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 0x7c5e47177c83764d83c78a6f204be76e8fdeacf74709441f043106857a045f35. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bca2a0b-8c68-4e86-8736-ebac8307a5d5.json and https://artists.proofprofile.net/proofs/artist/8bca2a0b-8c68-4e86-8736-ebac8307a5d5.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 0x8daa79816fe8ff34dbb502be7d43190e1e0d0d2a9eed0128d545cf0a2413094b. 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/USFK91300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7482155b85601d32989edb5025aa14b966e4d672666bdcdfad5e2c90cf2b73d3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USFK91300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ac763cf2c2c08da6bec3b0954a073ef1a66ed0fe92fdcf79b713c60d428ca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USFK91300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dce5dced2c6c247a0ea1d0b5dfb0e3f1b3c561f9834707f4fb82834be75016. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USFK91300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627b02f979fc6d6ba2d543cd370c32244b74c8e65352fd092f925987baa938f5. 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/USFK91300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c407aa9be9e966ff659ad2f781dd25856de2c673f003f7bd0b5eb017812e7d0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USFK91100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a2c90d8543c090523da747e56053003f34ca7a28f2a49809d1b6a8300e27d2. 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/USFK91100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db09b23c724b77c3031acae0e30534d8eed7868846e0be4fa316fabf8e60d55. 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/USFK91100259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c7f24bfba255ca47f2591e536368d24e58346eabf2a027d1f0f60220a3bfc3. 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/USFK91100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a50ddc9618ea3f0e9f586583896a5134be3446527a65a2235852d90859ce0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFK91100265.