Pith Number

pith:RCQVGSZO

pith:2008:RCQVGSZOU7YK3GJGECM6X7MRRE

not attested not anchored not stored refs pending

Optical Spectroscopy of X-ray sources in the Extended Chandra Deep Field South

C. M. Urry (Yale), C. N. Cardamone (Yale), E. Gawiser (Rutgers), E. N. Taylor (Leiden), E. Treister (IfA, G. A. Blanc (Texas), Hawaii), H. Francke (U. de Chile), K. Schawinski (Yale), M. Damen, P. Lira, S. Virani (Yale)

arxiv:0810.3917 v2 · 2008-10-21 · 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{RCQVGSZOU7YK3GJGECM6X7MRRE}

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	2026-05-18T04:29:25.810272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88a1534b2ea7f0ad99262099ebfd91890636ecbaf96450ffdd5e52abf97460d9

Aliases

arxiv: 0810.3917 · arxiv_version: 0810.3917v2 · doi: 10.48550/arxiv.0810.3917 · pith_short_12: RCQVGSZOU7YK · pith_short_16: RCQVGSZOU7YK3GJG · pith_short_8: RCQVGSZO

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/RCQVGSZOU7YK3GJGECM6X7MRRE \
  | 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: 88a1534b2ea7f0ad99262099ebfd91890636ecbaf96450ffdd5e52abf97460d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff6ce8320b1d3491875eaf630171af4a562f6fa7ae2319e8909e0df7ca068a58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-21T20:02:45Z",
    "title_canon_sha256": "34b2ae0b0a042b3a82dba20675bd8195eb76909ca9cab1076a4c4429bd4ac592"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3917",
    "kind": "arxiv",
    "version": 2
  }
}