Pith Number

pith:U2S2OFQ3

pith:2015:U2S2OFQ3PMLOK2KNL2TRYTLUPN

not attested not anchored not stored refs pending

Exploring Photometric Redshifts as an Optimization Problem: An Ensemble MCMC and Simulated Annealing-Driven Template-Fitting Approach

Charles L. Steinhardt, Daniel C. Masters, Daniel J. Eisenstein, Joshua S. Speagle, Peter L. Capak

arxiv:1508.02484 v1 · 2015-08-11 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2S2OFQ3PMLOK2KNL2TRYTLUPN}

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	2026-05-18T01:10:10.236768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6a5a7161b7b16e5694d5ea71c4d747b78c3400d6f828126eb05e9fe70918f75

Aliases

arxiv: 1508.02484 · arxiv_version: 1508.02484v1 · doi: 10.48550/arxiv.1508.02484 · pith_short_12: U2S2OFQ3PMLO · pith_short_16: U2S2OFQ3PMLOK2KN · pith_short_8: U2S2OFQ3

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/U2S2OFQ3PMLOK2KNL2TRYTLUPN \
  | 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: a6a5a7161b7b16e5694d5ea71c4d747b78c3400d6f828126eb05e9fe70918f75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ba6ec388dd92a5f5aeb509bbba2f7ed0bc69a5a7e9641a38e8f90f1034fe524",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-11T04:17:54Z",
    "title_canon_sha256": "145fb777782b5e9a05a95210ac7841ba16d8b603f35a4f01b9d4226af7140a67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.02484",
    "kind": "arxiv",
    "version": 1
  }
}