Pith Number

pith:M4GPOH27

pith:1995:M4GPOH27NMS5OYZMBFFU6DU5KP

not attested not anchored not stored refs pending

Faint Blue Galaxies as a Probe of the X-ray Background at High Redshift

M.A. Treyer, O. Lahav

arxiv:astro-ph/9509013 v1 · 1995-09-04 · 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{M4GPOH27NMS5OYZMBFFU6DU5KP}

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	2026-05-18T01:40:22.790090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

670cf71f5f6b25d7632c094b4f0e9d53ef6c18214984a5df787da259ae9e48ef

Aliases

arxiv: astro-ph/9509013 · arxiv_version: astro-ph/9509013v1 · doi: 10.48550/arxiv.astro-ph/9509013 · pith_short_12: M4GPOH27NMS5 · pith_short_16: M4GPOH27NMS5OYZM · pith_short_8: M4GPOH27

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/M4GPOH27NMS5OYZMBFFU6DU5KP \
  | 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: 670cf71f5f6b25d7632c094b4f0e9d53ef6c18214984a5df787da259ae9e48ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cd436d7cf12d39b61c8d9653540b53e0b7111164717bc347c7894aae74c68b9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-09-04T15:11:42Z",
    "title_canon_sha256": "8b6226b54a26ac8768b7534be9eafcab99ae426021a6581bfaa28e98592d1882"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9509013",
    "kind": "arxiv",
    "version": 1
  }
}