Pith Number

pith:7ZFDFFUQ

pith:2015:7ZFDFFUQPWNCT4EDRNMG4FHPRJ

not attested not anchored not stored refs pending

Co-evolution of Extreme Star Formation and Quasar: hints from {\it Herschel} and the Sloan Digital Sky Survey

Haojing Yan, Zhiyuan Ma

arxiv:1501.01240 v2 · 2015-01-06 · 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{7ZFDFFUQPWNCT4EDRNMG4FHPRJ}

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	2026-05-18T01:31:45.873403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe4a3296907d9a29f0838b586e14ef8a6957d06fdff4fff0218f2730fd5235ff

Aliases

arxiv: 1501.01240 · arxiv_version: 1501.01240v2 · doi: 10.48550/arxiv.1501.01240 · pith_short_12: 7ZFDFFUQPWNC · pith_short_16: 7ZFDFFUQPWNCT4ED · pith_short_8: 7ZFDFFUQ

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/7ZFDFFUQPWNCT4EDRNMG4FHPRJ \
  | 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: fe4a3296907d9a29f0838b586e14ef8a6957d06fdff4fff0218f2730fd5235ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99126a28a9475bba46ec525631b6295f9cf8f91e2d0b3de8f94c2241d211c6c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-06T17:15:44Z",
    "title_canon_sha256": "407f6552c3cfb81aa8eda2bf5ec767cfd6b417720eeaca8205d1dc9d1d549c97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01240",
    "kind": "arxiv",
    "version": 2
  }
}