John Mosca may refer to: John Mosca (restaurateur) (19252011), American restaurateur John Mosca (musician) (born 1950), American jazz trombonist
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 0x3b54a397487778e3e4e8d57b877811df83796e3a26d06d3171c683cbfbe59b4f. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7db46ab9-98a4-4e55-ac4e-d0265159bc56.json and https://artists.proofprofile.net/proofs/artist/7db46ab9-98a4-4e55-ac4e-d0265159bc56.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 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 0x25ba425cf9882b023f232c5171db94d55abbebfc3b92ed60ee809dcdbb5ee564. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USRC19808415.
The Mel Lewis Jazz Orchestra: The Definitive Thad Jones, Vol. 1
Low Down - Live at the Village Vanguard, 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e7c98fcfefbca5ddf673537eee3bab7542fae0b0fea530ddfa5b3b776c6db5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USMU10820381.
Quietude - Live at the Village Vanguard, 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b4f2c26a5696355177fc39f4bbfdac0f99ccbc3a7da4da136485e10436078. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/USMU10820382.
Three In One - Live at the Village Vanguard, 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e321316975c07a2646c61df58974e870d0f29118773181e2773c27f1a7a85b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USMU10820383.
Walkin' About - Live at the Village Vanguard, 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a32ef687d5866b9a0b65900bb98a2a296427beb636c7c4d861123f55b922ec6. 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/USMU10820384.
Little Pixie - Live at the Village Vanguard, 1988
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918cfeefb090107a35229fbc04176e4a6f64afaca150521735495aaed913c02. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USMU10820385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9fa3e2b0573843ec3efb84bdf0ddc8e652b63a8179003620f2e58edc044c60. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US4QP0453401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8397dc3932436b224441e116fa8958f9f4e55a72e5ede2f6f4d2acad4cd61f7f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US4QP0453402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb193e62f588c35c768bd87115eeb9759c8f6fdb3656805308ffdfacd70296. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US4QP0453403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0789f5407de2d6c218df63dc338a8cc7e41ca4556d90ef6961f9a6cd190f1d6a. 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/US4QP0453404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c976d52409084b036f6e68626eacb6c763207b975f692a72231f268f1e20a33. 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/US4QP0453405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed9a11e705f78e967ff16047a397f10eaee891185798acc875c4403b6088de. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US4QP0453406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133b9a6794ad095772002de1b835fee333b18773c5116dae5791d78d4c4a4d9d. 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/DKARS1800205.