Pith Number

pith:AXLW3CN5

pith:2004:AXLW3CN5TBLGEBFURLYGAJOAI7

not attested not anchored not stored refs pending

Quasar Variability Measurements With SDSS Repeated Imaging and POSS Data

C.M. Rockosi, D.E. Vanden Berk, D.P. Schneider, D. Schlegel, E.L. Turner, G.R. Knapp, G.T. Richards, J.E. Gunn, M.A. Strauss, M. Juric, P.B. Hall, R.H. Lupton, S. Anderson, Z Ivezic

arxiv:astro-ph/0404487 v1 · 2004-04-26 · 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{AXLW3CN5TBLGEBFURLYGAJOAI7}

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	2026-07-04T16:43:38.674181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05d76d89bd98566204b48af06025c047cb3015ea3541a5fefee5b5645592f960

Aliases

arxiv: astro-ph/0404487 · arxiv_version: astro-ph/0404487v1 · doi: 10.48550/arxiv.astro-ph/0404487 · pith_short_12: AXLW3CN5TBLG · pith_short_16: AXLW3CN5TBLGEBFU · pith_short_8: AXLW3CN5

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/AXLW3CN5TBLGEBFURLYGAJOAI7 \
  | 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: 05d76d89bd98566204b48af06025c047cb3015ea3541a5fefee5b5645592f960

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fc4024fde07d4c872f33e6285ba17168b0b8a06b14e911b04827a31fcdfd6f2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-26T02:05:34Z",
    "title_canon_sha256": "3676c328d369b4d04f0aed86cc7f2f9163df9bfe2a579b2c5d6137d5fce82e50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404487",
    "kind": "arxiv",
    "version": 1
  }
}