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 0xb3e58bb8582e7d2a72299773b8fc0a19d425f4606faf20b0df7e99345799836f. 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/5ba18ecf-0d3e-4e03-8c09-88a1374840a9.json and https://artists.proofprofile.net/proofs/artist/5ba18ecf-0d3e-4e03-8c09-88a1374840a9.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 0x15b2ca5853d36111ae51251c872efa9d861f8296fd4c693087bd8a8e51ee1b8c. 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/CADE72201611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d9d2563ff1f038158c64661b86ece769b0ea30ea3e2ec0ebe90bdf389a68fe. 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/CADE72201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891c5b1db86be8613754789ee00dfa57a35394349b5f738b55c35421817542bc. 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/CADE72201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa9e331a876d2fb647862a1c5c99799322205c4aa6595fbde16a3dfe46dd423. 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/CADE72201617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f1486db10ae3808270141bd67df7b6dc38d5c6858d7dd8925acf94994df1c8. 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/CADE72201618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a28d591e23388e0c16f9e127c1e0a5ac444f3754ab4ac467933d7fffef06d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CADE72201619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5dcef63b24270fd99a7dd39057f14963e88cd7afdf8f0f8ebc09dbd594a4b5. 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/CADE72101374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619e02cfc0f1e692e7cc8ef31554eaa7fb4d1171b388b358909788de1f889cbd. 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/CADE72101376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad9de48719370323ab0aae6e7d16d3794c777e77860e06c32186f3e78cb9b92. 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/CADE72101379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788cd2f240db9e6dad5a7f74ad83612636c5adcd493220d24905a41ce91f1319. 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/CADE72001253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33159ba13fbe9098183374a4bd1d2568f671a3b91df241048307499436fa86b4. 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/CADE72001254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229cce3fa9cb137661ffe37ba7a214419744498128c71bb3452893d517749436. 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/CADE72001256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157b38b8ffdb321c96be6a95b6e35708863fc086a09f5ce6a5fed4c524993bd5. 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/CADE71800762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98d389903dd8ff78b0ab75bd2f8674261ce1e6ca5c56ac57a74a4f3426152a3. 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/CADE71800754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1b28c457eb1e1f3c66f94b1bb428bd9f8e19ca1489a49cb02a438bdf3be68. 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/CADE71800751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94adf20229b308a63b111261f9a883b878477b27b58d996bf66bc2c60734e0ac. 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/CADE71800761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18684b033a79b449b5bc70686d047b13daf9bb09711630eb4db7ae5be29dd31. 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/QM6MZ1753103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47ebf6ec79765d933befa439db5457da4ed094970308b008c12d35aee8a246. 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/QM6MZ1753104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa909684f0bed6954424ad938e3a523e5f50ecf24063260ae80e284f0bab3bed7. 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/QM6MZ1753109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7220d63e115892d16c229916f85f4b9dbf6cf2db5ab953798bee2382aa13b61b. 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/GBBKS1400158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19085e3764c6af56af2a98edf2cfee8776b8b39fab659c9ecac80ed6edf30ba3. 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/GBBKS1400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0734407a664502ca9184cae63e6e3152bcd2a29c28114c7be5fa4cd6cf4973e. 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/GBBKS1400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962e388c4e7d83342954b533e673b26dc650f692c86eb97f0ce3b7d0c8a1194f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBKS1400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb954fbf0068b6ec95790e1de88cc80882b08986c7743abfd98c217abc9cfd5. 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/GBBKS1400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48267287771a6e2f1dea5222be044972f3b2c84efd58523e3c8a6cb8b41f3d. 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/GBBKS1400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6505d048698ecb8da2602150803eb77013be5cc0a32edfd05365a1db1212c3de. 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/GBBKS1400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf442d20362bd284a22605bd2d40017372b2d004ddd228604114002d2c55fe072. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBKS1400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ac7dbd5e74adba58f55468285f8196910829cf5b0899cd09bdd5a5430a714. 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/GBBKS1400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c6a6f63ac824e9c2b889c97ab364428356ca2f7bb7642329929c2ab178d1b3. 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/GBBKS1400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9283caf69060c213b2d2f881ef4555a697677f4db7cf9c7d441c2988b9e26f. 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/QZDA61882434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf039265a0073a7466d1f2a15d4455d381a0803044ecccd8063c615787bc6ddd. 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/QZDA61882435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2acbd1f6133387c4dc5c306c64bf655e623040cd797e2cf3dde3c2b00ba608. 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/USHTV1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe925c27dde655ef6b863c33cea36b36d8e0c5a56fbf8ab9bfc2e725850b9772. 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/USHTV1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f67beaa88a1704b551bd6ef452965dc0791b98106eaadd7cb34de4da873d95. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHTV1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aaf7f14c9d38d43f7a348e6c247979e942da81d2fb7330e8f16bd521ecea86. 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/USHTV1200014.