Pith Number

pith:IBRZ4GVX

pith:2019:IBRZ4GVXT3MG5HEXDCEJ35RWKI

not attested not anchored not stored refs pending

Constraining the Active Galactic Nucleus and Starburst Properties of the IR-luminous Quasar Host Galaxy APM 08279+5255 at Redshift 4 with SOFIA

2), (2) Flatiron Institute, (3) UT Austin, (4) Johns Hopkins, 5), (5) NASA Goddard, (6) CfA, (7) NASA JPL), Attila Kovacs (6), Caitlin M. Casey (3), C. Darren Dowell (7) ((1) Cornell, Christopher C. Hayward (2), Johannes Staguhn (4, T. K. Daisy Leung (1

arxiv:1903.09153 v1 · 2019-03-21 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IBRZ4GVXT3MG5HEXDCEJ35RWKI}

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	2026-05-17T23:46:52.629433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40639e1ab79ed86e9c9718889df6365224208c9e62bc1fcafa7a31a1c9afacca

Aliases

arxiv: 1903.09153 · arxiv_version: 1903.09153v1 · doi: 10.48550/arxiv.1903.09153 · pith_short_12: IBRZ4GVXT3MG · pith_short_16: IBRZ4GVXT3MG5HEX · pith_short_8: IBRZ4GVX

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/IBRZ4GVXT3MG5HEXDCEJ35RWKI \
  | 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: 40639e1ab79ed86e9c9718889df6365224208c9e62bc1fcafa7a31a1c9afacca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56de3db6109cd558a6c00bcc151695a5658a8a7b3de97c57de1bc8129c7fef59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-21T18:00:00Z",
    "title_canon_sha256": "9550381626b1600a1b01f2e8e81e7b36b1780da1ec1418594c1e2360759c4c1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.09153",
    "kind": "arxiv",
    "version": 1
  }
}