Pith Number

pith:ZHA7TCYK

pith:1997:ZHA7TCYKZXXSTCC74ITLBVDSQQ

not attested not anchored not stored refs pending

Properties Of The Hard X-ray Radiation From The Black Hole Candidates: Cygnus X-1 And 1E1740.7-2942

A.Dyachkov, A.Goldwurm, E.Churazov, E.Jourdain, I.Chulkov, I.Korel, J.Ballet, J.P.Roques, L.Bouchet, M.Gilfanov, M.Vargas, N.Khavenson, P.Laurent, R.Sunyaev, S.Kuznetsov, V.Borrel

arxiv:astro-ph/9708270 v1 · 1997-08-29 · 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{ZHA7TCYKZXXSTCC74ITLBVDSQQ}

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	2026-05-18T01:40:16.775768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9c1f98b0acdef29885fe226b0d47284041cdbe1c0c3ff445d0204277226d95e

Aliases

arxiv: astro-ph/9708270 · arxiv_version: astro-ph/9708270v1 · doi: 10.48550/arxiv.astro-ph/9708270 · pith_short_12: ZHA7TCYKZXXS · pith_short_16: ZHA7TCYKZXXSTCC7 · pith_short_8: ZHA7TCYK

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/ZHA7TCYKZXXSTCC74ITLBVDSQQ \
  | 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: c9c1f98b0acdef29885fe226b0d47284041cdbe1c0c3ff445d0204277226d95e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b3cf10681da016aed837dd6f96a16f5f5592ff8c3e195624983c4305a025bd1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-08-29T11:49:47Z",
    "title_canon_sha256": "032fb358c00f428fdc16dd8a50b6975aa8fbfd608743c0f3ff04dbe4b21c73c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9708270",
    "kind": "arxiv",
    "version": 1
  }
}