Pith Number

pith:CO6IEF4E

pith:2018:CO6IEF4E25V6VPLGTTV5HDGZB3

not attested not anchored not stored refs pending

NGC 7793 P9: An Ultraluminous X-Ray Source Evolved from a Canonical Black Hole X-Ray Binary

A. K. H. Kong, Chin-Ping Hu, C.-Y. Ng, K. L. Li

arxiv:1808.07716 v1 · 2018-08-23 · 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{CO6IEF4E25V6VPLGTTV5HDGZB3}

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	2026-05-18T00:06:36.848805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13bc821784d76beabd669cebd38cd90edc61884a7b0fc4977d8085f22a87911b

Aliases

arxiv: 1808.07716 · arxiv_version: 1808.07716v1 · doi: 10.48550/arxiv.1808.07716 · pith_short_12: CO6IEF4E25V6 · pith_short_16: CO6IEF4E25V6VPLG · pith_short_8: CO6IEF4E

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/CO6IEF4E25V6VPLGTTV5HDGZB3 \
  | 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: 13bc821784d76beabd669cebd38cd90edc61884a7b0fc4977d8085f22a87911b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "422ee5da40c881d170beb5b0f3ea4abbd8313e4abe2a152a91f16e633fd06d2c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-08-23T12:35:51Z",
    "title_canon_sha256": "786cc0b4f96792b9ef8536ef2e26c12cadb24385d3d8fa578e99f964b396bd16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07716",
    "kind": "arxiv",
    "version": 1
  }
}