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 0x1bf01b1dc751b8898b96deb893e2ee27f52784b755bc43f784f7481c61321598. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e212cf96-ae61-41d2-945c-ad88b2e1ab7e.json and https://artists.proofprofile.net/proofs/artist/e212cf96-ae61-41d2-945c-ad88b2e1ab7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yulefest! - Christmas Music & Carols from Trinity College Cambridge
Silent night – Stille Nacht (Arr. Rathbone)
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 0xba711befbe0754323e433d584cac6831e72c12acc4f48268c1da352d86bec6ae. 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/GBAJY1408702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e25168cc9543f58a99ef71152857208e17b9047f42115e8cfe0cb62d6a6723. 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/GBAJY1408715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda05015dd3cceca1433261749208526a4caadfc306b7be46c652b40429dfb09. 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/GBAJY1408720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee8910169212009551422c6e0d1d9d3ecdda19ebd269a57597032cd56a9993. 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/GBAJY1929903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efd780bcdaa2131f2d3a9bb3939b55e05bce118b9fd009925d3911f6952dd42. 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/GBAJY1929904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8926957cc463a43ed4d28051a538009aeb600f603189d958d8fd16fa17171d7c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAJY1929905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e567ed8dc8bf41d5f5b254b3b32ee8f7a8b7981009304a7b8921ce19d5954e9. 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/GBAJY1929906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e769a0191eaaca6dc30af73f9cc94ac7e03aa466e92a24960a3e7064a370d37. 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/GBAJY1929907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4711cd09b248cedcc4b052066ff27475b373d32b32d090ae3734f8b849e950. 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/GBAJY1929909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afa7ab3759ca230ea3df3a31795be7703a0957cbead3db0f6f315505bbb4811. 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/GBAJY1929910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b30f66ef9d7741d11caa5dfc3a082789060e76c82cabbf7fe85b08cf03e1b49. 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/GBAJY1929913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ba9debba1db66808e35052a9e4ee2dd2bdcc21c7b87015894c200bc63cb7d0. 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/GBAJY1929914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55229c306a9ad67a19bb090b7cca528b6401fe8db5fc53c07fdf9f818f5993ba. 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/GBAJY1929917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea892cfd1a8eb98927905eaf512ddf1fea7b7fb8696bee4874cabb2db897361. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAJY1929918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dfde5fc8371582b1e1da84a54015cdae6d75f25f3a973e6db11d12661feae9. 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/GBAJY1929919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceabf9c30fc40d2700e4536a9066a739e5451ad3a6bcabaf987c64810de5d51b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAJY1929921.
A Winter's Light: A Christmas Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91515e65c3ad31981444e9a4557c455ea146bad569a7536c0e46c8fb250aafc5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA560577337.
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": IV. Presto - "O Freunde, nicht diese Töne!" (Ode to Joy) [Excerpt]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029d932b3dec101835bd606928bf4d7414b18290df1de1f9d6efebcb6f8806d3. 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/FRZ110801044.
Mozart: Die Zauberflöte, K. 620: Overture (Adagio - Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a530551ee276b6df1bf9fb25aee294098565bb01757a912cc89c873faa7a61. 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/GBAYC9005497.
Mozart: Symphony No. 40 in G Minor, K. 550: I. Molto allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f91c5fe09c224962eb19d3afa59a70b185359eb9748c5bf4480abb4638b5567. 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/GBAYC9005814.
Mozart: Symphony No. 40 in G Minor, K. 550: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a92c3591cab21b3541c23606ede33ff428d7417b860aa0999477d32284b0ba. 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/GBAYC9005815.
Mozart: Symphony No. 40 in G Minor, K. 550: IV. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7e40ffb2cbaa3e43fe19a66b28215f6673c485cc3e944de8aeebb152cc281. 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/GBAYC9005817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67370c8e0c835fbaec64c89565428766022808f5a941281af8de2b6e4ff3a07. 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/GBAYC9005503.
Lennon / McCartney: The Fool on the Hill (Arr. for Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118bdd7af55dd4c5dd76cb1de774838a157be3520a3bf7ddda01226da250ed7e. 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/GBAYC9502903.
The Swingle Sisters: String Quartet No. 14 (After Mozart's String Quartet No. 40 in G Major, K. 387 "Spring")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad86ccaa12ed13bca8e3eca5d7dd4f3cbfb1d37902370efdc74bfe57ddccad7d. 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/GBAYC9005499.
Mozart: Così fan tutte, K. 588, Act 1 Scene 12: No. 17, Aria "Un'aura amorosa" (Ferrando)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3699e8d00b826813da298af49c3d5d3f031db6d69e7ac1feb5b17ea14f2d4330. 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/GBAYC9005818.
