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 0xe235aec10971a3d1419007e10457a1f85cc9043b1767e1ad535de2ccdcee7535. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c77ca63e-8674-45ac-9120-9d0069c37176.json and https://artists.proofprofile.net/proofs/artist/c77ca63e-8674-45ac-9120-9d0069c37176.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 0x7d417fce4fe2942ce00d30a0256481ddbe388b6273fe46f83b426453e919e0e4. 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/TWBF31902002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bef4549da2432914cb408dcfe0d11d0407a58dcf986b0a00e3520d524d58dd9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TWBF31902004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08efce28ea30f6aaae6c17e3e8a9dff5cdef9046ac822754bc7cd0de6e80df88. 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/TWBF31902005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebae519f8abee2c7beba819cbf2efea39ca0e36f3871e81f022f64b388c0c670. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWBF31902006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1885f7606ef891746bac7ce15a976ddb7aec63d0a629ee541c99b7c9e2cea53. 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/TWBF31902007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb08a8cab53f9e827ab85c396934f3292c9f400a543ec9549aae406e08aa743. 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/TWBF31902008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd1719fbc01c613c57432eeff9acdf360f56bb611572c566b34787eecad6df. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWBF31902009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b3b8bf1c43fc910747dc4f60af52d63d3e2990f4980b3fe180c1055a1450f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32101307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811b98016593753d4f8fe1efdaa9d2f1e5310d6985a4158ce393701df1ce2584. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE31601084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b7265cb6f771063f49bd2c771e33ed5293fd48616e11c21fba3dcb2208c1d7. 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/TCAEA1821989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc385971da447323e622d667b9d523716d2fd310852d5a8ece91c625b37fd4a6c. 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/TCAEA1821991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb00e3e027e510dd7b0a7431f39116cab557404579e46fedc2389695c01dab3a. 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/TCAEA1821992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6123fdf7fa4eec193afadd3e289a65368bf5e40aa93e3ee8b71a6e245e1093d. 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/TCAEA1821993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0154050ab0c7c18da0d91c5299688fe4c39ddee0e0168c7528a61cf18c244a9a. 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/TCAEA1821995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94bff50f6a58579710b89dff2910e4fcd8ac4f46f4407983cff9bc2514703db. 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/TCAEA1821997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb410698eb664268bbf8c4f0f4a6c9b9b9a7a3d87fc2719f861ebaebb160038f8. 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/TCAEA1821998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5731b70989fd1674248b3dc289e828de343d8325fa10e918307a53fe4d2ed20. 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/TCAEA1821999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceb3e22c19b6bbbca597be672743c8d62bcc946009e87e3458a96c25144ffcf. 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/TCAEA1822002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640dd2b36abe6588584fd3429b3288d17e468f8ac7de96f33695d6a9f096888b. 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/TCAEA1822004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab775f5f72a5f8031e1f8e2b7d485574d18c36fb44f641de9ec99aec5537e9f. 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/TCAEA1822006.