Pith Number

pith:EXHUOSGI

pith:2010:EXHUOSGIATBGA4HOW4DYWAN5NJ

not attested not anchored not stored refs pending

The Extended Chandra Deep Field-South Survey: Optical spectroscopy of faint X-ray sources with the VLT and Keck

A. Comastri, A. Finoguenov, A. M. Koekemoer, B. D. Lehmer, B. Luo, C. Vignali, D. M. Alexander, D. P. Schneider, D. Rafferty, E. Treister, F. E. Bauer, G. Hasinger, G. Szokoly, I. Balestra, J. Bergeron, J. D. Silverman, J. Kartaltepe, L. Wisotski, M. Brusa, M. Salvato, M. Schramm, P. Capak, P. Rosati, P. Tozzi, R. Gilli, T. Miyaji, V. Mainieri, W. N. Brandt, Y. Q. Xue

arxiv:1009.1923 v1 · 2010-09-10 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXHUOSGIATBGA4HOW4DYWAN5NJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:05:32.254275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25cf4748c804c26070eeb7078b01bd6a639e3a1a7a5299f526a8ddff343c1732

Aliases

arxiv: 1009.1923 · arxiv_version: 1009.1923v1 · doi: 10.48550/arxiv.1009.1923 · pith_short_12: EXHUOSGIATBG · pith_short_16: EXHUOSGIATBGA4HO · pith_short_8: EXHUOSGI

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/EXHUOSGIATBGA4HOW4DYWAN5NJ \
  | 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: 25cf4748c804c26070eeb7078b01bd6a639e3a1a7a5299f526a8ddff343c1732

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26ef829b31261d703a032e25d513c7c44d6528eecd463a6d94dda7625d12b1f8",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-09-10T02:20:42Z",
    "title_canon_sha256": "18888e8adb3fd454fa144b131c647884100cb1c7d2d14c272dd185f359bc8dc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.1923",
    "kind": "arxiv",
    "version": 1
  }
}