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 0x9a63a0db9969495f7f1f3b263d716da21345ee1b067fa4487eacfd07571aa74f. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f011ad84-6ed7-4d5a-a809-4ed6d3fdc60d.json and https://artists.proofprofile.net/proofs/artist/f011ad84-6ed7-4d5a-a809-4ed6d3fdc60d.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 0x18d461e02d4b347e0cc4e9f4b129b413b7983740be2bdd58b9120da8c09938cf. 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/NOJRA5833030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc850f7a49f67a1ec947403f901a1b2108a769f7102e7ecc886b71b8df777d8cd. 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/NOJRA5834040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d233b4cee413978b3414f9eac218359c8942140f5137748b378df7c547d819. 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/NOJRA5835040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcc9a8797ee29baabcb85d40ba4057fc01a003ed1b904127ac58b765dcd82bd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOJRA5835050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813145176a64241ffd721b3b7d6ec9d2970f27deb6868b96c5411b385156d45. 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/NOJRA5834100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b0c0918944ece75cd140a6cee9cef9b198f71562d3434a48fba90cfc1e1cf. 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/NOJRA5833110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459ff673e194613a15b4926bda300318ef799e3f5caa1022a942a05a8f61b7cb. 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/NOX9X3308112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea02b866029f359caf38f050904e6860e038b19be829132fcdb534d599a1fe2. 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/NOJRA0312020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d35ab7fa4fa3a28fb6d50db52a804329a2756ff2797f8453dc001b59639897. 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/NOJRA0312040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3686005f1d839c11f1ded2117c73a7a1f3f983c3e5a648f95b66bc1cd395cbb0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOJRA0312050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf47ae7e67e0594d9796a5c74821511e617e600caa6bccb56445df480721f7a. 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/NOJRS1532070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3cff22d8968d9e25e80a88479db229d9fe0124666619ba0ab1058cccea7d92. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOJRS1532120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf505b222f8154c261efd45cf7a139140669fab422ddd7bc4c8767ec7353c43ed. 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/NOJRS1533020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484a4955b4eebce85e92dc43c737e0e11f1b79ab438c87242b5ee660ff63e9bb. 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/NOJRS1533110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763cdacf841ee3daa0d316df79b9c17c2b2c0344351c4fd05be60c1bddec43a5. 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/NOJRA5818020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e00d8798b6ffedd9e91dedd2174f7cc9f2dd4772c2e4b26546fcc67fc41a30. 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/NOJRA5818040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea315ca7015c29d475202826b404182e493d2fc59810f58abdefa8fbd38001ae. 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/NOJRA5818050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb507ae8f474a15c274fbbb9341eec35eccf2d81cbd21a74ec66d6fc3ac4a12fc. 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/NOJRA5818100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c84310244a257076be58196f3f4905d10c5f69d8941cb8f9bd6e742d5ebf26. 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/NOJRA5818110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8974d188df27390fb81dd316efb3e3c76c2deabc29dac8044f75ddc39d892. 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/NOJRA5817050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb12351f0c76396e8513f8800cc8b11f2cdecf151fb5850e6e7584603ffd007. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:11Z), 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/NOJRA5817070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604e289b8bc1e4ac8e6825ae6adaec14895a2adfa030627b60fa604bed682298. 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/NOJRA5817080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad374ce2da083a4940075ba48e6faee6c1e40f2cd03199945a39076263fa7a. 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/NOJRA5817090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cd3befe68f8113d0eafba19f1d8070e8180f8f38d2ca1dc11a03b61f0a73a. 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/NOJRA5817110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73cfc0e39c4f2feb6b353023d45240b5fa41c5ed19a8d00888dcb0f89eeb258. 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/NOJRA5817120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd16883eba7b74490428951d4a1b579243a5c23fb0fba2e27f4754f93d039ba. 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/NOCAN2305010.