Pith Number

pith:N7MO7Z3F

pith:2007:N7MO7Z3FR5GNZ65ZENY6SQTBOR

not attested not anchored not stored refs pending

X-Ray Spectral Variability in Initial Rise of XTE J1550-564

C. Z. Liu, T. P. Li, Y. X. Wu

arxiv:astro-ph/0702200 v1 · 2007-02-07 · 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{N7MO7Z3FR5GNZ65ZENY6SQTBOR}

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	2026-05-18T04:29:06.664232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fd8efe7658f4cdcfbb92371e94261744f52c109839dfcb8a62a8b2cb0da5997

Aliases

arxiv: astro-ph/0702200 · arxiv_version: astro-ph/0702200v1 · doi: 10.48550/arxiv.astro-ph/0702200 · pith_short_12: N7MO7Z3FR5GN · pith_short_16: N7MO7Z3FR5GNZ65Z · pith_short_8: N7MO7Z3F

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/N7MO7Z3FR5GNZ65ZENY6SQTBOR \
  | 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: 6fd8efe7658f4cdcfbb92371e94261744f52c109839dfcb8a62a8b2cb0da5997

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0243b124b615123e7e7e3f67321ce770ad69551b65c9fb5e5ce0452d1c4f055",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-02-07T14:49:34Z",
    "title_canon_sha256": "e4789314af5d3fb325feb7cbfcfad45c402fc1e8bdab541b563af85b7bf4b402"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0702200",
    "kind": "arxiv",
    "version": 1
  }
}