Lennon / McCartney: Blackbird / I Will (Arr. for Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e732304db3742240295b911cf4a7eb5329ab6fb93f896391e7e729eaa310da3. 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/GBAYC9502906.
Bach: Brandenburg Concerto No. 3 in G Major, BWV 1048: I. (without tempo indication)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d40bb805463d49a9d81f02efad38e21c18f5fb61075cce4f8063bad7c36f810. 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/GBAYC9100972.
Mozart: Don Giovanni, K. 527, Act 2 Scene 3: No. 16, Canzonetta "Deh vieni all finestra" (Don Giovanni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f54874dcf8c1fdf2175114eb5c7366e0d8677347a9ecab0e3519dc2edc6f94. 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/GBAYC9007458.
Gershwin / Arr. Rathborne: Porgy and Bess, Act 1: "Summertime"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc97f2049d0bc75a8e3ea77cf043414bec6547b0068e7aa8196bcd3ac7fb5514. 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/GBAYC9502653.
Bach: Orchestral Suite No. 2 in B Minor, BWV 1067: VII. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82fcef786d5f8096fe492b1f591f407ade77a7b4733d30c1e3b38a7b0d1ea51. 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/GBAYC9100974.
Mozart: Requiem in D Minor, K. 626: IV. Offertorium, (a) Hostias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b229e689d366fedd2bba1625deb3cf6ec9a7b99ed9c326e241734e289af2ab. 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/GBAYC9005509.
Mozart: Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cee4f9e7754ee4a81eb6995ed7b51b1b87ffd18c2158fea9ff9fe9189297f3. 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/GBAYC9005502.
Bach: Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a3a5a9559a621c58aef1154be47bc64da0ca308be5b94d1109994c92adfdbc. 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/GBAYC9100981.
Bach, J.S.: Fugue in G Minor, BWV 578, "Little"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4a9bdbe398ceaa2ed77786ec2def1df8c87ddcc56d044cc26aa0b31d825fc4. 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/GBAYC9100982.
Lakmé, Act 1: Dôme épais le jasmin "Flower Duet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7a0edc149068dcd165025864710501d9330aec925aca9e28422a6ca7129aee. 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/GBARU0000054.
Canon in D Major for Strings and Continuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb819c5132eac88d87778dc438f7dd9f5ed8710d69997f7e36b0ad272d68d51d3. 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/GBARU9800148.
Brandenburg Concerto No. 3 in G Major, BWV 1048: I. [...]
Carl Philipp Emanuel Bach Chamber Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054a4d42236a76df879afc1e7c0eab5a420e18c6a0775ee23906ddcb7fff8ee2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USSM10406628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc251b1e30e62d072aaba8867a2cdac737780d53fae0c8e93aed3e8d6e31738a8. 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/USSM17100972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93e7c160af6a9b03250651a82aa45e88fed20254fb7d36eb000f5f3edb91564. 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/GBARL1401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f9bd425b29bb5ff7aed6e37ee1312209981b62a1f2fbf0f9d1c77d57474ad. 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/GBARL0300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b702911c90097b2d653144316f03d43d1f80c5fab41e59a80d8c7a2549264. 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/GBARU9300002.
Variations on an Original Theme, Op. 36 "Enigma": IX (Adagio) "Nimrod"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dba357d2f1a3f3c10f2d5125fc549830bb3d661c6720c21bea5af62ead0b374. 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/GBARU9800716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d50c7d030e8ceb66429a6afdf596757401e40e31536dc9515fff52a0137fd2. 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/DEE471000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9344935db40904220a656e69a775b12b81ed7a8b098aba3bd0c83561605f4ee. 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/GBARL1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ebf2cc5a9a9618c255e04471924a025ee82afdaaa6b418af4e6702991fcc0. 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/GBARU9800839.
I Vow to Thee My Country - Classical Favourites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93e7c160af6a9b03250651a82aa45e88fed20254fb7d36eb000f5f3edb91564. 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/GBARL1401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f9bd425b29bb5ff7aed6e37ee1312209981b62a1f2fbf0f9d1c77d57474ad. 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/GBARL0300318.
Classical Music for a Royal Street Party
God Save the Queen - Classical Favourites
Mary, Queen Of The Universe Shrine Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc74c49d8bfe0658e288bd4601a97ea5f28fb05987f4b2c9a916fddbfbdbeb. 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/USA561253499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c801898c3beef9268a220b65b5e6f3d9afb52d95d3db387a1271665eff7aee. 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/USA561253508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4283412b9c815c24f2a600423153f0ffd66f9013e872e6aa64687a11f7814b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA561253509.
Concert Tour 2018 Poland, Czech Republic, Slovakia
Corona Del Mar High School Madrigal Singers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7222fd0729356e57a31923a6a1de99db9bc8705d9e71a56db7f258bdd5d3f1b1. 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/QM9AA1868184.
