Pith Number

pith:NCQYAKNY

pith:2015:NCQYAKNYZ7ZAXYNTV6U3SCUIEK

not attested not anchored not stored refs pending

The photospheric solar oxygen project: III. Investigation of the centre-to-limb variation of the 630nm [OI]-NiI blend

E. Caffau, H.-G. Ludwig, H.-P. Doerr, J.-M. Malherbe, M. Steffen, P. Bonifacio, W. Livingston, W. Schmidt

arxiv:1506.00931 v1 · 2015-06-02 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NCQYAKNYZ7ZAXYNTV6U3SCUIEK}

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	2026-05-18T01:36:53.142094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68a18029b8cff20be1b3afa9b90a882282d218cc749aec7d980189a2c55a13f4

Aliases

arxiv: 1506.00931 · arxiv_version: 1506.00931v1 · doi: 10.48550/arxiv.1506.00931 · pith_short_12: NCQYAKNYZ7ZA · pith_short_16: NCQYAKNYZ7ZAXYNT · pith_short_8: NCQYAKNY

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/NCQYAKNYZ7ZAXYNTV6U3SCUIEK \
  | 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: 68a18029b8cff20be1b3afa9b90a882282d218cc749aec7d980189a2c55a13f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a84ed67cb8a5a4ee952167802e856eaf083f37410b9edc061e0064c158e1280f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-06-02T15:41:51Z",
    "title_canon_sha256": "ce06addeec4dc1e6a07c7c8c0778f2148b60399c7cf756e034a8642e50c37921"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.00931",
    "kind": "arxiv",
    "version": 1
  }
}