Gary Bartz (born September 26, 1940) is an American jazz saxophonist. He has won two Grammy Awards. Biography thumb|left|upright|Bartz at the Kuumbwa Jazz Center, Santa Cruz, California, July 2017 B
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 0xbcc4b591615d204e0f8cd9fd0c4691f239837acf5b84bb71c99309c84bafffee. 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/e470951d-7c62-44b1-ac4f-94989a41fd3e.json and https://artists.proofprofile.net/proofs/artist/e470951d-7c62-44b1-ac4f-94989a41fd3e.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 0x3e8292c3af8bea8851c85468bdf1f8dde72ffdb9731a66e9def4fe4f3df003c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USFI87400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e805b9ea7b58bb37d9416fb6f66aab6e9fc6ff79e4eab32624093fa6d87064. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USFI87400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11368cecd0d0b84c2285912e00b63781769fe2da87527db151010785fe3e93a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USFI87400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44368ba88acd7065cff782c6af4ca069127dae38c5666095cd6e8aa812ae298. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCA29500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73adbeb1af7781a13ec647bc271810e2947de15af930ad38916f6be9240daf9a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USCA29100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26b842c1b31af96029a3a735ad542f6b06b6d8b779701bddc7d7fc10da6b1f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCA20201138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac9d49018fa7bee656ba272b494293627f66e7233b94810e26ac542eb43bff2. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USCA20201139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd79c8d92a4b9455706fa81311f97cfb2a85aa3e1b7d4ad03b0ce263e8ab3e90. 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/USCA20201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95364d1d043519df198b3a1b408677711a976cde54bf801b1ec77d5941b04b13. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USAR11100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d9b14cb7bd30e69b6718fd0acf18c027070224a05fb516dca4a74ac1accb7. 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/USAR11100174.
Reflections Of Monk - The Final Frontier
Reflections of Monk - The Final Frontier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbba13e767d37b2bf60d187213db74818ecaedeef254ca3fa89d0b259f1897bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USC4R1604888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2532168426e2b46878e4cd91485eb04fb2febd6339c4ba1d831cf71bb34e9334. 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/USC4R1604890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa38b81c62550fc1b5423b4ce0f24385d8f8d1a4df3fe6aa7373fb9686d900. 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/USC4R1604892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d59e58d7a43a4e5957c3e1205c3a26d16a51f42f1397f67bba2a5690dd9a82a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMFMG1560809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c63078833c6c29fa3df72a4e6dd2963ae3a8a016e7b679a52f049b8e06a040. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SE6I32004419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6586a1adbb9eb296b2eadeef11af3eb2487b07f22a498856dd3c6daa78b08f56. 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/SE6I32004420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91edae7c2b6c66af98ac70e0ff4e56ae2e3ff066d53b8a270c84730037a2a561. 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/SE6I32004421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268da08f4a687873805c25790764407ff3436c3b7f851d0265c89d20d88322fb. 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/SE6I32004422.
Dr Follows Dance - Night Dreamer D2D Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28c165338f8ff584b2e3c534a9d4cf598ab30a0d9a09d20f496907b5a113408. 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/SE6I32004423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc1412b9b9a491623cd095836295b5e37f8d5200d5373ac2c138a8d7168a90. 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/QM9K31201478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e0c90cafd02eeacebf8189772deccc64c1e59663a541fb1d331de528fd89e5. 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/QM9K31201479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d11cd8fe31c70e6aa3d287704b8fac1fc04f3083f03617258f0eb32ce6edb. 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/QM9K31201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6d622518ecdfe1683fb0f0f3d8a4edb37d713ca43c3848552523e915d9423e. 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/QM9K31201481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39105c2a00c60343cca55264a49f76ee983f1ab58e41ee7140510f6cc21f3ae4. 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/QM9K31201482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d61d8e68fc4b67530a24f30a0e57d5b093a3a98719035e312d4baf2d58291. 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/QM9K31201457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0a5b25e406f569e074c2be3fd14ba828b02974c3f4df83264ae8053c86547d. 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/QM9K31201483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd2b22ebaf90718321260e06959129ef9b88a91f6fc0b3a61ac04ac0f03f003. 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/QM9K31201484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8006d278fe94b41dfb74d9158189462766b720faf8ad3b8fdc1f008e1d260. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/AUBNM1900127.
Sweet Sweet Spirit - Homage to Doris Akers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4eb036e2a7410656cd88dd6ee2240d94b3900a4ac43ffff5b039f6b7389a8a. 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/AUBNM1900125.