Pith Number

pith:I4RYKNVP

pith:2009:I4RYKNVP3TAYLQNOD7M23JTQNA

not attested not anchored not stored refs pending

Spectral classification of the mass donors in the high-mass X-ray binaries EXO 1722-363 and OAO 1657-415

A. B. Mason, A. J. Norton, I. Negueruela, J. S. Clark, P. Roche

arxiv:0907.3876 v1 · 2009-07-22 · astro-ph.SR · 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{I4RYKNVP3TAYLQNOD7M23JTQNA}

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	2026-05-18T02:12:54.639749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47238536afdcc185c1ae1fd9ada67068397a6c88c855f6feaefc0a50c2c9cf3c

Aliases

arxiv: 0907.3876 · arxiv_version: 0907.3876v1 · doi: 10.48550/arxiv.0907.3876 · pith_short_12: I4RYKNVP3TAY · pith_short_16: I4RYKNVP3TAYLQNO · pith_short_8: I4RYKNVP

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/I4RYKNVP3TAYLQNOD7M23JTQNA \
  | 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: 47238536afdcc185c1ae1fd9ada67068397a6c88c855f6feaefc0a50c2c9cf3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f5acdc793a1f8c6586690d1e42ea4bba8a51ee459bb38ec4ff20f2d78b8072b",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-22T16:55:19Z",
    "title_canon_sha256": "ade0c344d23cf4782b8f5076adf6955dc551fa3667bd220db22c609c0451002d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3876",
    "kind": "arxiv",
    "version": 1
  }
}