Gero
type: MusicGroup
genre: anime
description: thumb|right|200px|14th-century wall painting depicting Gero in the church he founded at Gernrode Gero I ( 900 – 20 May 965), sometimes called the Great (),Thompson, 486. Also see Lexikon des Mittelal
popularity: 19
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/953783
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d651a0ef-dbe7-48e7-a629-a61dfc14cda2.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-15T12:24:43Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507a80a38fee4d078b86b0c2cb68a7eb6ee7d8fad1b52823f058b99dedb9975b. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d651a0ef-dbe7-48e7-a629-a61dfc14cda2.json and https://artists.proofprofile.net/proofs/artist/d651a0ef-dbe7-48e7-a629-a61dfc14cda2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:24:43Z
album: pure
  type: MusicAlbum
  date published: 2012-01-20
album: Braunschweiger Eintracht - Du bist mein Verein
  type: MusicAlbum
  date published: 2012-02-17
album: TVアニメ「臨死!! 江古田ちゃん」エンディングテーマ曲・第5話
  type: MusicAlbum
  date published: 2019-03-20
album: TV Anime "Rinshi!! Ekoda-chan" Ending Theme Song, Episode 5
  type: MusicAlbum
  date published: 2019-06-07
album: Lovely day
  type: MusicAlbum
  date published: 2024-06-11
album: If you could read my mind
  type: MusicAlbum
  date published: 2024-08-14
track: 金曜日のおはよう -love story-
  type: MusicRecording
  duration: PT3M59S
  duration ms: 239533
  explicit: false
  by artist: HoneyWorks
  by artist: sana
  by artist: Gero
  in album: 好きになるその瞬間を。
    type: MusicAlbum
    date published: 2015-07-15
  isrc code: JPX401500061
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    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:47:07Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017913d6abe22d91f68773a85368cf3a62f3a4bb2060640c644e80991dfd8321. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPX401500061.
    date published: 2026-06-13T12:47:07Z
  audio: 金曜日のおはよう -love story-
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152.03
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.396
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 金曜日のおはよう -love story-
  type: MusicRecording
  duration: PT3M59S
  duration ms: 239533
  explicit: false
  by artist: HoneyWorks
  by artist: sana
  by artist: Gero
  in album: ハニワ10セレクション ～恋のすごろく編～
    type: MusicAlbum
    date published: 2025-02-26
  isrc code: JPX401500061
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017913d6abe22d91f68773a85368cf3a62f3a4bb2060640c644e80991dfd8321. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPX401500061.
    date published: 2026-07-02T03:30:09Z
  audio: 金曜日のおはよう -love story-
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.574
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Energy
type: PropertyValue
value: 0.925

Speechiness
type: PropertyValue
value: 0.113

Acousticness
type: PropertyValue
value: 0.014

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.044

Valence (Positivity)
type: PropertyValue
value: 0.732

Loudness (dB)
type: PropertyValue
value: -7.791

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major