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 0x7717559acd989c6b4576bfa4beb7e741fdf83dbfead9762d757a1ae665f31b57. 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/04fe3e6f-2afb-404d-8e95-94139b752794.json and https://artists.proofprofile.net/proofs/artist/04fe3e6f-2afb-404d-8e95-94139b752794.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 0x4236f9c00b7799a191f69f01e26b520e0944a98fbd2acd9f474d93989230766c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:37:16Z), 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/DELJ82032809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d09e90922919a10fad55c296688f3bec2346b3db4b422d12230dab6826fe42. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZC62381420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba78d680c7fb26f91c4b0ae36891f797ece8ddf96478e6506a9d2019bf943fd1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZC62209470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d081aa405f9aed9a8cb0029c921d313097788c073e51dd26cdec333c6d493ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELJ82060342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9c4ed0cdc1c843be2833cfe8d4b05b1b03ebb522b82e145c368d2ff1a95f44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELJ81922767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb9ef39a9ce1ee24c865bad6eb73e6893afc7f28016dba96f9f68e10de69d6. 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/DELJ81825008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06cb08935e4e6ea53097f7af003539c6e8cd9a2e6ac9402e20c7427f7aac4ec. 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/DELJ81812345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46850ee594dc8a9b86b8ae5861d6f7e81fbc9b8ad3d6624e9d440ff7d65e4714. 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/DELJ81812346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5d6409af9d23ded013cfc83aa382abf2f0fb80305891b319d916b3097f3b6b. 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/DELJ81812347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8312641c0f59d074c967d84a4b1329b4769732650d680fe582e614f35e8fe33. 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/DELJ81812348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391614ef9aa199a5901408d5a6502c0c1aeecd485b108b3a8b5fa89354d61a15. 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/DELJ81812349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25149bee876c6644404e79c5782a3e83182e814e5a15df7b1f1f95e1a110fa0e. 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/DELJ81812350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53d7d92ce520d3562e106764d3f90c06a2021ba38e6ee00c4ec1e4e2990823. 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/DELJ81812351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d56cd4dd1d209058315432ebb75864a5499c9dbf564530915becbddd883cdfb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DELJ81812352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3489bba7d3407f82c9f55b3017af0631ca0fd2aa159c6349eb58a01afde50096. 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/DELJ81812353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b8e7e71b30b596a2d63f4b912ff926143eb3175a25626df2a560720509458a. 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/DELJ81803745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5710270bec0ccc1661eb8c13370d82265626e062a7c08cdc7b5391c10bd834. 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/DELJ81803750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6404ec6ae41ff191adad019d006ef7603ab3d75ed19bda2099951c3b2d59812. 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/DEUJ92200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada5f60fa8dbbc742962b35070012d2a04b59a77135126efe2b171474d53aa5. 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/DEUJ92200010.