Pith Number

pith:RMM4JAMH

pith:2009:RMM4JAMHC4VNIGT63DLQTH6P5T

not attested not anchored not stored refs pending

Chandra Observations of 1RXS J141256.0+792204 (Calvera)

Andrew S. H. Shevchuk, Derek B. Fox, Robert E. Rutledge

arxiv:0907.4352 v1 · 2009-07-24 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RMM4JAMHC4VNIGT63DLQTH6P5T}

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	2026-05-18T02:12:53.778127Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b19c48187172ad41a7ed8d7099fcfecc3e885b7f6db9a7a86d2716f12c5d187

Aliases

arxiv: 0907.4352 · arxiv_version: 0907.4352v1 · doi: 10.48550/arxiv.0907.4352 · pith_short_12: RMM4JAMHC4VN · pith_short_16: RMM4JAMHC4VNIGT6 · pith_short_8: RMM4JAMH

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/RMM4JAMHC4VNIGT63DLQTH6P5T \
  | 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: 8b19c48187172ad41a7ed8d7099fcfecc3e885b7f6db9a7a86d2716f12c5d187

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f8f2b506517ae1797080266cdd10b1e23831eb3215c76640a2280744b76eba3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-07-24T18:42:43Z",
    "title_canon_sha256": "856579995fd848b184101a8e13714e5faaea36acbebe3ad84bf4152a42df58e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4352",
    "kind": "arxiv",
    "version": 1
  }
}