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 0xdbcede675f740fc49d3d3d50e548f515d48a68a2ce2fd7c7255da6710e6c0d69. 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/f76f4be4-65d6-48be-ad80-ccf01d475536.json and https://artists.proofprofile.net/proofs/artist/f76f4be4-65d6-48be-ad80-ccf01d475536.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 0x4879d25f4fcf7b9d2f722e3716fd154e099e8614d0320f4dc8d2a2671c462641. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX8LD2256285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5200ff3158673ad59851c8249256e6671664309d1fcaa3571ac97e3404f641. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GX89G2333545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f3d6b512f658d66ef469e0dbc6d107c0388f50a0dfc124c3a0c86176850688. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX89G2368956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb47a6e27cd5409b01bca284a177a61d28c7d12065a536544c14c5a35246b9d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GX89G2359747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc219f996fa5b03ec9f514064e7a33d7a0f5f5058c51d15ee169ea84180eb6af4. 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/GX8KD2320032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ae2d113021165e41fdd30f0df9a79cd1fcf5b0a784091190ab5b3b7688bc27. 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/USANG2284505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee62cab6d1cc659828253ad623752a31f39fbb3ddcb34bc0deb4f6733d5beec2. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USANG2261565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0121d0b9c87e20b9bb81dcaa8d62afc53287efe3b1d853b4c365731cd919438d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG2298128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3343e16a0cee0bf275130ef3ff938f733bf3e57e1f3bca4fc90d270615c71d7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX3HH2359856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646023b768649b2d695300fd87611aaf3037ece3c2f591dc9b5e5388e048c22b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM3DF2224454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf14c52948252e2c62b81cf467fff8bb58ab0e60cada38951dc90331854fefc7. 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/QM3DF2224455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3e7f7f3d3f4908a3074b2584ea8b06cac988b12d2c6f4062f61468d306ff2f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM3DF2224457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bdf0d8ecff99fc42073720209d368c5f666b1e597b18228fb416ee3f06819c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX4R52338607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f67a89c1d573e3a746af29b8d6b82b01307d75d861fb7600e87f2b830cea76d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2402516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0903dd6caabdd944387c916dbf83c3c9486ccb27b0010cf40aad4d7e02bdd1c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2439244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4061fec472b77a660a0965db32054f4ab2b28fd7ae373c41e18b211bb1e10203. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:20Z), 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/GX8LE2462752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5fe40c7560cc5b4e0cdb4e0e4969780f643f0f205636bc22e3b3ceb7531ab1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/US3DF2478781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098bb0bbc6633760fd3b6c7f3f5dbdbb3bb185838f284422173235e591efe3c3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US3DF2491513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373697718807de8a80511ce5bb4ba01c45f65226c0103629ba8836ced08c3159. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2531627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920728e8d7655d89e99a4efe0b459fe940019770dce16d50631fff632d7dd882. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:39:34Z), 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/US3DF2573247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5182ac6c58221ec8e769d7b1a7240f0d061cd954208b6764731f9b463a0f33a9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US3DF2571153.