Pith Number

pith:45PS2EKG

pith:2007:45PS2EKG2IHMQVUL4PXYJSSCJV

not attested not anchored not stored refs pending

ESC observations of SN 2005cf: II. Optical Spectroscopy and the high velocity features

A. Goobar, A. Pastorello, B. P. Schmidt, G. Blanc, G. Garavini, M. Salvo, N. Elias--Rosa, P. A. Mazzali, S. Benetti, S. F. Sanchez, S. Nobili, S. Taubenberger, V. Stanishev, W. Hillebrandt

arxiv:astro-ph/0702569 v1 · 2007-02-21 · 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{45PS2EKG2IHMQVUL4PXYJSSCJV}

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	2026-07-04T17:07:41.773387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e75f2d1146d20ec8568be3ef84ca424d50972b95de0b3d90aede33bf49269cc6

Aliases

arxiv: astro-ph/0702569 · arxiv_version: astro-ph/0702569v1 · doi: 10.48550/arxiv.astro-ph/0702569 · pith_short_12: 45PS2EKG2IHM · pith_short_16: 45PS2EKG2IHMQVUL · pith_short_8: 45PS2EKG

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/45PS2EKG2IHMQVUL4PXYJSSCJV \
  | 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: e75f2d1146d20ec8568be3ef84ca424d50972b95de0b3d90aede33bf49269cc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8979667770bc9ce9967b10e06d9820b207966a0417b38c813ff5caaf82dd2bc3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-21T14:41:10Z",
    "title_canon_sha256": "dd57c7d1a333496557c469e96e6bf68496bcc4c81f24cf9412fcb0f3d4702353"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702569",
    "kind": "arxiv",
    "version": 1
  }
}