Pith Number

pith:Q7NTNYRL

pith:2004:Q7NTNYRLA7XOZLTX22Z7DTYFU4

not attested not anchored not stored refs pending

8--13 um spectroscopy of YSOs: Evolution of the silicate feature

G. A. Blake (Caltech), J. E. Kessler-Silacci (The University of Texas at Austin), L. A. Hillenbrand (Caltech), M. R. Meyer (Steward Observatory, The University of Arizona)

arxiv:astro-ph/0412033 v1 · 2004-12-01 · 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{Q7NTNYRLA7XOZLTX22Z7DTYFU4}

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	2026-07-04T16:45:20.214829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87db36e22b07eeecae77d6b3f1cf05a718baab03c9cf4c5f4dc6e6e33aebc889

Aliases

arxiv: astro-ph/0412033 · arxiv_version: astro-ph/0412033v1 · doi: 10.48550/arxiv.astro-ph/0412033 · pith_short_12: Q7NTNYRLA7XO · pith_short_16: Q7NTNYRLA7XOZLTX · pith_short_8: Q7NTNYRL

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/Q7NTNYRLA7XOZLTX22Z7DTYFU4 \
  | 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: 87db36e22b07eeecae77d6b3f1cf05a718baab03c9cf4c5f4dc6e6e33aebc889

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ab6c188d33632a6431447ad66a5660529c3d1133f5b756ca78a3b027afad07b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-12-01T20:42:17Z",
    "title_canon_sha256": "9dbff900ca166565c67fe9156156e011b1fce5e60e2b8cea13ec7efd5566084f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0412033",
    "kind": "arxiv",
    "version": 1
  }
}