Pith Number

pith:PBJVJCAI

pith:2008:PBJVJCAIAE4HMOTLB4ESVIBF7U

not attested not anchored not stored refs pending

The VLA Survey of the Chandra Deep Field South. IV. Source Population

(2) INAF, Charlottesville (4) JHU), E. B. Fomalont (3), K. I. Kellermann (3), N. Miller (4), P. Padovani (1), P. Rosati (1), P. Shaver (1) ((1) ESO, P. Tozzi (2), Trieste (3) NRAO, V. Mainieri (1)

arxiv:0812.2997 v1 · 2008-12-16 · astro-ph

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

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	2026-05-18T04:29:24.456771Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78535488080138763a6b0f092aa025fd2f19fee05ae8402cda08cc01fe899d9f

Aliases

arxiv: 0812.2997 · arxiv_version: 0812.2997v1 · doi: 10.48550/arxiv.0812.2997 · pith_short_12: PBJVJCAIAE4H · pith_short_16: PBJVJCAIAE4HMOTL · pith_short_8: PBJVJCAI

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/PBJVJCAIAE4HMOTLB4ESVIBF7U \
  | 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: 78535488080138763a6b0f092aa025fd2f19fee05ae8402cda08cc01fe899d9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06ffed013b53f623740c8f5bfc2572c70a9a038d95c0dfa0ebdeb56852bdd28a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-12-16T08:18:34Z",
    "title_canon_sha256": "afd2629eae27650823046e433b0018f7b8b20f6927f1c30a525150c61afe22da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2997",
    "kind": "arxiv",
    "version": 1
  }
}