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 0xf784a14d32523bd5a5d0cedd8c07a226083f4f1a43bc0d1193a4962c5a1d0aee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/500ee720-2723-45f9-a917-8d99c6387369.json and https://artists.proofprofile.net/proofs/artist/500ee720-2723-45f9-a917-8d99c6387369.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 0x8ae8f4b17cb720394687d600b3a5da57606f803a7ebd13aedb17f7af609dac20. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/US7VG1846908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47bd5ba26555ffe559a9af5e95e18e6ef3c8c4321f78726445a7a2f9eea6998. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE6XW2160175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd014034fb8f84898fa19857799b2eab9291bdbc873604b2e45c15b6d39ea204b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE6TI2194933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46061121aa3ba45ea4b3f032e30767127df511cd2eeeb9488a506068f0067e48. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:17:57Z), 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/SE6TI2194935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32acf44b1a966264c26f7b6ee5a22b940818067ca51c51d64df671453cb5cfb8. 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/SE6TI2194943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fa914d9954db79366f07cb24d0dbbb63dc3a53fe5f991262d2cab18ad6f994. 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/SE6XX2104143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3466ed4a202c3139065d3d94dbbf8bc7ca387e9ef661af09c4303e7497b28c3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6XX2104902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612610a2363c84cfdba5eeeebc88be5fad4b9d8d4051fcd6fe8e721907a25be0. 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/SE6XX2104905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684aac3089859b8e355f596368e5b1c4973328697010c3a576116cf24665cfec. 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/SE6I32353272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe65a1356e9b5aaa56b117340e43787cbb3fb8cb1dbf45ec1b97318ad47a1dc7. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/SE6SA2303418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce681f0948257b7f1376d0af11f550e74fbea40553d4fe7c7c839593957684. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6XW2309486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda8fcc63982565a8f1cb6807f6cbfc47f153ca0d9ad2c5e27bd2d847b0db404. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE6HN2409055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fbea03b73087a620371b77302d8e2494d74d116469cc7b14f94ffc01369084. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SE6I32440985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7daa6dfce91f97655c32040c66f2dbab27a9332b2760620844ac91414abf761. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6SA2459597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c406337c573615dc9cae6967dc0926392eb5ed6a51cc96a9e640c89086dbfe1. 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/SE6SA2459603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e37b3bcd120c5c307418d4b411a34d9c156939e33e6f720cb5a3581213b6b8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE6XY2502068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910c1ab62ad58e55fc8df09e213491d3f6f358eb2a1477bc4649b6a0a6986c9b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6XY2527647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e6ea9d52fc8554c3b1d374fa5ce860046c6a52afee6c69b4f0a54b35fd6d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6XY2551969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051b139492710cbca01f480cbb0b8a71f36eb15c790cc22a3ed6ac590f6bd617. 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/SE6XY2551970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57335ba9f989822684f83099b8b45eb5ce936e1cf961e033af32f057c4b44a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SE6XY2551971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5175924c2d296e4a1819e398b0b77d89ba9ce60cadbf15a7114be99263c8a7. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/SE6XY2551972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd5117a90aa28dc8b516c1c8b06f9a5affff57a71bb66b4ad259605a584de7. 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/SE6XY2551974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7a20122913c8a3730e4fd06bbbeb7fddecc86287abc1bdb444d3a091c4db3d. 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/SE6XY2551976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7f7101f978d5dd2d1f6b2e67d2b5c091a9ccd0f1892ad194cc0f905906e473. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/SE6XY2551978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993407cc573466ef21d6e64910198cb83e233bcce0735c2887660032141b2b17. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6SA2535630.