Pith Number

pith:QEIQEWLL

pith:2013:QEIQEWLLTGRQMYYB7Y2QV5U5LF

not attested not anchored not stored refs pending

The Earliest Near-infrared Time-series Spectroscopy of a Type Ia Supernova

C. Contreras, C. L. Gerardy, C. R. Burns, C. Winge, E. E. E. Gall, E. Y. Hsiao, G. H. Marion, G. Pignata, M. Im, M. Kromer, M. M. Phillips, M. Roth, M. Stritzinger, N. B. Suntzeff, N. Morrell, P. E. Nugent, P. H. Hoeflich, R. P. Kirshner, S. E. Persson, V. Stanishev, W. L. Freedman, Y. Jeon

arxiv:1301.6287 v1 · 2013-01-26 · astro-ph.CO · 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{QEIQEWLLTGRQMYYB7Y2QV5U5LF}

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	2026-05-18T01:51:58.202527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

811102596b99a3066301fe350af69d595c828d03fa4d0f18243b829625118af9

Aliases

arxiv: 1301.6287 · arxiv_version: 1301.6287v1 · doi: 10.48550/arxiv.1301.6287 · pith_short_12: QEIQEWLLTGRQ · pith_short_16: QEIQEWLLTGRQMYYB · pith_short_8: QEIQEWLL

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/QEIQEWLLTGRQMYYB7Y2QV5U5LF \
  | 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: 811102596b99a3066301fe350af69d595c828d03fa4d0f18243b829625118af9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f17548c30089c2ddc5837fb2e27742ff2cd9d3cc50cab99f928a1ba579d3f20",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-26T21:15:23Z",
    "title_canon_sha256": "00640589b71bd91c63f6e39cee9fb7668fe5041da8fc87ac9b86450ba9eda3d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6287",
    "kind": "arxiv",
    "version": 1
  }
}