Pith Number

pith:YFSDYRM7

pith:2008:YFSDYRM7RJZZX26PS6YZNQCSND

not attested not anchored not stored refs pending

Spectroscopic ages and metallicities of stellar populations: validation of full spectrum fitting

C. Soubiran, D. Le Borgne, M. Koleva, Ph. Prugniel, P. Ocvirk

arxiv:0801.0871 v1 · 2008-01-06 · 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{YFSDYRM7RJZZX26PS6YZNQCSND}

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	2026-07-04T17:08:18.682547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1643c459f8a739bebcf97b196c05268e9ceb799fc53508692fc3b9a0bc96535

Aliases

arxiv: 0801.0871 · arxiv_version: 0801.0871v1 · doi: 10.48550/arxiv.0801.0871 · pith_short_12: YFSDYRM7RJZZ · pith_short_16: YFSDYRM7RJZZX26P · pith_short_8: YFSDYRM7

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/YFSDYRM7RJZZX26PS6YZNQCSND \
  | 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: c1643c459f8a739bebcf97b196c05268e9ceb799fc53508692fc3b9a0bc96535

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a7f8ea1b8726f6efe1b69b046e0debd840c465c9266d44b24c80388924d2199",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-06T16:18:30Z",
    "title_canon_sha256": "17acda6f392796b05808c9d86ec29830fb32f589f26f6d8748986ba1f8ea90a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.0871",
    "kind": "arxiv",
    "version": 1
  }
}