Pith Number

pith:GHCQOGX7

pith:2015:GHCQOGX7N2ZSYSUPAOTHA5U4Q5

not attested not anchored not stored refs pending

Late-time spectroscopy of SN 2002hh: A continued visible light echo with no shock interaction yet

Jennifer E. Andrews, Jon C. Mauerhan, Nathan Smith

arxiv:1505.03471 v1 · 2015-05-13 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GHCQOGX7N2ZSYSUPAOTHA5U4Q5}

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	2026-05-18T02:12:01.235974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31c5071aff6eb32c4a8f03a670769c875b1b5f288119fe652bf114512b2c1fac

Aliases

arxiv: 1505.03471 · arxiv_version: 1505.03471v1 · doi: 10.48550/arxiv.1505.03471 · pith_short_12: GHCQOGX7N2ZS · pith_short_16: GHCQOGX7N2ZSYSUP · pith_short_8: GHCQOGX7

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/GHCQOGX7N2ZSYSUPAOTHA5U4Q5 \
  | 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: 31c5071aff6eb32c4a8f03a670769c875b1b5f288119fe652bf114512b2c1fac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2566017515845c0c375948f6430573c62e7f3fe45c637596f89edeb8c8bd61b7",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-05-13T17:41:44Z",
    "title_canon_sha256": "3106c4b1cbb5259974b8c56a30d11c1aaa792bef6310d839cb2d52a5f6f66506"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03471",
    "kind": "arxiv",
    "version": 1
  }
}