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 0xfc1566265e90648e916966ddcfc0e9c127a0e0a4066330bd33be6d9a6dde9531. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15498f32-265d-4666-82e0-04199368ecf5.json and https://artists.proofprofile.net/proofs/artist/15498f32-265d-4666-82e0-04199368ecf5.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 0xa13c7d7b1fdf4d673dcf9b0bcad4b2dcedaaa78294c1c8d1a565e12f8dc12ac3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SGB502225165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104bfaa0928c908693d83bb88917b613de6aa2bb15301601f9d09ee83be46e8d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SGB502235841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc03cc2843f55d057e7f2aa41ed94d14404a7e1da6b1f7a8b0fe7c6e52d916e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SGB502235843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8e05a00d14b0cad9cc48c7223960726e16ef01eca2494fbb6ed89828f1578f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGB502237588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe967e917add63befde84657ca708f18b29c23276f98310bc7164254f2215a977. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SGB502241014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57331f817a2ac8a9d51078132025525fb8fb0966935411c6728fb0b4cb92c67f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SGB502239980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39817cf3a0b8b9459c8bd5316814cc74e4b6020938f9e9a208be2b3118e18165. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:52Z), 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/SGB502277582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bae7afb17c5782e51c12b020b2ba208260cfc9c6790bdbd623f78de7fd9bda. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SGB502278147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f569688fd32b89a65bb7e09bc7bdadcdcc5df775d057dfcedab73ecc0c52da. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SGB502282804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa659affb45e0bb5ab4ba4382d8a8e2bb05981374c995ec9f41497c0fab90f8. 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/SGB502285421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cfa0f884d373ac458a676c66ecaa2d7aeb7424a3d41ca7cbd81aa4c87e8753. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SGB502305295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd6932f8ee4d72e11591710ed5f3f60ace3730ef237a7596199a7adb954e8d5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:29Z), 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/SGB502318891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb35ae03c3616822a498dfc48209a1483b4ce4831dee67de815cb1f58351e72. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGB502350570.