Pith Number

pith:I7M56SJQ

pith:2013:I7M56SJQHQOG6F4ZMUGUU3BZ63

not attested not anchored not stored refs pending

On the nature of the red, 2MASS selected AGN in the local Universe I: an optical spectroscopic study

Clive Tadhunter, Javier Rodr\'iguez Zaur\'in, Joanna Holt, Marvin Rose

arxiv:1303.7112 v1 · 2013-03-28 · 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{I7M56SJQHQOG6F4ZMUGUU3BZ63}

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	2026-05-18T01:50:51.562256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47d9df49303c1c6f1799650d4a6c39f6cce63ed0d96ac9e3afbac93964065bad

Aliases

arxiv: 1303.7112 · arxiv_version: 1303.7112v1 · doi: 10.48550/arxiv.1303.7112 · pith_short_12: I7M56SJQHQOG · pith_short_16: I7M56SJQHQOG6F4Z · pith_short_8: I7M56SJQ

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/I7M56SJQHQOG6F4ZMUGUU3BZ63 \
  | 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: 47d9df49303c1c6f1799650d4a6c39f6cce63ed0d96ac9e3afbac93964065bad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98ced73e91d09152d3b660b6dc41e6c0eac3e74908453b4c17e01c9f348d1c6a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-28T12:40:22Z",
    "title_canon_sha256": "9595b83611ee82ca63a5566a6586adc43e9dd3d946586a37d0aa5a6221844c7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7112",
    "kind": "arxiv",
    "version": 1
  }
}