Pith Number

pith:K74ZG3IV

pith:1999:K74ZG3IVP654PO73KJGEFCZQVG

not attested not anchored not stored refs pending

High Resolution Infrared Imaging of the Compact Nuclear Source in NGC4258

A. S. Evans, E. E. Becklin, G. Neugebauer, K. Matthews, M. E. Ressler, N. Z. Scoville, R. Chary

arxiv:astro-ph/9910557 v1 · 1999-11-01 · 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{K74ZG3IVP654PO73KJGEFCZQVG}

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	2026-07-04T16:11:45.755897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57f9936d157fbbc7bbfb524c428b30a98b5bcf2d0549d9d3fb796da428c35a40

Aliases

arxiv: astro-ph/9910557 · arxiv_version: astro-ph/9910557v1 · doi: 10.48550/arxiv.astro-ph/9910557 · pith_short_12: K74ZG3IVP654 · pith_short_16: K74ZG3IVP654PO73 · pith_short_8: K74ZG3IV

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/K74ZG3IVP654PO73KJGEFCZQVG \
  | 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: 57f9936d157fbbc7bbfb524c428b30a98b5bcf2d0549d9d3fb796da428c35a40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5a6a1a7a209f4f36497bff5729b703b80ec0dd063d3125d8f784704b3169da8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-01T03:32:23Z",
    "title_canon_sha256": "80d78e5be646e6fec2ad532c29097a652e954361198d8e0212f03aaa491e9166"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9910557",
    "kind": "arxiv",
    "version": 1
  }
}