Pith Number

pith:TFKQSUJX

pith:2012:TFKQSUJX2MPYXQJDMCHCA5GCBU

not attested not anchored not stored refs pending

Cosmic star formation rate: a theoretical approach

F. Calura, F. Matteucci, G. Granato, L. Silva, L. Vincoletto

arxiv:1201.1751 v1 · 2012-01-09 · 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{TFKQSUJX2MPYXQJDMCHCA5GCBU}

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	2026-05-18T01:58:54.124591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9955095137d31f8bc123608e2074c20d210a0631ebb4b317fbdc060c4ba9ae63

Aliases

arxiv: 1201.1751 · arxiv_version: 1201.1751v1 · doi: 10.48550/arxiv.1201.1751 · pith_short_12: TFKQSUJX2MPY · pith_short_16: TFKQSUJX2MPYXQJD · pith_short_8: TFKQSUJX

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/TFKQSUJX2MPYXQJDMCHCA5GCBU \
  | 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: 9955095137d31f8bc123608e2074c20d210a0631ebb4b317fbdc060c4ba9ae63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2584b114928959c8fbd31199ecc70dc554ee4ceb90d6e7747f1d5f55c9f32930",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-01-09T13:14:51Z",
    "title_canon_sha256": "d85f6c2c2efc6da50134862931d427a031c78be73816fb25defaa09d4f5e1ef3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1751",
    "kind": "arxiv",
    "version": 1
  }
}