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 0x18d4fa065938854aabcea0d43ee97d3243cbcebc1ea3e948d6b6f8ab5e9ac619. 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/3f34c920-c85a-487e-92b2-81159b4b8ba1.json and https://artists.proofprofile.net/proofs/artist/3f34c920-c85a-487e-92b2-81159b4b8ba1.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 0x9b5b04d0d90bd71821721cb4fe51abe4a790ead92bb7ee1c11d922d325864989. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USDHM1505300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9d63c52fda9abf9984568610dd517f8b35f7637b1319c65e2f5400ac902df5. 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/USDHM1505301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285736ec14bb963fe8c2887039de13417d966bf15063f6246c48235d17d1a01d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:27:48Z), 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/USDHM1505302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c5c9425a38544e874e5933f8d59198216012a21e68149c5e68c964dc4f3fc6. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USDHM1505303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766b0825fb504bebe9dfb8ed8d956a17001650fedf8488c3d9bd9c4a32f8e275. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/USDHM1626811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c85054e29d41017317a4184f3e9d00817fa721900e25d31abd4bd876945018a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:54:41Z), 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/USDHM1626812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6151eb412ed1bb18b8477e64effb88bf31876cf1418b479319fa29cebab96bcd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USDHM1626813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054a4426e41e9d2772bb60d0feaa5c5134bc8cd0bd756242c5cdefbb98b8a24. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USDHM1626814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6117cbf597f782d2e3bd191e48a5e94f306b60c10345af176fcecc3c39a974a5. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:13Z), 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/USDHM1626817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406fc65cc2d419fe8d87d0f36b9f412a2b128cd259f0b61b60213811f50c027a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USDHM1626818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda6f0e1bd7460cdb563c8f2e2ed5e0260fbd81ac8807f358b7e376f0a36aabd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:53:33Z), 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/USDHM1626819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47f5f0bbe2ea4d44ac99298d1a605222deb85dfa3a4f1104c9db6cad5377dbd. 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/USDHM1626820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97fe4d84f0f0120b0c3cb4a9e79c97f29403328f2dc7d1a6b70599f64cc13e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDHM1815089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d79dc00082615ec2ed52651ec5a62f1c405f8d746c2bcd9e851048cd5cf48. 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/USDHM1906937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a5e7853555407a763f70f1ae6c7fc8d3b92048191cc5d39d2783e46ff67e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDHM1913135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0600751471145a0799ebfef0b145d6207d835e848f350bfb76d027c6e0b9080. 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/GX3Q92040063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadac823f66ef80566a6e8fd95750b7e142cfac9cc4a48ae8aaf2491bfb9b261. 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/GX3Q92161755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a518c9dc2023149772f2953f493397f6c15a9e90fd5c873fd2bab89d9eb82f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GX3Q92353405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadac823f66ef80566a6e8fd95750b7e142cfac9cc4a48ae8aaf2491bfb9b261. 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/GX3Q92161755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176ea03f2a8215162b64c9918513f7a6c552f0ef29a5aaec7889a35993fea4f6. 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/GX53U2009218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a518c9dc2023149772f2953f493397f6c15a9e90fd5c873fd2bab89d9eb82f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GX3Q92353405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261651e76ddcdcea388a8a5ca59acd1a725dccbc9ad0c0bfa99c8662f6bf835a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX3Q92354567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80e532a444d43062d44b5c9339550d111f3fab7bfe6969cc0fcbee7639bee4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GX3Q92354569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568eb644d9077a3fc909462df34450dd8f0511c24375747fc4db335d06a13f40. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:41:01Z), 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/GX3Q92354570.
Hazlo Como Hombre (Banda Sonora Original de la Película)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc2b6172da38d8b7cc29c4f0d5d63ab11386ceb4e59a2bc20987ae1d186b117. 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/FR96X1732321.