Pith Number

pith:DDB2M7OT

pith:2001:DDB2M7OTKWHMNP56M62IVYWB4J

not attested not anchored not stored refs pending

Big-bang nucleosynthesis with the NACRE compilation

Alain Coc (CSNSM), Elisabeth Vangioni-Flam (IAP), IAP), Michel Casse (SAp

arxiv:astro-ph/0101286 v1 · 2001-01-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDB2M7OTKWHMNP56M62IVYWB4J}

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	2026-05-18T01:00:27.639564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18c3a67dd3558ec6bfbe67b48ae2c1e24bec05c59f756fdafd6e30a0fa3853c3

Aliases

arxiv: astro-ph/0101286 · arxiv_version: astro-ph/0101286v1 · doi: 10.48550/arxiv.astro-ph/0101286 · pith_short_12: DDB2M7OTKWHM · pith_short_16: DDB2M7OTKWHMNP56 · pith_short_8: DDB2M7OT

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/DDB2M7OTKWHMNP56M62IVYWB4J \
  | 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: 18c3a67dd3558ec6bfbe67b48ae2c1e24bec05c59f756fdafd6e30a0fa3853c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b082f81cfc37284d17732c641f46707a1a17e5b0b09a33d04c0649b095f52a0d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-01-17T10:30:26Z",
    "title_canon_sha256": "f38c203da439ebfb4be5a91b41915509f0d864f43a1a71b658cbf6702285ca0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0101286",
    "kind": "arxiv",
    "version": 1
  }
}