Pith Number

pith:TTQUPI3R

pith:1997:TTQUPI3RLUEOEURCTMCHATROPW

not attested not anchored not stored refs pending

The Torque and X-Ray Flux Changes of OAO 1657-415

A.Baykal

arxiv:astro-ph/9704080 v1 · 1997-04-10 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TTQUPI3RLUEOEURCTMCHATROPW}

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	2026-05-18T01:07:38.500409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ce147a3715d08e252229b04704e2e7d9ea494f276203f97ff3713f023a54ee7

Aliases

arxiv: astro-ph/9704080 · arxiv_version: astro-ph/9704080v1 · doi: 10.48550/arxiv.astro-ph/9704080 · pith_short_12: TTQUPI3RLUEO · pith_short_16: TTQUPI3RLUEOEURC · pith_short_8: TTQUPI3R

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/TTQUPI3RLUEOEURCTMCHATROPW \
  | 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: 9ce147a3715d08e252229b04704e2e7d9ea494f276203f97ff3713f023a54ee7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15c4fd5e1a61dfaee8a8f4e903dad4af61b62016c51125382ed6bf6f7eaaf634",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-10T10:34:30Z",
    "title_canon_sha256": "4ac2292368ba2c6962cabb572fe25966ce240547badf3e0346173abef2cd29cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704080",
    "kind": "arxiv",
    "version": 1
  }
}