Pith Number

pith:PK2W4OV7

pith:2009:PK2W4OV7FQURL7HDCCSIE53AWX

not attested not anchored not stored refs pending

On the impact of intergalactic dust on cosmology with type Ia supernovae

Brice M\'enard, Martin Kilbinger, Ryan Scranton

arxiv:0903.4199 v2 · 2009-03-25 · 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{PK2W4OV7FQURL7HDCCSIE53AWX}

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	2026-05-18T02:14:26.135791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ab56e3abf2c2915fce310a4827760b5ce8fdfdb1c6a56a5ccc84fe58ea04536

Aliases

arxiv: 0903.4199 · arxiv_version: 0903.4199v2 · doi: 10.48550/arxiv.0903.4199 · pith_short_12: PK2W4OV7FQUR · pith_short_16: PK2W4OV7FQURL7HD · pith_short_8: PK2W4OV7

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/PK2W4OV7FQURL7HDCCSIE53AWX \
  | 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: 7ab56e3abf2c2915fce310a4827760b5ce8fdfdb1c6a56a5ccc84fe58ea04536

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee2f3df3df5e65cdb8bca33929f0c5fdb523c2ed38fe541e481088e58eb9fc8e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-03-25T19:46:03Z",
    "title_canon_sha256": "4b27c7e651ab38d54e6be99760275e2c7050d044512c729d9cd4cbd4994a1259"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4199",
    "kind": "arxiv",
    "version": 2
  }
}