Pith Number

pith:PYU73DLP

pith:2013:PYU73DLP66BGPBC6JAAHLHZD4A

not attested not anchored not stored refs pending

High-Velocity Features in Type Ia Supernova Spectra

Alexei V. Filippenko, Brian P. Schmidt, Michael J. Childress, Mohan Ganeshalingam

arxiv:1307.0563 v2 · 2013-07-02 · 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{PYU73DLP66BGPBC6JAAHLHZD4A}

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	2026-05-18T01:49:00.850151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e29fd8d6ff78267845e4800759f23e0248dd73832841cb10881dda4a6610077

Aliases

arxiv: 1307.0563 · arxiv_version: 1307.0563v2 · doi: 10.48550/arxiv.1307.0563 · pith_short_12: PYU73DLP66BG · pith_short_16: PYU73DLP66BGPBC6 · pith_short_8: PYU73DLP

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/PYU73DLP66BGPBC6JAAHLHZD4A \
  | 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: 7e29fd8d6ff78267845e4800759f23e0248dd73832841cb10881dda4a6610077

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2484c2f438392ac749790c415c3da6fd0f92bf9556316ec6d31b7b4afbe88a7f",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-02T00:12:00Z",
    "title_canon_sha256": "b10bba81268787a42f366f88e547a1a28ad55ae027af771834ce683a7ce3c12d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.0563",
    "kind": "arxiv",
    "version": 2
  }
}