Pith Number

pith:FTSJLKWL

pith:2015:FTSJLKWL4OKQ2FP6QZK3JD6UWD

not attested not anchored not stored refs pending

Extensive Spectroscopy and Photometry of the Type IIP Supernova 2013ej

A. Ordasi, A. Pal, A. P. Nagy, A. Szing, A. V. Filippenko, B. I. Biro, C. A. Gibson, C. Akerlof, E. Szegedi-Elek, F. V. Ferrante, G. Dhungana, G. H. Marion, G. Marschalko, I. Shivvers, J. C. Wheeler, J. Kelemen, J. M. Silverman, J. Vinko, K. I. Clubb, K. Sarneczky, K. Tak\'ats, K. Vida, L. Moln\'ar, M. L. Graham, O. D. Fox, P. Kelly, P. Sz\'ekely, R. Kehoe, R. Szakats, S. B. Cenko, T. Borkovits, T. Hegedus, T. Szalai, W. H. Lee, W. Zheng

arxiv:1509.01721 v2 · 2015-09-05 · astro-ph.SR · 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{FTSJLKWL4OKQ2FP6QZK3JD6UWD}

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	2026-05-18T01:16:18.231564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce495aacbe3950d15fe8655b48fd4b0c8ebfaa6c91d86f94aa0eb4ec1140360

Aliases

arxiv: 1509.01721 · arxiv_version: 1509.01721v2 · doi: 10.48550/arxiv.1509.01721 · pith_short_12: FTSJLKWL4OKQ · pith_short_16: FTSJLKWL4OKQ2FP6 · pith_short_8: FTSJLKWL

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/FTSJLKWL4OKQ2FP6QZK3JD6UWD \
  | 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: 2ce495aacbe3950d15fe8655b48fd4b0c8ebfaa6c91d86f94aa0eb4ec1140360

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7805188bf5e566bb1ed95625bb1653537f43ac52389503c2f468c137508afde0",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-09-05T17:38:04Z",
    "title_canon_sha256": "adc87c2a0acd09950a92522c255eaf274f989bc12a5b40c4da7b76e9083fd135"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01721",
    "kind": "arxiv",
    "version": 2
  }
}