Halma
type: MusicGroup
description: Halma (from , meaning “leap"atlas.perseus.tufts.edu https://atlas.perseus.tufts.edu/dictionaries/entry/urn:cite2:scaife-viewer:dictionary-entries.atlas_v1:cambridge-greek-lexicon-3625/) is a strategy
popularity: 2
followers: 425
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1867bb4076647dd2a9e6270822aa5017724aef29fa37e93cff9944a912c0d5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6361613e-b61f-4868-98a9-bfcbf6544fb5.json and https://artists.proofprofile.net/proofs/artist/6361613e-b61f-4868-98a9-bfcbf6544fb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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  type: MusicAlbum
  date published: 2025-06-14
track: A Fantástica Fabrica de Plug
  type: MusicRecording
  duration: PT2M20S
  duration ms: 140846
  explicit: false
  by artist: Irala
  by artist: Halma
  in album: Factory Mixtape
    type: MusicAlbum
    date published: 2022-04-07
  genre: speed-plug-brasileiro
  isrc code: QZHZ42202424
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ42202424
  additional property: OTSTimestamp
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    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408009155ca5b36a6f981e7b64355fb36c651cdc61e3029152b2405b8a6530c3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ42202424.
    date published: 2026-07-08T03:22:41Z
  audio: A Fantástica Fabrica de Plug
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    additional property: Danceability
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.62
    additional property: Loudness (dB)
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    additional property: Key Name
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      value: G
    additional property: Mode Name
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      value: Minor