Pith Number

pith:G5XHQ74C

pith:2009:G5XHQ74C7UVQCM5BCDE23KWTXU

not attested not anchored not stored refs pending

A Definitive Survey for Lyman Limit Systems at z~3.5 with the Sloan Digital Sky Survey

Gabor Worseck (1) ((1) UCO/Lick Observatory at UC Santa Cruz; (2) St. Michael's College), John M. O'Meara (2), J. Xavier Prochaska (1)

arxiv:0912.0292 v1 · 2009-12-01 · 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{G5XHQ74C7UVQCM5BCDE23KWTXU}

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	2026-05-18T02:34:02.720340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

376e787f82fd2b0133a110c9adaad3bd3856850f04a8642678cc92f3ed1f19bf

Aliases

arxiv: 0912.0292 · arxiv_version: 0912.0292v1 · doi: 10.48550/arxiv.0912.0292 · pith_short_12: G5XHQ74C7UVQ · pith_short_16: G5XHQ74C7UVQCM5B · pith_short_8: G5XHQ74C

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/G5XHQ74C7UVQCM5BCDE23KWTXU \
  | 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: 376e787f82fd2b0133a110c9adaad3bd3856850f04a8642678cc92f3ed1f19bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f36df1dcd8d2c85ffab1f34655ae45418560a393e90c89ea449ff43ba33ec77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-01T22:54:30Z",
    "title_canon_sha256": "96e35675efb75cd8a18c787d10b7f9e067366820cbe211a5e38a7a42dd054ff1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0292",
    "kind": "arxiv",
    "version": 1
  }
}