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 0xd7e9b2042a7e48472fd2ef37d7344877aa8d771348a4d34dba17d7935e14dac4. 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/956c5bbb-9e97-4ad5-a874-721828c081fd.json and https://artists.proofprofile.net/proofs/artist/956c5bbb-9e97-4ad5-a874-721828c081fd.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 0x69a8e9444081050638b0fd3aa4cbfcf44325801e268f5521b933ee93837c5aaa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6I32396510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8156743f8d78659d09c276a5b1619e3ce56d4fd3e794cbff96af0773daaa6a55. 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/SE5BU2423159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa86bc632f81732efdc9ab9bce0e229c671d9177e5ca5504fa47a66228e4c2c2. 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/SE62M2383427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080409241e769b034bac93018d9e0eb68c2e94d43d7c4218d4f6bffa3a5a38eb. 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/SE6A92374495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8156743f8d78659d09c276a5b1619e3ce56d4fd3e794cbff96af0773daaa6a55. 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/SE5BU2423159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12b1a2eb2d14305f37646eac5e928f240bbf38c126306454435fa0f92dd242d. 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/SE5BU2422934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78956891c6a9b6acee9f5a4d51b592f0649e6053a9b17322a42d5510fdf0d1. 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/SE5BU2422737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba9b3c3083f2957175c4dd0ced60b86778f9668a3f7c5559958d8ece66109b4. 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/SE5BU2423157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78cfe3f40c0dc6957a5abd0923c437ead51c0fff8cb69c71de170f5019e59d. 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/SE6HN2310382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e9a4380e0bccca12ab2f251fb3bdcde2a182385466664d2cc9d77c18b21845. 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/SE5752460607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d7cc15768859cb8c461b198f6f1d2b2632735ea15c851521c0aeaff4cd512d. 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/PL31T2412656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299c5eb84fd4fad3ea4b4f3b1bb13ad4679951ab695c83e9572caf879c260758. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/PL31T2413468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92ddc305ecfb5d1dc8effd27fd9e10649a29051cee8f90735b205a1c2837c44. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PL31T2415572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc238ddbb44bf680c97132fc2f86b591edc6a03ed05985bfe24f42b0622995ccb. 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/PL31T2500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6746ce91b1b90da6b45f556cdf3301bbc0a9dce25b9c3c6db16ca826e645206b. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PL31T2500444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e84e317203a33675c9fecdcf4c46acd0d831b550395f2f59aecf526f58270b. 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/PL31T2501016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778eba425795bbe66fb165e8bda9fc670a4c836ea4887c532982c454831459d. 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/PLUM72400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92094548cc914f4da76520378d4c5341e78281fc94b73767b68f8264d0398cb. 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/PLUM72400071.