James Friskin (3 March 1886 – 16 March 1967) was a Scottish-born pianist, composer and music teacher who relocated to the United States in 1914. Biography Friskin studied in Glasgow with local orga
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd02e106a5f294e1a46883106e06c8b16d0c148fd358d1ac66baccc4977b861c. 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/67fab09e-acd6-4cb8-8289-f999e51ff18d.json and https://artists.proofprofile.net/proofs/artist/67fab09e-acd6-4cb8-8289-f999e51ff18d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Transcribed in the Light of Harpsichord Technique (Bach's "Chromatic Fantasy & Fugue"), for piano: i. Chromatic Fantasia (BWV903)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eca17d88524cbf7fbf821cca904587350d9836f2b13eecdf08a743137ebf0e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKO11300829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ad65b93b0757370a2a7045956ad5c2416445c29221444ae6b8afe8ab3fa028. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USKO11300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8bced3a442008d8ae36594355b1af7c26e40c1d8fdefa4af1a9587cae43b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKO11300833.
Transcribed in the Light of Harpsichord Technique (Bach's "Chromatic Fantasy & Fugue"), for piano: ii. Fugue (BWV948)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6d3645da811ffd2994c99bae7b144aedf676e84371c5b0de154f8d3715849b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKO11300830.
Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: v. Allegro poco: Aria di Postiglione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7036ed55723487e921c05e07c417c97d036aa59b15ac89b55e9f87a4f0959c94. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKO11300838.
French Suite No. 3 in B Minor BWV814: ii. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf379626ddb06ca774820ba898daf009a38d9568274ded88da152c72ebeaffa6d. 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/USKO11300843.
Sonatina, from Cantata No. 106 "Gottes Zeit ist die allerbeste Zeit (Trinity), BWV106," arr. Friskin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc511ffe65441435549323b88b95ea0e5583ad10ff34f5c02a1d85e598ac61fe9. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USKO11300840.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9e98e7384fb894665b25b60d5cca4520c3dd30bf1af30dd8b24a8397bde0a8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USKO11300831.
Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: i. Arioso (Adagio): Ist eine Schmeichelung der Freunde, um denselben von seiner Reise abzuhalten (His friends t
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9febf1eeb2e16380b702c6731c77a36abce57139ad7fbd69ef6e36e884cd31d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USKO11300834.
Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: iii. Adagiosissimo: Ist ein allgemeines Lamento der Freunde (The general lament of his friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876356b5ade5c936dbc57c1259232526840ebef6243afb1c2e777397b032861. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USKO11300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd40c96eda185def00b1927925ddeba73798d18b20e27c57da4e02c5edd2c3c. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USKO11300841.
Capriccio on the Departing of his Most Beloved Brother in B-flat Major, BWV992: ii. Andante: Ist eine Vorstellung unterschiedlicher Casuum, die ihm in der Fremde konnten vorfallen (They tell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df7ac10eb6fa2a9e3ed348bf8f9afd712c5995039761da370996e24e67cc27e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USKO11300835.
French Suite No. 3 in B Minor BWV814: i. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ce4dc01a4d444780d12dc734355a01ef0e7f83886772ed8c004f003ebd3c53. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USKO11300842.
French Suite No. 3 in B Minor BWV814: iii. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b42e5d32dea5c4486870b79b033be95d9f653fc2358cf3df119e4d66351184. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USKO11300844.