Matthew Gee (November 25, 1925 in Houston, Texas – July 18, 1979 in New York City) was an American bebop trombonist. Gee played trumpet and baritone as a child, and took up the trombone at age 11. Af
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 0x0054130b8a6fd28897b89de8bee3081073c683ac04e6d0f0e8d697b16ad6ab00. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a2fd975-2b7f-4c4e-b6bc-876fcfb4f773.json and https://artists.proofprofile.net/proofs/artist/4a2fd975-2b7f-4c4e-b6bc-876fcfb4f773.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 0xf7c8554f8af72f2cf9bb75eb4516baad86ffa75c11051a8199d21f62cacca5d0. 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/USAT20502035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae5f825e2ebe321cf33595e5e646cce70d847efb20485e8ef053bdb8f26394. 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/USAT20502036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567e027c00f3065f5b3991bcbf2be23d9e3da37bcca9a639ec92b8559d26bdae. 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/USAT20104253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f7c8b1301bb6387ef481563ab64280a97b013421d2736bffdd97b2e444ce9. 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/USAT20108979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa1bd503157beb03568d5a9119fb519db79e5f4c323594a88cd650e4ba1a5d5. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USAT20106525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46da68591ab3e19a75c245422cbf89bd0a25ae3866a9d41636a118c99b122531. 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/USAT20105941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04f4370e72e07e4db970386ff7fb18a879bb832afc58469aea15cee9e13c8e8. 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/USAT20106479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02c9c73e4146c560932fbe78b188afedfb2f89f5c7c7aadf5f3f90940297118. 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/USAT20202157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0c14db4208267a50d0851310ae67a48dd0518f24faa944d70c9fe34aeb93a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USAT20402914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde9c6ddd3f5dc7f9814536ef56fadddffe95f075fb8282bcb3e37e86d0a9c1b. 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/USAT20200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f40c783ff9271db5b2e59c9a0c0070fde78a67c7539f9c90b58d9bf3161b66. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USAT20105539.
Trombone Travels, Vol. 2: Songs of Travel
Milestones of Jazz Legends - Male Jazz Singers, Vol. 2 (1950-1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8823495f2b59a167f19ab5a2c36e2e134e91ca9695fef43e9c17b145524de91. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEU241107670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3332bbcc3c91a096bce42070ecc0f6fcebf5fc567744d5c42fe5076b7dd8da. 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/DEU241107629.