Pith Number

pith:UHLC7XW6

pith:2008:UHLC7XW6F4BZCRG3GASI75TLYT

not attested not anchored not stored refs pending

The characteristics of the IR emission features in the spectra of Herbig Ae stars: Evidence for chemical evolution

A.G.G.M. Tielens, C. Boersma, C. Van Kerckhoven, F. Lahuis, J. Bouwman, L.B.F.M. Waters, Th. Henning

arxiv:0804.1199 v1 · 2008-04-08 · 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{UHLC7XW6F4BZCRG3GASI75TLYT}

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	2026-07-04T17:10:15.519836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1d62fdede2f039144db30248ff66bc4d9a71654e5bef2a80c0514c93f09a4ed

Aliases

arxiv: 0804.1199 · arxiv_version: 0804.1199v1 · doi: 10.48550/arxiv.0804.1199 · pith_short_12: UHLC7XW6F4BZ · pith_short_16: UHLC7XW6F4BZCRG3 · pith_short_8: UHLC7XW6

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/UHLC7XW6F4BZCRG3GASI75TLYT \
  | 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: a1d62fdede2f039144db30248ff66bc4d9a71654e5bef2a80c0514c93f09a4ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "045addf4050f54c5bb992c1bb3f1f6f0830a351aef6e0d488a41dd71a1ec9ace",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-08T07:45:13Z",
    "title_canon_sha256": "a1897b8d07c98ac9a318a108453757c94c64706b980cc6196ea940529f1434c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1199",
    "kind": "arxiv",
    "version": 1
  }
}