Pith Number

pith:GC6PUKZF

pith:2015:GC6PUKZFV22ORPYYXEWUS6DD4S

not attested not anchored not stored refs pending

Helium diffusion during formation of the first galaxies

1) ((1) Space Research Institute, 2), (2) Moscow Institute of Physics, (3) Max-Planck-Institut f\"ur Astrophysik, Garching bei M\"unchen, Germany), M. Gilfanov (3, Moscow, Moscow region, P. Medvedev (1), Russia, S. Sazonov (1, Technology

arxiv:1511.07490 v2 · 2015-11-23 · 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{GC6PUKZFV22ORPYYXEWUS6DD4S}

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	2026-05-18T01:19:00.114542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30bcfa2b25aeb4e8bf18b92d497863e4984c61dfbe528f712337fde14ff32de8

Aliases

arxiv: 1511.07490 · arxiv_version: 1511.07490v2 · doi: 10.48550/arxiv.1511.07490 · pith_short_12: GC6PUKZFV22O · pith_short_16: GC6PUKZFV22ORPYY · pith_short_8: GC6PUKZF

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/GC6PUKZFV22ORPYYXEWUS6DD4S \
  | 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: 30bcfa2b25aeb4e8bf18b92d497863e4984c61dfbe528f712337fde14ff32de8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a07fa45a6ae262db1efebc1048aaf162b98c0465fde9f1028a2fc5ab61d35df6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-11-23T22:14:09Z",
    "title_canon_sha256": "1d14e93df9300060e4545de6bf2d5f8f8703cea13d7ef7bd10cddc77a169a803"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.07490",
    "kind": "arxiv",
    "version": 2
  }
}