Andrew Broder
type: MusicGroup
description: Andrew Broder (April 16, 1845 – January 4, 1918) was an Ontario farmer, merchant and political figure. He represented Dundas in the Legislative Assembly of Ontario from 1875 to 1886, and then served i
popularity: 9
followers: 1482
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 0x49f0e6a8a3efaafa99aaa0fb6f53de8362c9c0469a3b4ac03cc109760b01ebff. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05a988d0-a8a0-4f83-85e5-94ae47f00aa8.json and https://artists.proofprofile.net/proofs/artist/05a988d0-a8a0-4f83-85e5-94ae47f00aa8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
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album: Rap Ballads
  type: MusicAlbum
  date published: 2009-12-07
album: Brandished
  type: MusicAlbum
  date published: 2014-02-24
album: Brandished
  type: MusicAlbum
  date published: 2014-02-24
album: Andrew Broder, Crescent Moon
  type: MusicAlbum
  date published: 2015-07-24
album: Wertheimer EP
  type: MusicAlbum
  date published: 2016-10-14
album: Wertheimer EP
  type: MusicAlbum
  date published: 2016-10-14
album: Arena of Dust
  type: MusicAlbum
  date published: 2019-09-23
album: Bloodrush
  type: MusicAlbum
  date published: 2020-10-13
album: Bloodrush
  type: MusicAlbum
  date published: 2020-10-13
  track: Bloodrush
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    duration: PT3M23S
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    by artist: Andrew Broder
    in album: Bloodrush
      type: MusicAlbum
      date published: 2020-10-13
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af25a92b05b19ab9942253f72fd87b7a34396c1c2a03543387aaac3155789f9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBMYF2000107.
      date published: 2026-07-15T17:14:36Z
    audio: Bloodrush
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album: Walk to Detective
  type: MusicAlbum
  date published: 2021-08-26
album: Walk to Detective
  type: MusicAlbum
  date published: 2021-08-26
album: Personal Effects
  type: MusicAlbum
  date published: 2022-03-03
album: Herbert
  type: MusicAlbum
  date published: 2022-08-17
album: Sleeping Car Porters
  type: MusicAlbum
  date published: 2022-09-14
album: Sleeping Car Porters
  type: MusicAlbum
  date published: 2022-09-14
album: THESE SEAS
  type: MusicAlbum
  date published: 2023-01-20
album: The Show Original Soundtrack
  type: MusicAlbum
  date published: 2023-02-03
  track: THESE SEAS
    type: MusicRecording
    duration: PT3M19S
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    by artist: Andrew Broder
    in album: The Show Original Soundtrack
      type: MusicAlbum
      date published: 2023-02-03
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    additional property: OTSVerificationAPI
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    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: THESE SEAS
album: ACCEPTANCE
track: Star Mouth

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMYF2300021

OTSTimestamp
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value: 2026-07-21T00:24:07Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee614aa84ae670ed8ef0d6df88499e592d338d14dc7808103a1b0058024365b2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBMYF2300021.
date published: 2026-07-21T00:24:07Z

THESE SEAS
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additional property: Tempo (BPM)
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additional property: Danceability
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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additional property: Mode Name
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The Show Original Soundtrack
type: MusicAlbum
date published: 2023-02-03

ACCEPTANCE
type: MusicAlbum
date published: 2024-05-30

Star Mouth
type: MusicRecording
duration: PT6M10S
duration ms: 370434
explicit: false
by artist: Justin Vernon
by artist: Ryan Olson
by artist: Andrew Broder
by artist: Psymun
in album: 37d03d MixTape01
  type: MusicAlbum
  date published: 2020-08-21
genre: eau-claire-indie
isrc code: QMB621810001
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additional property: CopyrightStatus
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additional property: OTSTimestamp
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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 0xd14601c86bf160c86e3235998251e3dde8212bc22054defe695621d8aed75715. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMB621810001.
  date published: 2026-07-02T03:55:08Z
audio: Star Mouth
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