Pith Number

pith:7J7UGFJN

pith:2016:7J7UGFJNVVV2JPTC4DBNFNSQFP

not attested not anchored not stored refs pending

First Detection of Hydrogen in the \beta\ Pictoris Gas Disk

A. Lecavelier des Etangs, A.-M. Lagrange, A. Vidal-Madjar, F. Kiefer, G. H\'ebrard, H. Beust, P. A. Wilson, R. Ferlet, V. Bourrier

arxiv:1612.00848 v1 · 2016-12-02 · astro-ph.SR · astro-ph.EP · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7J7UGFJNVVV2JPTC4DBNFNSQFP}

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	2026-05-18T00:49:11.072828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa7f43152dad6ba4be62e0c2d2b6502be88a49293dde69040e54d773db625771

Aliases

arxiv: 1612.00848 · arxiv_version: 1612.00848v1 · doi: 10.48550/arxiv.1612.00848 · pith_short_12: 7J7UGFJNVVV2 · pith_short_16: 7J7UGFJNVVV2JPTC · pith_short_8: 7J7UGFJN

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/7J7UGFJNVVV2JPTC4DBNFNSQFP \
  | 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: fa7f43152dad6ba4be62e0c2d2b6502be88a49293dde69040e54d773db625771

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea218552ca7f414cd0a4561e56f2384ab22c92e0e8d318e4a09e8e88389bebe7",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-12-02T21:00:01Z",
    "title_canon_sha256": "ef777eb3b95092e9b697359f12add4a2996abd8a52a7def9a90a6bb81cc28361"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.00848",
    "kind": "arxiv",
    "version": 1
  }
}