10Z",
    "title_canon_sha256": "2c80e53cd4a6ce67bee1d7884ea81f703da764f39863e6629fd21a19c549f7dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308041",
    "kind": "arxiv",
    "version": 1
  }
}