Michael T. Mainieri Jr. (born July 4, 1938) is an American vibraphonist, known for his work with the jazz fusion group Steps Ahead. He is married to the singer-songwriter and harpist Dee Carstensen.
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 0xdd3801328c558182dc4afe1db36e31ef96aa2e0f00058cdaf757e5cfed1cfd34. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b9c9b9d-1370-4d63-9cf6-3028b3b40edb.json and https://artists.proofprofile.net/proofs/artist/8b9c9b9d-1370-4d63-9cf6-3028b3b40edb.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 0x4921dfde66f19ea0e6cc7f1db6698b59d22626aaf0925f8b6cf4ebb1f4cc2a9f. 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/USEZT0610066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4592d100dd31e53e42508fb95ccaa81bf071e5e5e205997c459e71036279e. 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/USEZT0610135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0b4acffee38c5a462487e9013d6534d5b29271f175584f91f43e83992355b. 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/USEZT0610133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495fa62a8f0c82f24412081bfd454d27943d66841847dc5db8ff4dd5bcaba650. 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/USEZT0610139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe4ee34d9ffe986069e7e3e4cbff41caf853accb8ffc79a6a007e1372cd9491. 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/USEZT0610140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a77cc85507c99acb13049fdae206af5f99ae1dc07440041b9dc00ff4100b9a7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USEZT0610134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f76c89d59dbe4e571b32f668ab886098f8f6a696a13a2cf0198107b00017a2. 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/USEZT0610136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bac7b7d6245b44fc8bfb7ab7acbeb3c2052ba8d9ccb07e3c2f20c0c228b5f0. 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/USEZT0610151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fa36829e89417efb3aa5e48a869e2229f1eedd9b4ac0b2e0acf331915d8d9e. 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/USEZT0610141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb0fbb040e17a47b6e0ae9a18307960f85ad193e58beb166fd0549248a74f04. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USEBB1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed943d10be7d58125ccce0e7cdfbc276eba742cff73ec5984880b02a3a0ceb5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USEZT0610138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb175bd5b08433238022ee7e555ba471e982168bf2aac66391e7d469bed3b7. 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/USEZT0610149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eba0b7cfc099cedde0e067c216076a86d6a873995c24c32157bb0d563fe533. 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/USEBB1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c42a21e9de04ba4f96cba064b579f2867ed63425a212f372cbb302ef2c46975. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USEBB1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df67e343d5f5641c22e0cebb6370819bfc8a7f286f42d8ad692ea056dc5537d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USEZT0610137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205813f4e58238ac47bba808a6aa9c44feda81316ae21a437f39b5afae46304. 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/USEZT0610142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e2de1ce0d6b1533433fd4a8e791693210381cf701d31edb47edda75801190. 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/USEZT0610143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705842c7e4108b2b89b9df195e174c03927d20cac5acc7b8ee93e80d1e8f7402. 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/USEBB1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162802ba14c2a76240fd61cb8050d9f709647432203fad74ff656f6c9f84b203. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/USEZT0610144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715a69b427042464d32e16f1107e56004665eb494c0c2ee1ed726fcdc86a0368. 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/USEZT0610148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a6139dfa3fa58bb984e9e972e314302eb4496478084d5acc81a7ec6ef93834. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USEZT0610153.