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 0xd11ceb9427bb1b419cae15e85f3d9355efb640bf2138a778f9851603b7e5e07f. 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/38043510-f8eb-49b1-9c74-1eb82263f361.json and https://artists.proofprofile.net/proofs/artist/38043510-f8eb-49b1-9c74-1eb82263f361.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 0xd2d06d53f79ccfc2498e99a2efe655c742814f3cfb8c5ac54d4a17e3bb21ca46. 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/QM24S1817118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f1c630ad56307b93589d0edaa5a461118172f823577b15ac424607523022a4. 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/QZTAX2302394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabde6610a061c266b38768245199332d4ce4134077a2d426519f678d5553b2eb. 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/QZTAX2302396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610604d896a0f367d8b40e8db7b6708bcd8a293c65f4a1111029a5880d129cf. 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/QZTAX2302397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9418d65dea28c2e8054aa5e002c72b546e66747a193f9a4d740e718b6ebb62f4. 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/QZTAX2302399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c76cfa68a333cb6e4b76711757b3237df27775cd6c620767fded287f06a15a. 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/QZTAX2302403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd923e6442937f38f6304261661c59996cf3bd4441a940e16b14eda2088d657. 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/QZTAX2302404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c60a9fd4b50eecf67fae10452f51717f696f890b160996c125f0f1ffaf73a85. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTAX2302395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be2e80799ef3c9a2398439467aa2515215c3f7e3b2fc4e2ffbb2fee1fcac27f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZK6Q2319722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e47cfd5c4ba8e5ffd2f605a276755e0773a1adbf80b8f51aee25eba13341e9. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZTAX2302401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab54d8c3c5e738ca5afe22dc72217e89773180d79f35f5f5f5f9cfe497d8ca. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZTAX2302402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac3d9d4428e53790e016da0e825e913abe7a20c2191951f11ae8100f3a6e35. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZTAX2302407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9413ce71cf4c8966b628c51c013235692e3f315523fada4b15161f180d56e2e. 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/QZPLS2172386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26166f7eeb0069b5387bcf9673975910739b941415966d36818c7e04950f6b3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZPLS2172385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda47fe674ea31c4999f9633efd8eb566110983d2ec738aa1d3335be32d22ad0e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZPLS2172387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0af7162ee97d7cbda0ac4a81899e7f67754cbfb878cce8a4bc18c10f3b248f3. 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/QZHN52058253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f094831491465e8ba4550dacf5ad104f44321240c0df1465a0a12f40b08d4d9. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZES62072378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9250ac91ef4cb99bbcfad02d01c18d228ea78bf3fd58b431ac90b5fd19b13b. 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/QZHN51934112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2008ced982ef494ba481d5dfb94687d9ead0301c379382063d996900d6e05a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZHN51934110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a47f0740c2c1cae623a747c98f8253b9bb52b05aa3e8eedb95b5b6c85743ec0. 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/QM24S1802025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca84ecf463c1599bba021b430a6cc75babd4761380f63356755aa0dd204e4ba. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM24S1802024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47ef173683f7ae532ab8b3248077181695227ce26454778b6d0d6c9d8fb9515. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM24S1801191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e2397d2bb511f5d8b8f33b4e66ba8d4a4bba38b90544c0c23177cfdfa61c7. 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/QZAKB2321322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df36d000adf603fc8a15685d110b184c7dc10fb3803fd1b46c0176ab81c3c5f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWX2043357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558b10f15d6705df88e98af228dc33967810cd2f4ae058554da36a4a804f6c00. 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/CA5KR2231824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2717195aedce486fac853101790f8dfdd88ea096954f10162c1c4bea35692e74. 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/CA5KR2231835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541cb02b2fcab0bf00a9e430cd1d09589211daea7857aee239eaee93e8676558. 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/QZK6P2199249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124659a98233bdce61fba39b4bdc77a7a5d6a6147d9863ff2f7a7f5833357975. 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/CAHQJ1883732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f225db2574600eccb6a0e49db7a577069f55158efa8a8380236f91182b8dc8. 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/CAHQJ1883737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2235d75762e73d6d308a96f2ff3e5e97ce205efdc8ade2161dcca1e295d47496. 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/CA5KR2335595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db3d2b706f1593c8f98755093fee386e6902d127d6ab37b295109fe54910e35. 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/QZK6P2199232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf001d890df29ccf69a8c432458a4487256334cdefa5de1114e2b27242215eb8c. 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/QZK6P2199234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee7f738993dcba09bbdf2781448f358b389e893cf120dfc56ab015608bfb5e. 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/QZK6P2199239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390e9bce88e645f6727ab8f7b9f921f2ba2a276cac72c009467271f567601102. 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/QZK6P2199237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca3b79be5a31836c41a3fb26799c65866fa0d194558ce6d61942cd6d9298728. 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/QZK6P1921748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18fb4197ee35adedd0a8fe60f9846ecab7bd70922d36c5aafe9eec9f0171b4b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6P1921752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f9e4045d6155335ae51bd8e96b7136cd2e6e20767d8fdcfdd9e891715a00da. 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/QZK6P2199246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1105359cf24670371a718eb53342fe07d589bc8446e5c3aa4ef926f99cb33b18. 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/QZK6P2199251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9865f9b237ae9432259ba01cc392956dffefc407139583a77d65d6f9df6e9962. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZK6P2199235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a0f76c7a3932c878c8bc682c67d7610e86fd69addebb8059a0cfc65997b05. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QZK6P2199244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2a0ef147cc4ba1da93a688e9601e92bfb4b6939389fe5c3ce5912253d55064. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZK6P2199252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a980be974186b36dc1b13193353ea9aa3a1814ad3cd0684c0075c6952b27c8. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZK6P2199257.