Pith Number

pith:OH7OTJ3P

pith:2021:OH7OTJ3P4N7OWQYTPZLJW4LGZT

not attested not anchored not stored refs pending

The Complex-Pole Filter Representation (COFRE) for spectral modeling of fNIRS signals

Hugo L. Hammer, Marco A. Pinto Orellana, Peyman Mirtaheri

arxiv:2105.13476 v1 · 2021-05-13 · q-bio.QM · physics.med-ph · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OH7OTJ3P4N7OWQYTPZLJW4LGZT}

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	2026-07-05T02:44:08.387079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71fee9a76fe37eeb43137e569b7166cceae3f970d1d1a293f39a0a674daf3052

Aliases

arxiv: 2105.13476 · arxiv_version: 2105.13476v1 · doi: 10.48550/arxiv.2105.13476 · pith_short_12: OH7OTJ3P4N7O · pith_short_16: OH7OTJ3P4N7OWQYT · pith_short_8: OH7OTJ3P

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/OH7OTJ3P4N7OWQYTPZLJW4LGZT \
  | 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: 71fee9a76fe37eeb43137e569b7166cceae3f970d1d1a293f39a0a674daf3052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b12399d10ac6816cf8f8ccacc83d74874afe7f81084db3bb1cf4260b6a1e7ecd",
    "cross_cats_sorted": [
      "physics.med-ph",
      "stat.ME"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2021-05-13T16:42:00Z",
    "title_canon_sha256": "6c260299b5cd9eb15e3ac7f4c8d60194e724e9e0e700d2610e56889e2c5d5454"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.13476",
    "kind": "arxiv",
    "version": 1
  }
}