Pith Number

pith:RLFO7ODY

pith:2013:RLFO7ODYGHWAERZB3IA2PPPMET

not attested not anchored not stored refs pending

X-ray emission from the Ultramassive Black Hole candidate NGC1277: implications and speculation on its origin

A. C. Fabian, J. M. Miller, J. S. Sanders, M. Haehnelt, M. J. Rees

arxiv:1301.1800 v1 · 2013-01-09 · astro-ph.CO · 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{RLFO7ODYGHWAERZB3IA2PPPMET}

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	2026-05-18T01:52:14.568176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8acaefb87831ec024721da01a7bdec24c9943f190eac7b339978f6f8631eff0f

Aliases

arxiv: 1301.1800 · arxiv_version: 1301.1800v1 · doi: 10.48550/arxiv.1301.1800 · pith_short_12: RLFO7ODYGHWA · pith_short_16: RLFO7ODYGHWAERZB · pith_short_8: RLFO7ODY

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/RLFO7ODYGHWAERZB3IA2PPPMET \
  | 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: 8acaefb87831ec024721da01a7bdec24c9943f190eac7b339978f6f8631eff0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce6876abb23c2c71d5f8523e8e2d2cb36c0ad24afc440d0c108348dcca032c4b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-09T10:20:48Z",
    "title_canon_sha256": "6002d735edb178f05d8457fc168c07f8de8c61bd935f5d28fdd3838128361308"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1800",
    "kind": "arxiv",
    "version": 1
  }
}