Pith Number

pith:RIO77A2L

pith:2012:RIO77A2LRFGLZSCB64OJCLJEXQ

not attested not anchored not stored refs pending

Is there a compact companion orbiting the late O-type binary star HD 164816?

F. M. Walter, L. Trepl, M. M. Hohle, N. Tetzlaff, O. Stahl, R. Chini, R. Neuh\"auser, S. B. Popov, T. Pribulla, V. V. Hambaryan

arxiv:1209.2592 v1 · 2012-09-12 · astro-ph.GA · 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{RIO77A2LRFGLZSCB64OJCLJEXQ}

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	2026-05-18T01:54:29.975090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a1dff834b894cbcc841f71c912d24bc35ba0be20feadbca72a9c7c8a2c72534

Aliases

arxiv: 1209.2592 · arxiv_version: 1209.2592v1 · doi: 10.48550/arxiv.1209.2592 · pith_short_12: RIO77A2LRFGL · pith_short_16: RIO77A2LRFGLZSCB · pith_short_8: RIO77A2L

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/RIO77A2LRFGLZSCB64OJCLJEXQ \
  | 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: 8a1dff834b894cbcc841f71c912d24bc35ba0be20feadbca72a9c7c8a2c72534

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53a60adfdabad1d7b10b1aa9bfae8551ca2209b50417c489e1cd2d92ff4c73da",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-09-12T12:47:42Z",
    "title_canon_sha256": "44d19f6d33b1977751fdfdccdfa8eb6185ddd59d5d270f84dbc700a80bc02363"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2592",
    "kind": "arxiv",
    "version": 1
  }
}