Pith Number

pith:PHIKYQC6

pith:1999:PHIKYQC66KFT4T6NCEDCSKNUWU

not attested not anchored not stored refs pending

No Increase of the Red-Giant-Branch Tip Luminosity Toward the Center of M31

A. Maeder, A. Sarajedini, G. Meylan, G. Meynet, P. Jablonka, T.J. Bridges

arxiv:astro-ph/9902211 v1 · 1999-02-15 · 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{PHIKYQC66KFT4T6NCEDCSKNUWU}

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	2026-07-04T16:10:42.767124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79d0ac405ef28b3e4fcd11062929b4b53661ccb5f2d237529d8e27d86f96d36d

Aliases

arxiv: astro-ph/9902211 · arxiv_version: astro-ph/9902211v1 · doi: 10.48550/arxiv.astro-ph/9902211 · pith_short_12: PHIKYQC66KFT · pith_short_16: PHIKYQC66KFT4T6N · pith_short_8: PHIKYQC6

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/PHIKYQC66KFT4T6NCEDCSKNUWU \
  | 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: 79d0ac405ef28b3e4fcd11062929b4b53661ccb5f2d237529d8e27d86f96d36d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "948fa4db289e1d9d08752bea211358f4ee367f4802adab596a2bf9cf8de82ba3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-02-15T16:13:31Z",
    "title_canon_sha256": "241ecd3f6c87c0f90f286b36145b1eedf669563621c86993de56e4a83b93539b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9902211",
    "kind": "arxiv",
    "version": 1
  }
}