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 0x9e557a2b9b76f5fac1fb1114e6579ccceea1661d93e84f5e03467a53b299f8d2. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e020ac44-8467-4efc-8446-d2b750f1ffc4.json and https://artists.proofprofile.net/proofs/artist/e020ac44-8467-4efc-8446-d2b750f1ffc4.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 0x2f7249f5d3507808aeb0a64ee5dead145afbe950b798d80b0e7f4662ac69ba60. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USCGJ2247157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2c41d2443e0d3c294a4995e11458294ffaaab078894ee2a9d0c995c38c1ac7. 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/USDY42437476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e320b3f05eed22e076e05a1f9530bc21b625c5b1b9e4117d2df596fccbaeb3. 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/USCGJ2427920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e930254a546cbf37aab9de45330016ddbf2cc3b72845e824f5ac44e6a5f4c7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDY42437477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd599fc9b236adcabc63abb8b69db73339fb20c4ab657c29e9deef8037a0ec148. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY42437478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5e0535dac8afc6ac11c9ce40a4f71d3ba0b17a6212efef3301bf861fcba182. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/USDY42437479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf6f399772f2758142d1b15dd0550dedd1f86ecf137430959bf54692322e047. 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/USDY42437480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e56a5b74b3693007e1bbc643d44b93692bfdacef1940307a7c54471fa8d9df8. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USL4R2475121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05660c2576d62296124b09dc0bd79eac7f839d5eba7adf91bf0d5296b8f546e0. 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/USL4Q2587874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedf201917ae66e6b1ccea2422d266c29fea6576cb6336366e5641f31a6934cc. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USHM82549333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd752d2341279cba88eb8a9742a618597f1c8b59eb0fc3fea1fd41d2c0a6606. 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/USHM92594855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730927e5619e861664320581549b5005a0717e822f85e3f4046fd289edf66b03. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USL4Q2587876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b92b142a16c9835c15263040c94dcb62a2d9e3e25f3cdedc54c82be645e4ad2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4Q2587877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c8f4481ac8b8d38af71eac50634ef314ef19f632dcf381e0997f34cb044691. 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/USL4Q2587878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94001c02244ec0cc7817167e74d54afb8d0f3ab777a8efdb3db98890964a47aa. 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/USL4Q2587879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1762f45cc8da57165c8725c4f3c38d38534406a2abbec0defd90280b93b8294a. 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/USL4Q2587880.