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 0xdf95d542184aff434cb5faac44266729b0f20ebab97a665e3c32fe0882a89dca. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e41bea6d-b54a-4bee-87f6-39baa726b622.json and https://artists.proofprofile.net/proofs/artist/e41bea6d-b54a-4bee-87f6-39baa726b622.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 0xa43620d85150e8b74ac1a30891be6a3d59d75334fe146220457386322b216288. 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/USHM22090830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691772907485d4f4c0695931def2bfeefc660b462515474d2ab94387cad22936. 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/USHM22090833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a7ba234e7fdb6a26d5abdd110ffa54c84858a218ed9ae63d91bbc7c460cccc. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/USHM22090837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1399feddb01e8d0189c6c9c8dd95e9a46c1f6d0df36448d5664d062da368a32d. 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/USHM22090839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2793a3e4dff2b14715d5e4016d9e944759251cb406cd4406d76fe5fd2f4cc2f3. 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/CLUZ21800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e6b92a92c641a3378a27f6b8d18b05a1cab1d83b4831baabba5c47c3f03bb4. 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/CLUZ21800571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4af73a6a4d966501761ea3307fab8ea802e8366af342e8a39fc0354e5fdb0. 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/CLUZ21800574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc00b590d145277890e549b7028251ebe09a04395289168c3be8ddd4a33bd10. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CLUZ21800572.
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
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 0x1888281fb2b4a65f0af68dad4b53d376b97ceca9be6ddcec9a9306c284842d35. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CLUZ21800632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f65ab7f6bff023ef708ddb72c50cd9d84d6383a63d6aacb384f63d74763051d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CLUZ21800625.
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 0x7ba9e0a20b62f4207c4dc1d04b24dedd9952b741788611f4d408134224211bac. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CLUZ21800577.