Pith Number

pith:GOYJC6ZM

pith:1997:GOYJC6ZMVGRXP6Q2J3N5N6QR4Z

not attested not anchored not stored refs pending

The Extinction Law in an Occulting Galaxy

A. C. Quillen, Andreas A. Berlind, K. Sellgren, R. W. Pogge

arxiv:astro-ph/9704156 v1 · 1997-04-16 · 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{GOYJC6ZMVGRXP6Q2J3N5N6QR4Z}

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	2026-05-18T01:07:38.476639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33b0917b2ca9a377fa1a4edbd6fa11e66baa35f715bf4205a05854c19cd0be99

Aliases

arxiv: astro-ph/9704156 · arxiv_version: astro-ph/9704156v1 · doi: 10.48550/arxiv.astro-ph/9704156 · pith_short_12: GOYJC6ZMVGRX · pith_short_16: GOYJC6ZMVGRXP6Q2 · pith_short_8: GOYJC6ZM

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/GOYJC6ZMVGRXP6Q2J3N5N6QR4Z \
  | 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: 33b0917b2ca9a377fa1a4edbd6fa11e66baa35f715bf4205a05854c19cd0be99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ac85a92be1bc45318d379ccb78cf589b9d1bf75dd61f418c3e70e2fffda13d2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-16T01:54:52Z",
    "title_canon_sha256": "2e36a22a809ce4712061593ac2c45fadfe1585291e082b267100ccdc0e3d63e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704156",
    "kind": "arxiv",
    "version": 1
  }
}