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 0xf2e8a76ff8aa11b519473369acc708c52e7995eda6a9b3cc527dd41c473b8bc6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe195e43-0fe5-4c8e-8d9c-21301266091d.json and https://artists.proofprofile.net/proofs/artist/fe195e43-0fe5-4c8e-8d9c-21301266091d.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 0x4f237d7b8b7463e6700d2375658094e6cab301599a9e6038627d57bc7cdef64e. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/FR59R2069478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a43c6ff1dd1e11dd8af878112c53d5028cc27ea018b9bd3dd9b1fd4ba12d49. 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/FR59R2069479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2d7724e2521458b1676e166c51cc6f075ab3f6948a7c050f9efca742173c9c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR59R2069485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7066d25932b063f53690f8afbb7d5f69a6449eb7cea12822d9844510d67d74d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR59R2069486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8627302f52c733d6db4bef94a9c461e1b6708b5495a43337ce74c02f186dd137. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:24Z), 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/FR59R2069487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0476be8e3c8983818572f8a0fb62f926237fe3aace5050ce12c9f99fa114260c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:31:23Z), 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/FR59R2069491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5434d7993c54b3001cc744f0fc27b59dc66e040e81bd6801c6f75ec84ae6027d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FR59R2069445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d2d071dc8fbaee25d6a83b61195b1002ef4c9999413dff4876aa6f854c0d28. 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/FR59R2069447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314db59c327798dc07f4bef72c64a8d9eaf6788330edbd917a4a4b0cd2c6a69a. 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/FR59R2069449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2cdf6f1f3a66df42b1ba9353b875c7c3db6e44e174c61ee7f30fbb15caae61. 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/FR59R2069451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d84c23d58429fcacc20a319e9361ec6738a8e0e178c34c0b21219ec18093c4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR59R2069453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6751892e9925be1a8e65d7b8233aea7adfcc0cef74888a28e6260836bdfb0374. 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/FR59R2069454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642e1b1ce167a67310ec753beba3af37dbe054fe88bb26f1b4235f77e53f60f5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR59R2069455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9308787102e77ab43cad3c40537cfdc93799fbe5c0aed2c366c51a6c54c2cf. 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/FR59R2069456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864f848ee03f7c75d37814592124e32ee4a1012f957035d1e9e7283a8be4c39d. 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/DGA0P2453662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585f4da35df9111a4fc976c5516620fec0e8cbdc0024438a82b79f8136a43c25. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:38:28Z), 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/FR96X2303915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b45f27145c1fd005dd494c347a0c38fcc6e3a1ed807f71d31b4c24bf449605. 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/FRX872497868.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd147f3a89730218772f7cf804428b3e32613b74fd5c2376d3c68c964dd01a1. 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/GRDMM2501655.