Claus Ogerman (born Klaus Ogermann; 29 April 1930 – 8 March 2016) was a German arranger, conductor, and composer best known for his work with Billie Holiday, Antonio Carlos Jobim, Frank Sinatra, Bill
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6d445a243cd19bd0d4761429a3ee9eb98362e2068c3e397480624b9210bccf. 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/6824f606-8d2a-4743-8982-20610aadab82.json and https://artists.proofprofile.net/proofs/artist/6824f606-8d2a-4743-8982-20610aadab82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cinematic Cool, Vol. 7 - Hollywood Soundscapes
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 0xbed11a209376bcd3b181442872b89a202f3742bc2736a0345eed56999eeccfbf. 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/USWB10104976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c98c8dd1f5459434996d9b89bc3e8e679bf2c9b847f8d9e207ce00b061ee371. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/PLA161412714.
Orquestra Sinfônica do Estado de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eff33082dd8098434d7dfe940cec54bec4231c845fec7205d34fec7ac78646. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA61497055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb63a38715f9e93847a1f4597828db2ed912e0317377974e49ba55bde317976. 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/QM6P41505699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746ae27ff0a50087532a7433eccfef8441849e226c601e3b263b6195748f2b24. 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/QM6P41505700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c436f73a85d3145ee6bf76aafeeb21ce51f79fd7e3e58308472959c68a8a02. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMDA61497058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19bbc1dcb11244f83197f269304c52b998474fb73bfbbcaba39f0f830542b92. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QM6P41505701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a03a0255cfff520799131d8ae4d985c614ea317b7c06d3e0617d4e8fa19c5fd. 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/QMDA61497060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6db42d94e3f4fb515d7789a159430e040318fc72c6e3fe325c813d5fe99ab4. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QMDA61497061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8c8f2d28274b1b8360b4c6c2977f163ae85777d620411136b07638a26769b9. 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/QMDA61497062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcd71153f28b58d1a9e7c1ba33adc1fc8685294082ec36686323495bb753184. 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/QMDA61497063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa061bae1f930bfb2e226c60bff0044ac881ccd6dfca6c8792d059ab9f8585c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA61497064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde82b1a08acde905740bff1edf2e292d5184d785ae7c0f535db55dec0729f4d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMDA61497065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5af04cb65b88c008fd3d2371593543123f1359faffe8fe1edbebf2984a351f. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QMDA61497066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e213f972574cacda868948f42234762287dd8e0464b151a12bc703bb5953e3a. 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/QMDA61497067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2d5ef5f04d84f463675eb56a4129c35b9506ef19a51ccd8c78addda327635e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QMDA61497068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc74bddfc337c909fe452855731016c712a0953f7e8eb87d961170253af3f5. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QMDA61497069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f5bc8ec892a7cc9fd2f74b2daa85c9e123d461b9040bbc561d2a794adc2994. 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/QMDA61497070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930a29978bc2eaa0cf2a10dc82000226d55bf8fbe526443f6ab8c18da6b704e. 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/QMDA61497071.