The Most Relaxing Bach Album In The World... Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cde8024c0bf6072ea1b601018d9e4237a928b6dc0b744cfeea5f2f687b686d8. 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/USAR29701167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01578c6f3884447b295f8b821eaad7ba5e39faa99a2247531b2ca9d3750c32c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC8400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dab51b252355362997dfd7d0482b3ab1d9b76fbedf8a5f2092fcf9acff672a. 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/GBAYC0103473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878670fd9fe69764663ec5c3180ec0d3be0e191f7c7b31079cbd0ebe21d03c70. 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/GBAYC9902233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcf1ca1e56f098b8982cccac005d6a842ad3ebdd948d26284b1fecb56b1b565. 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/GBAYC0001772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cb17a23b4e187cf03e731c5fadaca758b2f3ef53f72fd4c709b31bb67dcf6. 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/GBAYC8806730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43655153808e5e0fbefa9eeb95406ee59df82afe50f91a0c62e75b7515a0e42. 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/GBAYC8901470.
Prelude No. 1 From Well-Tempered Clavier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b285395f0cc450052e0248779fb1f8aeca6d6f8717cc24860fcf103ee661b. 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/USAR29301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2743c2e59bd3a112b9a4b9bc24974cb8e39abae1cb2e8b4e62bb90a6c8e6788d. 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/GBAYC8805436.
Partita No. 4 En Ré Majeur BWV 828 : V. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e559e3467ffcd368f4e1e83206661655b83f17124e5ece81656029c874e4f9. 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/FRZ119208860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87449bffcdda2dbf76638ece76438584b07e478d9a2b5562c9cfa2d531521ae3. 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/GBAYC8806727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9534c18d1268a740749d52c315560eeb1ab01b43969e3c2efaac8477cf4033. 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/GBAYD0200029.
Cembalo Concerto No. 5 in F Minor, BWV 1056: II. Arioso (Arr. Bunin for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a1bc29693d71a057bcdb623dd2c0d353474f840b90f2cd9da1868af69cf1b6. 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/JPTO09087430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f0b758580c79c2a7c79b25a46ad1668bbadff21dedd9f7ebb14249f29724d7. 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/GBAYC8901875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc214a7a971ad7dbbf86aca6188c4a1ba501a3697f91e918eb9ecae6b135c53. 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/DEC628900706.
O Mensch, bewein' dein' Sünde gross, BWV622
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692b00745cbb3aafa63dd80acf6ab907336bda049e0db3b60aa2991bd384516e. 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/DEC627900754.
Around the World - A Folk Song Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd393e40bfa38bcb74908886a25dc418ce51bdf82d1b65d93bf139c2b8720e005. 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/GBAYC9000702.
Traditional: De Punto y Taco (from Chile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132196fd364f89d6829648f26a934fdfb9547c40915693a1be39d9fd8b6053a0. 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/GBAYC9000705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996d6c1ee29e97981c7656b2f2fd170e2e8aec244df65e5347e29dfe8776a53e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAYC9000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986bb787005e28428e5d72f3e763691db363fcacab25bc8eb229ff17222100ad. 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/GBAYC9000707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f9cd6e4bfe49b48724328c80d970a6210bad8e47746fb9ba63a83fc4ff24e2. 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/GBAYC9000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99b979e2b4f07f908351573b40cd8d4333640491556f2730e569f56be3c8252. 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/GBAYC9000712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c84832ca6428100123997ac78f7d36c04dc87186d7a56b7867a02206983e92. 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/GBAYC9000724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a530551ee276b6df1bf9fb25aee294098565bb01757a912cc89c873faa7a61. 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/GBAYC9005497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f91c5fe09c224962eb19d3afa59a70b185359eb9748c5bf4480abb4638b5567. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAYC9005814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67370c8e0c835fbaec64c89565428766022808f5a941281af8de2b6e4ff3a07. 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/GBAYC9005503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f54874dcf8c1fdf2175114eb5c7366e0d8677347a9ecab0e3519dc2edc6f94. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAYC9007458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b229e689d366fedd2bba1625deb3cf6ec9a7b99ed9c326e241734e289af2ab. 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/GBAYC9005509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cee4f9e7754ee4a81eb6995ed7b51b1b87ffd18c2158fea9ff9fe9189297f3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC9005502.
Sleep, Holy Babe - A Collection of Christmas Lullabies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3cc3299349f7fcbf6c1e0ebe4feca099710a7c2d47f5ca28c1fdc7664ba05. 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/HKI191140701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc2eeb30445e5925a1867a1981e8930e9a2c7675884b2d34bad845d5d3b3ced. 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/HKI191140702.
Men and Angels: 21st Century Choral Works