McShann at the Edinburgh Jazz Festival, c. 1995|thumb|right James Columbus "Jay" McShann (January 12, 1916 – December 7, 2006) was an American jazz pianist, vocalist, composer, and bandleader. He led
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 0x75b059ad8fad5e603890d5110f3656859b37d1cd194955cc0fbe017446dd5f2b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d341ed0d-e00f-4b6b-bcd4-29836d216797.json and https://artists.proofprofile.net/proofs/artist/d341ed0d-e00f-4b6b-bcd4-29836d216797.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 0x1a5b9cc8863a80290f16843981c185e1d06ecdfe9c8dc015b891192d9ee824bc. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEXO52493990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2652ee0ecd758395e74fb3ac7f744df610968bde3b752c84008e96f683eb8ec. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEXO52493991.
Confessin The Blues (The Definitive Black & Blue Sessions) [Paris, France 1969]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacded27e1768cb3657a0f737e50b70b1e7f111f3721f421f08449849b90b08e5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR6V86900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da44613029406bd27e78d5c517948c189e87bb776faa2b6e71d21244f704f4. 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/FR6V86900137.
Kansas City Memories (1970-1973) [The Definitive Black & Blue Sessions]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae872320ec14401e9676908c069c39911d482087c068a23af1dbbf1c2baa292b. 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/FR6V87300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d03b68a59fe6a1916878c3af07aec902ea7e2d4db13a08b2f2a242aea7eb5e5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM80974483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9866c9b42ac8cb7292b9357bd676a8a6bcfbad2e6abd5d1e21c2c2718deb6936. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US4B99603507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed5eef526c1c2028b2cb8eef66574af1c2f317afd67d7f0ab2e86a25710dd10. 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/USAT20202148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02383a75c1f38c0362b01ca0405463a4adcbffc222e6718efb8cb98084a85b3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USAT20202107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4091c1999941a4399c6408aa366f6de17a1b380df9843c11928557dbdc36f327. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USAT20004081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8e89053e624608949e287877fa53c0f6d0dd1f89fadb4a6e03f3472d42701e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USAT20501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f09ce60b4490cc33afd74934dae057da457b8edbb869057de3a402a5f4c550. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USAT20502999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d249b928893bcb8e915285fc510dad12cbcc1d8254bdd0f1a12065c00edff04. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USAT20004080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bdac99c21e7ea7ed151deb95b15f712b7c3542bc527aa42e98a5d75a665f92. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USAT20503000.
Jay McShann: Kansas City Bounce 1940-1949 (Jazz Archives No. 187)
Jay McShann and The Blues Singers 1941-1949 (Blues Collection Historic Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e8696aa762a9c5e7ba01bcf9e34594351275dda89f0236aa477b8c8b68b697. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR6V80935686.
Two of a Kind: Jay McShann & Erskine Hawkins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8b53fe201a8022f2f58d0c50092b935c38ecfb9352d08630af2cbe7cc414f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUXN22485803.
Essential Classics, Vol. 975: Jay McShann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed5eef526c1c2028b2cb8eef66574af1c2f317afd67d7f0ab2e86a25710dd10. 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/USAT20202148.