Pith Number

pith:QT3HQ2IG

pith:2015:QT3HQ2IGBOLYHHEAKBSUFCGALX

not attested not anchored not stored refs pending

Confirmation of Hostless Type Ia Supernovae Using Hubble Space Telescope Imaging

Chris J. Pritchet, David J. Sand, Dennis Zaritsky, Melissa L. Graham

arxiv:1505.03407 v1 · 2015-05-13 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QT3HQ2IGBOLYHHEAKBSUFCGALX}

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	2026-05-18T01:36:53.563698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84f67869060b97839c8050654288c05ddf92972f8aee6ed9f704408c422fb62c

Aliases

arxiv: 1505.03407 · arxiv_version: 1505.03407v1 · doi: 10.48550/arxiv.1505.03407 · pith_short_12: QT3HQ2IGBOLY · pith_short_16: QT3HQ2IGBOLYHHEA · pith_short_8: QT3HQ2IG

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/QT3HQ2IGBOLYHHEAKBSUFCGALX \
  | 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: 84f67869060b97839c8050654288c05ddf92972f8aee6ed9f704408c422fb62c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdc1beb973cc3efe65ea5cece6da3c2482a3361f00a2a6319daf371dae2cc36c",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-05-13T14:41:21Z",
    "title_canon_sha256": "db20520c1b00c103f7c1f0ee8048c16bc7a01024930f93b50900ac91ddca09e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03407",
    "kind": "arxiv",
    "version": 1
  }
}