right|210px|Adler in 1966|alt=|border Kurt Herbert Adler (April 2, 1905 – February 9, 1988) was an Austrian–American conductor and opera house director. Biography Adler was born in Vienna, Austria, t
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 0xf47afb86ad0769922db399a85613bf01e564abffab4cc08eecdc193ce87501d7. 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/50e46e45-43be-4ba0-a291-4a9d925a719e.json and https://artists.proofprofile.net/proofs/artist/50e46e45-43be-4ba0-a291-4a9d925a719e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x392e00411de2f82821719a0e09ae3b855a48776b5e71cad307f69fc2df5eca4b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBF077630601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3d4697cb2163ca766a47de08df060e240cdb03a76f3c09c3a21c9978a0a78. 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/GBF077630602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d743bc07161825d6f3e0f8babdd3ff83aa1613c1ae4947fce72c01bd59c2af. 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/GBF077630603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f61dce7ab47d99e88f7b8341b7ae689915a96c7532182f3c6e665dc10bdef7. 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/GBF077630605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ab24208de6a75ecbdd5106162ecc593037ce133faf0a77b69cc93cef19f93. 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/GBF077630607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe439ae254fadadbcfcb6b5864f012b12d449592ebd8f4ed87f4f57caae242dcd. 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/GBF077630608.
Agnus Dei (Arr. Guiraud After Intermezzo from L'Arlésienne, WD 28)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bffade868c5475212523f78c238e075ad6b23f97716a5812f37716070068e7. 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/GBF077630609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac371834a1dc3ba2a34437101db5ded5436d8894353c23ee8a6baaa79f6bf04. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBF077630611.
Grosse Sänger unseres Jahrhunderts: Inge Borkh
Beethoven: Violin Concerto in D Major, Op. 61 - Mozart: Violin Concerto No. 5 in A Major, K. 219 "Turkish"
Warenskjold, Dorothy: Songs From Early Radio and Television
Luciano Pavarotti - Gala Concert, Royal Albert Hall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f61dce7ab47d99e88f7b8341b7ae689915a96c7532182f3c6e665dc10bdef7. 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/GBF077630605.
Panis angelicus, CFF 209 (Re-Orch. Gamley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d743bc07161825d6f3e0f8babdd3ff83aa1613c1ae4947fce72c01bd59c2af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBF077630603.
Cantique de Noël "O Holy Night / Minuit, chrétiens" (Orch. Gamley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e00411de2f82821719a0e09ae3b855a48776b5e71cad307f69fc2df5eca4b. 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/GBF077630601.
The Three Tenors - In Concert, Rome 1990 (And Selected Highlights)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f61dce7ab47d99e88f7b8341b7ae689915a96c7532182f3c6e665dc10bdef7. 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/GBF077630605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259ab24208de6a75ecbdd5106162ecc593037ce133faf0a77b69cc93cef19f93. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBF077630607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e00411de2f82821719a0e09ae3b855a48776b5e71cad307f69fc2df5eca4b. 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/GBF077630601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba3d4697cb2163ca766a47de08df060e240cdb03a76f3c09c3a21c9978a0a78. 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/GBF077630602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac371834a1dc3ba2a34437101db5ded5436d8894353c23ee8a6baaa79f6bf04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBF077630611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe439ae254fadadbcfcb6b5864f012b12d449592ebd8f4ed87f4f57caae242dcd. 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/GBF077630608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bffade868c5475212523f78c238e075ad6b23f97716a5812f37716070068e7. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBF077630609.
Requiem, Op. 5 (Grande Messe des Morts): 9. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab79d8cdde4c19179b4f19f9eff6ae3cf8849526f0445953c960933e571f4004. 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/GBF077630610.