Pith Number

pith:ZS7HTEQW

pith:1998:ZS7HTEQWF2PRRZB3ZIZSTWRBOL

not attested not anchored not stored refs pending

ORFEUS II echelle spectra: Detection of H_2 absorption in SMC gas

G.Kraemer, H. Widmann, I.Appenzeller, J. Barnstedt, K.S. de Boer, K. Werner, M. Goelz, M. Grewing, N. Kappelmann, P. Richter, W. Gringel

arxiv:astro-ph/9808258 v1 · 1998-08-24 · 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{ZS7HTEQWF2PRRZB3ZIZSTWRBOL}

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	2026-05-18T01:07:37.128529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccbe7992162e9f18e43bca3329da2172e23336fb9dda76de43cc96ff4d9f078e

Aliases

arxiv: astro-ph/9808258 · arxiv_version: astro-ph/9808258v1 · doi: 10.48550/arxiv.astro-ph/9808258 · pith_short_12: ZS7HTEQWF2PR · pith_short_16: ZS7HTEQWF2PRRZB3 · pith_short_8: ZS7HTEQW

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/ZS7HTEQWF2PRRZB3ZIZSTWRBOL \
  | 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: ccbe7992162e9f18e43bca3329da2172e23336fb9dda76de43cc96ff4d9f078e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "96ce3c79e19116a5c825200f3a3e9252a3224d39f0e627207da65f6c9558e41d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-08-24T09:45:24Z",
    "title_canon_sha256": "b3674d10ca6a9419955484e36ac981b5826297d3f30520113c873afe620a5423"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9808258",
    "kind": "arxiv",
    "version": 1
  }
}