Sir Simon Keenlyside (born 3 August 1959) is a British baritone who has performed in operas and concerts since the mid-1980s. Biography Early life and education Keenlyside was born in London, the s
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 0x2fa9c92785e0f37296c495b2e20f5323d4cfbc231bc6961b5d016bcc16bc2488. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ec4e9b8-b1de-460a-9154-1494f59921eb.json and https://artists.proofprofile.net/proofs/artist/2ec4e9b8-b1de-460a-9154-1494f59921eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vaughan Williams: On Wenlock Edge / Five Mystical Songs (English Song, Vol. 3)
La Bohème / Act 2: "Aranci, ninnoli! Caldi i marroni e caramelle"
Coro Voci Bianche Del Teatro Alla E Del Conservatorio G. Verdi
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 0x8520952cc911bcb04f457265461777ec88071dc09a72a7f3f266311d7393e2f2. 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/GBF079841011.
La Bohème / Act 2: "Chi guardi?" - Extract
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33aa1bd3f0b1071f3fd3d75d55a064a440f3f1166c6c8d703c6e8f10487cc7. 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/GBBBA9850210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e51d256174f2245fb0b89104fa2968b9a3612647d311259e818ac9ddf156346. 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/GBF079841019.
La Bohème / Act 2: "Chi l'ha richiesto?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3538466a10b6a392cb63ec09ad724d8f33ecc601d6a733a519058449f15d8a. 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/GBF079841016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531db0a24ebc4cdd365c71c570b1f28d624164a6b208778af2399d9aaec47fc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF079841025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d5cf3958f107176e227ae7c1cdf2409cc634ff4f748e0767636a421a59a791. 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/GBF079841031.
Il barbiere di Siviglia: Largo al factotum
Ich mag keine Klassik, aber das gefällt mir!, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d03c34a881debba64c07a267c375785bfed930f8f2eae67e293a708e525b3cc. 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/DEE860600689.
Gounod: Roméo et Juliette, Act 3: "Allons ! Tu ne me connais pas Tybalt" (Roméo, Tybalt, Mercutio, Chœur, Stéphano, Benvolio, Pâris, Gregorio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012f3e067575251877109fcdc645547ef61d6efa62e856f245a426db9184e66a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBAYC9500068.
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 0xde67d2359976efefef38cc69b6cf4688e477ef73be4bc556e6ac5c33c0bc65ee. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBF079841010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7882d4e3595b55cc971d2737aeeed0ecae375ec4e339818478b4e350d50b0493. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBF079841001.
Fauré: Requiem, Op. 48: IV. Pie Jesu (1893 Version)
The Most Peaceful Classical Album in the World...Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde340f457d6148dfe35ccc926db629f8259905cd93a1b6f07ee6f4b0af398050. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC9600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea92217c06050f8f8ace508229c6bbadd03f4af4d22c61413939f4af1b1288c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF079841015.
La Bohème / Act 3: "Mimì è tanto malata!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788a4f3646fc463edb3c758e3c7319be2046433a92a42c8f52bf8671f779f864. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBF079841022.
La Bohème / Act 3: "Dunque è propio finita!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0508345c3e6d6f045befd355a1169dc1c70d7b8c758193554f0187aec6ce14f3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBF079841024.
La Bohème / Act 4: "O Mimì, tu più non torni" - Extract
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3ebeebd3d54eea1545850636b1b1d419d67d1de7a24fb77fb8d828bf9d4c2c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBBBA9850200.