Donald John Sebesky (December 10, 1937 – April 29, 2023) was an American composer, arranger, conductor, and jazz trombonist. He was a multi-instrumentalist and could play a number of other instruments
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 0x9d88a7cf86f1b79ee1e9a8d91c8895687c89745ce973a6a706a1ae6c56898530. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78ff6484-4275-45c7-9268-2ac2baf6b50f.json and https://artists.proofprofile.net/proofs/artist/78ff6484-4275-45c7-9268-2ac2baf6b50f.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 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 0xc81bbfebfc785ff9a727dafd3e55a9d175ad6a63a4573db66efc15f29ce16dc3. 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/ES5109600441.
Three Works For Jazz Soloists & Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4c543c8d85175c72997b97be90d9cd0efee9aa0ea0e6bcd75d8a3abe9da998. 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/USRC19807337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba40a883b95b94a976ae0b85fc25686a775e56c99052fac2426b19583c6b5e2. 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/USRC19807340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d93744b72502e642249850859a3591b94acb84c92aa65f782b02988ca39251. 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/USRC19807339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073341c44395c37123964bd5eb954982085e66aa7e11c493ced807540ee0dd2. 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/USRC19807338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edabb5cfddf996d1d4418600d39240bb955f0067b42d220f56b305a0ed22318. 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/USRC19807346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd022529811aee0f72bcc8afba11a145af4b2c3b8dba2a6ffaf72dd1f3c1e1. 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/USRC19807342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3afe5aa304610ae98ed0aec6cf2db44571c384b1db99ad71907715209020656. 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/USRC19807341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24c7fcc3b49e4f6e7034fb8980a0bef9c9f1f93d109fe4e255fd8ea58d42d51. 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/USRC19807344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a383cbe9fc8d628cc89b603a57de83593df6af087862d9e35a37390493c394e. 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/USRC19807343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc264815741c44016eb64dbc6e6b9e949ed8b8e975f6276a488e0833454024c78. 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/USRC19807347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73571976a577ae477d5c1252f67eed962d0018e6356a8cd3f56a7cfcdc9bb5ea. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USRC19807348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2a7eb280ad2433fac82e0bd4ee21056918e02c98fb4031f081ccd4bbe37db0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZR8K2321010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4a0192107a614295e084a9e99a2742333a8afc31052ed6e7f4cf3bd07e8499. 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/GBF076825870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e382ec1395be703f619368fab7daf79a8a54fa83b75ab6aeebcb99b7f5af66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USPR37330003.
CTI Records: The Cool Revolution; A 40th Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048e626f7913c4a335bbb1d75e9ca0656be1908575777c98b814d9474a0676f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USKO10501550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb02e30df485d181ada9d2a78f0562e92f657635f640138f4238e73d8a70f63. 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/USSM10110658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d536110296c22e7e9d6ef2069b3a85a33a1d0e8166dfc8f8bb1351e7956d1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USMO17582656.
Sun Devil Marching Band Pass In Review 1998
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99facd708da7cddad159f1971d6ebbecafc317ca7c449799bd8c4362ecd9648. 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/QMZ621100883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff4ea26bef6fae85cfa7ec927823113557997b4efa421287c951883fbb8d364. 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/QMZ621100893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431435b0292adc8fdf3b4e33b59d3621b7c19d4adeab7afcb2dd1dbeff6bd659. 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/USRC19603952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1cc3eec4f34eb150e2e3d1af44a5414fe5fb120f82292bff07e836b1a289cb. 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/USRC19603961.
Crate Diggers, Vol. 1: Stone Cold Rare Beats & Vinyl Oddities 1965-1978
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adf2612e422c455961b61fa22630cf841e1411325ea567d1f22a98bf48090dc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEUM70709918.
Jazz District - Best Of CTI (KulturSPIEGEL)