Pith Number

pith:NYJQ5X37

pith:2000:NYJQ5X37SVM3MPUWI37EX77ZFP

not attested not anchored not stored refs pending

HST Spectroscopy of Spot 1 on the Circumstellar Ring of SN 1987A

Alexei V. Filippenko, Claes Fransson, C. S. J. Pun, Eli Michael, George Sonneborn, J. Craig Wheeler, John Raymond, Kazimierz Borkowski, Lifan Wang, M. M. Phillips, Nicholas B. Suntzeff, Nino Panagia, Peter Challis, Peter Garnavich, Peter Lundqvist, Richard McCray, Robert P. Kirshner, Roger Chevalier

arxiv:astro-ph/0008130 v1 · 2000-08-08 · 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{NYJQ5X37SVM3MPUWI37EX77ZFP}

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	2026-07-04T16:17:01.400473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e130edf7f9559b63e9646fe4bfff92bd908b553eae31241a3c0353905ee9f7a

Aliases

arxiv: astro-ph/0008130 · arxiv_version: astro-ph/0008130v1 · doi: 10.48550/arxiv.astro-ph/0008130 · pith_short_12: NYJQ5X37SVM3 · pith_short_16: NYJQ5X37SVM3MPUW · pith_short_8: NYJQ5X37

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/NYJQ5X37SVM3MPUWI37EX77ZFP \
  | 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: 6e130edf7f9559b63e9646fe4bfff92bd908b553eae31241a3c0353905ee9f7a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cede4591507eba123c537fb2643cc22ac21fa52f513842951b0f8d9117b0feb",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-08-08T20:24:08Z",
    "title_canon_sha256": "99b445635549ddd33b4badef5487f422511387dfbe95c3a365389df9df9cc325"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0008130",
    "kind": "arxiv",
    "version": 1
  }
}