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 0x971135c170de266e031c3ae6a232a0dc9dace275ce73d54191709f9486f9b7e5. 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/4ed55be9-d4dd-4ccb-881a-452e105264aa.json and https://artists.proofprofile.net/proofs/artist/4ed55be9-d4dd-4ccb-881a-452e105264aa.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 0x9e08479e5554b55cdbbb36f0f820d3f6bcd590946f5e2d7b1f0e847540f34801. 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/QZDA81859582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc76d8ec529180bea4b75afa02fe0282e8433af1fbc039fed24be75976ccd715. 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/GBKQU1981928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410c1beb4e59dff20397be13e5eab336453cb9cf19797ab905dc0c9fbfb6c81c. 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/GBKQU1981930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b42c51cd0c528e74dfb7647ff99054404105ea934afe59b79ebec8ecd27d5. 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/QZFP52463699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd423eecfeba32f7bdb33ad1eb8c4664de7cb7ff00d2aabbb5ca2bf01bcd17f1. 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/GBEWA2307254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f48aa0f59d65ebb9427c9ff1c38f1edd4e4e1524bce700b89833dba7964ecd1. 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/USA2P2316070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bdd383be1c1f066d4c679f15f4c155a4df615d8ce0566041c0d0e5024da7e8. 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/QZTBA2229410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554f79d5b426d674873183c8cd47c8559f350cdd73bf07202e850bee7a4e8255. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM42K2286509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5eb9ea41882870f65a91eb09c090fcd3673e26706111a4e3ec26bd1e887d13. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:27:32Z), 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/QM42K2206954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554f79d5b426d674873183c8cd47c8559f350cdd73bf07202e850bee7a4e8255. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM42K2286509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bda47cb19eb650c316a9a9d1c5a12a8bd3f3be93ec72b536b3b3eb6cc37dcf. 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/QZHCR2100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bee87b1faf4617688eaaafc2159a5c356f65d415de29b4bd0d02003d62c48e. 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/QZ5FN2100507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ccc2086b152679df4d1da43e381167986fd389e3d3060ba000847ce4d31df. 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/USA2P2032930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889481313f373f98c560bf26a33e991874cac6c35f7b32abaa2f81dd280926ce. 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/GBWUL2051371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88fbcb2840f6fa7cb70a93f44b7586e976eba8ba6c66e5757f69cd2a4cce4cf. 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/QZDA41866712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb82d5e4061376c1eeab95d060c9345a433520e42977bbbe66e14ad474d61b3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ9Y21738659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aab819778cf2b20f2a883ae02a8b8b1a3e772277fdd909c74f961ba29f6a63. 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/GBSMU4183393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f4643517981897a3183a3eeda33ad40756104d2cb071c71a5af79aab1a283. 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/GBSMU4183394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5167d5b69da7817ee71d77f9514b7433992a4c9d7adc9156ae9fbd173dc639d1. 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/QM4DW1781453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a00e92a542f2e9eda004387a6e1ee70e84b17548ec19d883e2341632b16eee. 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/QM4DW1781482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23605f165e0d9f684a5e854f4b2681478639fb6f643a1dc7688ffb9732d2ef3a. 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/USA2P1928864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332ce6993fd51fa50bebe45a9f38b773c1cc9e5fb5db1dffdffee353a28aa55. 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/QM42K1915044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b47de25cdb9b33130cd6119a51e0cb99c257a3fa5ff21c44e377490081cfd. 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/QM42K1801057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d51244be73cc769d93920525640730346596fde8805ad9a65f2d87d39efe6. 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/USUS12100476.