1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa52dee5801b93fed006b09c1f2e2eaa11b1ad5c1f9140515b93fbecf335357bd. 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/1b31e52e-5d29-469f-894c-00b104b0f9ad.json and https://artists.proofprofile.net/proofs/artist/1b31e52e-5d29-469f-894c-00b104b0f9ad.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 → block OTSBitcoinBlock must exist at that height 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 0xb4a04fa5630d56d9eef3437a88739f22674a8b039fd0dd8bd9f9054af8a8c55d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZC62438111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fa815c460aeb02bdee1053fd2aa83b387fa4003a3159b89e2f2b5f951f8187. 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/DEZC62441957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa748ec9d243aa14f88f2a3f5ca93921ea33e4d5b822545f2fad8e752b15417. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62448223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09569c618a8bca2e4ab6c2a5d428bb164133f272b0d20340e0809b8a0d564a4. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEZC62465394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a176daffa4bd424ada528e69c7c74d26ce532a1a7b1f8c9d3a19ed3a01e90. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62469222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3479420158d835022ab6e83d3335573d517c2c70440a0e61483c5fe7a6822d95. 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/DEZC62587907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad82f7c5ffb65ca256a62f1a39d8e2fdd00b37a5f105bda639459a170e1a76bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62579685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315b112a041d6a03f79a6608ccd99a2d0e5407bf8754997d0668d273ddcf27c. 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/DEZC62587908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7533a588aa2d338808220f40213a01afd32fe0623f48cbf9ddb28ea530af5. 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/DEZC62587909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9464cbf3b87ca07a0418e5e5df06dbe7ec4fa2d438f7d22c8c5ce260ebb64ae. 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/DEZC62585443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd629ed048c91e16c2ce5fa222dd1369f1bf9361cc09b96946fc26ee5eb6e9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZC62587910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ad65fc4042830977b049838e63caa9b1ded4aefbfca95d4b5aad536df6456. 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/DEZC62587911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2549060b2a133133a3da43fcc8768622c2c07a90a921d215d001bc16077af756. 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/DEZC62460551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a176daffa4bd424ada528e69c7c74d26ce532a1a7b1f8c9d3a19ed3a01e90. 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/DEZC62469222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1448105ece3f4fb951d424dfa3fbb76e4fcdc2a04c748ffddc34cae11dc0a01. 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/DEZC62587880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8dee4d8802e5dc735f9d54c4ef0bff265b71fe1ceee4fe6d958466e3975798. 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/DEZC62456130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652b626b08d1a36ced91f7d9e953a09e88c1727c511f1c0ebb5502121b7560a5. 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/DEZC62587912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41da7965dcbd738815aae97240da11f75238f2734d862c835d483e617d796a6. 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/DEZC62587898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd28de485be81a22283514f982cf6c6b4051a4ad8c5a10c247956db1787f63c0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZC62598840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c9d204e1c6b0f35da9c407efdb94215774ca7fc26ef01bda34083f94fe4aee. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:53Z), 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/DEZC62514031.