Pith Number

pith:4TRQNXOK

pith:2009:4TRQNXOKG55VQFBMDFSLMTNN54

not attested not anchored not stored refs pending

Cosmic star-formation history from a non-parametric inversion of infrared galaxy counts

2), (2) Institut d'Astrophysique de Paris, (3) Astrophysikalisches Institut Potsdam, Christophe Pichon (2) ((1) CEA/Saclay, Damien Le Borgne (1, David Elbaz (1), DSM/IRFU/SAp, France, Germany), Gif-sur-Yvette, Paris, Pierre Ocvirk (3), Potsdam, UMR7095, UPMC

arxiv:0901.3783 v3 · 2009-01-23 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TRQNXOKG55VQFBMDFSLMTNN54}

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	2026-05-18T02:14:56.054786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4e306ddca377b58142c1964b64dadef0883d50c84caf312aa38de574d59ea1d

Aliases

arxiv: 0901.3783 · arxiv_version: 0901.3783v3 · doi: 10.48550/arxiv.0901.3783 · pith_short_12: 4TRQNXOKG55V · pith_short_16: 4TRQNXOKG55VQFBM · pith_short_8: 4TRQNXOK

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/4TRQNXOKG55VQFBMDFSLMTNN54 \
  | 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: e4e306ddca377b58142c1964b64dadef0883d50c84caf312aa38de574d59ea1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "453b37cf0d6f472fc5d11a75b72404b80dc4a4de2f3416cb13b26fef76fa51b8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-23T21:13:05Z",
    "title_canon_sha256": "52f77304199cc6c2e8647ae11f8fa912e82451a55d29b891c32767d1d5c03829"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.3783",
    "kind": "arxiv",
    "version": 3
  }
}