Pith Number

pith:CZM24TPM

pith:2012:CZM24TPMPQIEWE27MX43AVAHLZ

not attested not anchored not stored refs pending

Deep Chandra Monitoring Observations of NGC 4649: I. Catalog of Source Properties

A. King, A. Zezas, B. Luo, D.-W. Kim, G. Fabbiano, J. P. Brodie, J. S. Gallagher, J. Strader, T. Fragos

arxiv:1211.2804 v1 · 2012-11-12 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CZM24TPMPQIEWE27MX43AVAHLZ}

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	2026-05-18T01:53:16.547038Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1659ae4dec7c104b135f65f9b054075e4f1ecb1eb59b26a904edb5e71ccacc3d

Aliases

arxiv: 1211.2804 · arxiv_version: 1211.2804v1 · doi: 10.48550/arxiv.1211.2804 · pith_short_12: CZM24TPMPQIE · pith_short_16: CZM24TPMPQIEWE27 · pith_short_8: CZM24TPM

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/CZM24TPMPQIEWE27MX43AVAHLZ \
  | 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: 1659ae4dec7c104b135f65f9b054075e4f1ecb1eb59b26a904edb5e71ccacc3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5ad1ae7487bda315b1dbae36528c12aac63d64e8b645a3e1dc1dfdbdc827292",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-12T21:00:01Z",
    "title_canon_sha256": "d9e1b1352f6e5bf5f2b87ce978424d5636107c91c425f3b388cb97bc06718332"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.2804",
    "kind": "arxiv",
    "version": 1
  }
}