Pith Number

pith:AHSLTC6E

pith:2013:AHSLTC6EIVKYHCO3ISDXFD7HJF

not attested not anchored not stored refs pending

New observational Constraints on the Growth of the First Supermassive Black Holes

Chile), E. Treister (U. de Concepcion, K. Schawinski (ETH, M. Volonteri (IAP, Paris), P. Natarajan (Yale), Zurich)

arxiv:1310.2249 v1 · 2013-10-08 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AHSLTC6EIVKYHCO3ISDXFD7HJF}

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	2026-05-18T01:47:07.793614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01e4b98bc445558389db4487728fe7495d1822efba3348ddef609c1c9be4681e

Aliases

arxiv: 1310.2249 · arxiv_version: 1310.2249v1 · doi: 10.48550/arxiv.1310.2249 · pith_short_12: AHSLTC6EIVKY · pith_short_16: AHSLTC6EIVKYHCO3 · pith_short_8: AHSLTC6E

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/AHSLTC6EIVKYHCO3ISDXFD7HJF \
  | 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: 01e4b98bc445558389db4487728fe7495d1822efba3348ddef609c1c9be4681e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8ab2ba7597ae95752d000540511589ce44e907d9170d60e2bd074c522a563c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-08T20:00:07Z",
    "title_canon_sha256": "60b1dde6ffefba38b3f506d716cfdbff25f7a9f1cf866151d36410072fb3eec0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2249",
    "kind": "arxiv",
    "version": 1
  }
}