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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27340be1dac5c687ef04792ab06a44bbde30e471360afcb13b5ea43e4adfcc3b. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/043601c9-1810-410d-b898-01acf4d30825.json and https://artists.proofprofile.net/proofs/artist/043601c9-1810-410d-b898-01acf4d30825.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe21065e27aceab7f5b53dd645a7e8c5a3585faf09a2fea31d6b8d564e8ec35. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM22125913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e946340957a098eda00f7681bd6d32c8d6569f1898513d95098d433026b2df3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM22125914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4585282abba35fd810cb4dd8cc2a3859f843ac311fc1dbe14313e85f358f427. 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/USHM22125922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dbb60676da860b2cac2e9b0130125e9d91783efad9e79ef5923b259698762e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM22125927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96932bd816f65e9ffcdeb6b697317097379520c5de2167a2f5cec6cd21e14f35. 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/USHM22125928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da3249973bef8f1644b88369b9d6b8dbcb687abc20c0795b5589158184b7f3e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USHM22125930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f41ec7feac84e0502e1e7cf08c6235a29dd740c4324bf8613ddb5622f2adb. 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/USHM22125925.
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 0x94c48942564e01a88d69a663f3c23cbacbbf159f0df153958fe2a8bb7d32390d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH2004969.
Fat Flava Music Presenta: Special Xmas, Vol.7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc900aa46928c96bc3bed45954a86f631474237f6b99713ebaace268ab7c11aa4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZW9M2354990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc170e3573e54b2f84cb3f8e84dc6610b909c251e3680d7152bf9c75bedae943c. 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/QZW9M2354991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f910c255bee1fe00705c0bc274323e96a1263e8552ebd4457e2f93bfe0bf055. 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/QZW9M2354993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827986a9adb8c77fac1d78fc71a6ab31c9726ff9fb07722dda8e9ee70fa31371. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CLUZ21800612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29c5a437c39d6e814e9bfaf26d97f27aa41e384fb35ac46566e61b7f06fa3ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJY2006469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1086faf485b18af2147b38de972fd858530fdba35cf6b8f2b48d0acbd2abb. 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/QZNJY2006470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9d2ae34b00af2b7f40382e8e2a7cbb76b91dd0bd43f795ba34113e05a1d6e0. 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/QZNJY2006473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a79c765391d2443ea2c6dfcf8b3a6a81480959b678a3ed237bbfed0b8329b2. 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/QZNJY2006474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fb25c02a1d49df2bae90feb3aadfd23b0b1021a926e2ec11b6975ccc007aaf. 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/QZNJY2006475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf8422777688473f49e5bd7896acb8e8b9aec83647649c806a2095292697b42. 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/QZNJY2006478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8c24a0e33b034491182e3596aa504dbe680425e0aea267f8cdd60479727e50. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJY2006479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc827744addd9ffdc49888e604013c0c41d0475cb8fcb08f9a086134fb8a072c5. 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/QZNJY2006481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7aaa33dbc689bacf2f0cc70ce6197b4b4ba7220d3b33e8c3efe7175eea47a. 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/QZNJY2006485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae66ccb4931820b869634679802256b2acb72ce746b384ab0e6a8f2ad22826b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZNJY2006480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835895b47e6cf45ac1e8d649c96d618d203bb45e78ecb6cbaea5553c487536b7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CLUZ21800655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818b617f445fc0f02eece8b71a6bba6540715d37da230e22b0c54e4658d62ba7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM22402561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43a261df00d00485825d5fcff0c372d55ad69a16b9f32d89b76a48a354bdd5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJX2371077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b6713cbbcac534d8d55cda843104d21e6e2dc5e0e07c6077bcc32e551ebf64. 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/FR96X2310528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5967af26746e20da24e5aa80a62c9e233b22ae8f82932e81d2688d05eac2669. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADQ1894962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba5112bf58b7823267ced9722d6b9ea03876822621e7ba45912a6d49a4e1647. 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/TCADQ1894995.