Fher Olvera
type: MusicGroup
description: José Fernando Emilio "Fher" Olvera Sierra (born 8 December 1959) is a Mexican musician and songwriter who is the secondary guitarist, composer and lead singer of the rock band Maná.:es:Rock de Mexico
popularity: 14
followers: 197
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ce500f505f4cc00b44844964292f4bd67845e6ed95b3eaca908e93c27dd7175
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60e31890-557c-489b-b7bc-99609be5edd3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60e31890-557c-489b-b7bc-99609be5edd3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/60e31890-557c-489b-b7bc-99609be5edd3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ce500f505f4cc00b44844964292f4bd67845e6ed95b3eaca908e93c27dd7175","name":"Fher Olvera","registered_at":"2026-06-14T14:41:31Z","symbol":"NIM0484772","token_address":"0x9a2c11656982353b4045d32e31383f687f3de10f","type":"artist","uuid":"60e31890-557c-489b-b7bc-99609be5edd3"}
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 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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce500f505f4cc00b44844964292f4bd67845e6ed95b3eaca908e93c27dd7175. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60e31890-557c-489b-b7bc-99609be5edd3.json and https://artists.proofprofile.net/proofs/artist/60e31890-557c-489b-b7bc-99609be5edd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x7ce500f505f4cc00b44844964292f4bd67845e6ed95b3eaca908e93c27dd7175","name":"Fher Olvera","registered_at":"2026-06-14T14:41:31Z","symbol":"NIM0484772","token_address":"0x9a2c11656982353b4045d32e31383f687f3de10f","type":"artist","uuid":"60e31890-557c-489b-b7bc-99609be5edd3"}
track: Corazón Espinado (feat. Fher Olvera & Cindy Blackman Santana) - Live
  type: MusicRecording
  duration: PT4M59S
  duration ms: 299453
  explicit: false
  by artist: Santana
  by artist: Fher Olvera
  by artist: Cindy Blackman Santana
  in album: Corazón - Live From Mexico: Live It To Believe It
    type: MusicAlbum
    date published: 2014-09-05
  genre: classic-rock
  genre: blues-rock
  genre: mexican-classic-rock
  isrc code: USRC11401332
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T06:32:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78470a0b2c29a9afc366ddbeeadd2e951b34f612d6284b76ab19f3a3b3a1bea8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953515
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953515
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USRC11401332
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:53:06Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78470a0b2c29a9afc366ddbeeadd2e951b34f612d6284b76ab19f3a3b3a1bea8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC11401332.
    date published: 2026-06-13T12:53:06Z
  audio: Corazón Espinado (feat. Fher Olvera & Cindy Blackman Santana) - Live
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.32
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.483
    additional property: Energy
      type: PropertyValue
      value: 0.929
    additional property: Speechiness
      type: PropertyValue
      value: 0.078
    additional property: Acousticness
      type: PropertyValue
      value: 0.112
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.975
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.685
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.647
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Minor