Pith Number

pith:JDWQK3FV

pith:2009:JDWQK3FVJG7S2TMBODNZ27KRFP

not attested not anchored not stored refs pending

The VLA survey of the Chandra Deep Field South III: X-ray spectral properties of radio sources

B.D. Lehmer, C. Norman, E. Fomalont, G. Hasinger, J. Bergeron, J. Silverman, K. I. Kellermann, M. Brusa, M. Nonino, N. Miller, P. Padovani, P. Rosati, P. Shaver, P. Tozzi, R. Giacconi, V. Mainieri, W.N. Brandt

arxiv:0902.2930 v1 · 2009-02-17 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JDWQK3FVJG7S2TMBODNZ27KRFP}

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	2026-05-18T04:29:16.474811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48ed056cb549bf2d4d8170db9d7d512be9ee02a6e346f2479942738f66a09b1b

Aliases

arxiv: 0902.2930 · arxiv_version: 0902.2930v1 · doi: 10.48550/arxiv.0902.2930 · pith_short_12: JDWQK3FVJG7S · pith_short_16: JDWQK3FVJG7S2TMB · pith_short_8: JDWQK3FV

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/JDWQK3FVJG7S2TMBODNZ27KRFP \
  | 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: 48ed056cb549bf2d4d8170db9d7d512be9ee02a6e346f2479942738f66a09b1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19cbf8b034c652e56288b8742ee9365feb08552ee9159f7adc6f1bfb76db66e5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-02-17T14:34:14Z",
    "title_canon_sha256": "610561cf026e2d3cdd2f53e337f3b7a21b785410cf27fce88000eb58c09567f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2930",
    "kind": "arxiv",
    "version": 1
  }
}