Pith Number

pith:ZEP2LY4U

pith:2012:ZEP2LY4UD56PLV52SYINEHQ3BG

not attested not anchored not stored refs pending

Spectropolarimetry of the Type Ia SN 2007sr Two Months After Maximum Light

A. Clocchiatti, D. Baade, F. Patat, J.C. Wheeler, J. Maund, J.R. Quinn, L. Wang, P. H\"oflich, P. Zelaya

arxiv:1212.3619 v1 · 2012-12-14 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZEP2LY4UD56PLV52SYINEHQ3BG}

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	2026-05-18T01:52:38.020208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c91fa5e3941f7cf5d7ba9610d21e1b0995932e4d9b5b8d7b8606c304273a8e8f

Aliases

arxiv: 1212.3619 · arxiv_version: 1212.3619v1 · doi: 10.48550/arxiv.1212.3619 · pith_short_12: ZEP2LY4UD56P · pith_short_16: ZEP2LY4UD56PLV52 · pith_short_8: ZEP2LY4U

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/ZEP2LY4UD56PLV52SYINEHQ3BG \
  | 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: c91fa5e3941f7cf5d7ba9610d21e1b0995932e4d9b5b8d7b8606c304273a8e8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6aa1ee963c0591042f09971f940e3876bc3feb6d8c92a5b5fc915bd64b8a0331",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-12-14T21:06:41Z",
    "title_canon_sha256": "6583287b4e26c9c952bec27066f7efd10bf0f9cf5c15cd7ae948ab07c7f057ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.3619",
    "kind": "arxiv",
    "version": 1
  }
}