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 0xe72ab84bb4fb0cf1ff584253873ed3db74f992df523693db733efa85239aca50. 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/342afe2e-8453-493b-8ff9-7a2cca56a482.json and https://artists.proofprofile.net/proofs/artist/342afe2e-8453-493b-8ff9-7a2cca56a482.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 0x79408cbb7129f11667c0fc52260425df0e67f7a7443836db6181505c1d1dd4a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJX2082378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79408cbb7129f11667c0fc52260425df0e67f7a7443836db6181505c1d1dd4a8. 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/QZNJX2082378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a94af7cb8e304425183039d182a6b830b8c19c9c353e8def61b8cfe09c4b83. 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/QZNJX2082379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be00adc6344660a3f56bf5b048166230f2f10f7e1d985ad256d1d7a1731ec19. 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/QZNJX2082380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7403614de0aad97ab896a1aefcba38a7a42f0975730bf486c07399e120c8beba. 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/QZNJX2035344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d12bd927f1f68702298eb6056158cfe4f9329dc7089024603603545652fcba. 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/QZNJX2082382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a561d073aa08f09ed7aaa86a88f7a3b4a66b270af045d07a683421bc38a19d3. 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/QZNJX2082383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf304223f43ba459d7736afdcaa2aa29f458d33cc267b2835c919ba18c533e9a9. 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/QZNJX2082384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d12bd927f1f68702298eb6056158cfe4f9329dc7089024603603545652fcba. 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/QZNJX2082382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91446b13e586bc60e903454a44858dc572c93894b85c71a8fb5ef4a3b4d95b67. 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/ARIXB2300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33196698aef6fb4e9c8556b562e0dffd5637c071a7fb478a9a157be61dbed113. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARIXB2309156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33196698aef6fb4e9c8556b562e0dffd5637c071a7fb478a9a157be61dbed113. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ARIXB2309156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a3db6399168846ed2cf42f3ff4cd9c459cc8a19b6473c1df6624beeaf5341. 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/ARIXB2311135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a3db6399168846ed2cf42f3ff4cd9c459cc8a19b6473c1df6624beeaf5341. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/ARIXB2311135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba1019a836982982e16ae7d9156172f31685f9d6880c888e73b90bb28c5952. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARIXB2313586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe030bf76bf0fcba8f029866569fc293bd264fdf68f478c72570ecf7da963968b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BK4DA2407484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d166ac1a547cafe0861fb3816448092299466a45911eb512e2eb67f67746f4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARIXB2403004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4257d41d59331ef49cdab722831a2569328a3e5de83999c4eaed9fb9890c5f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARIXB2402241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1a3803191c528de125ef571df2032827adcb0d9450513997b3e118cb65496a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARIXB2402791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461bb06240f79c59937410dbdac093a11e98ef55e1e3e58164a6f9307ebf6797. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARIXB2402915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d63be2b87bb1386bbea632071a4ae82f7094c2b56da82361752b1e438e9a24c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:16Z), 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/ARIXB2403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4257d41d59331ef49cdab722831a2569328a3e5de83999c4eaed9fb9890c5f. 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/ARIXB2402241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1a3803191c528de125ef571df2032827adcb0d9450513997b3e118cb65496a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARIXB2402791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90059ff6d7db36cfc496452b26235a64239226c32b393b6845e643d37f11f703. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ARIXB2403005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe579c974959c099e9dd06429fd7fe4adbdfeec11bd54215d455669d319ce123. 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/ARIXB2403008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b019924a7b119bbe308bcd34226e7bd518220198c8b5ef54df3566fd0c9b2f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ARIXB2403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4257d41d59331ef49cdab722831a2569328a3e5de83999c4eaed9fb9890c5f. 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/ARIXB2402241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461bb06240f79c59937410dbdac093a11e98ef55e1e3e58164a6f9307ebf6797. 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/ARIXB2402915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97412ff7c184c9fe8f1dd8bdaa9cee5d080e6a993074efbd938963675e752ecb. 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/ARIXB2500722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97412ff7c184c9fe8f1dd8bdaa9cee5d080e6a993074efbd938963675e752ecb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ARIXB2500722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952b9d812845bc4c6eb649628588027a91ff7472c845bb700f47e960e9da372e. 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/QZTVM2590426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34814a1d788fc7ebabdd576b5968f58070bac06efb49fb4ace9bd71b52bb150. 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/QZGLM2236955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd113563df37cf4c5222e9a33678ebd9636af7444ed387c36d1f754994af559fc. 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/QZMZ92021274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11086349625b2a473e60652ce513a8c0bc7ba944aab08bdc07bfbc55977691f2. 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/BK4DA2308883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5058be4a2ea41d0b3a1b82c223cbec2cc8f7739356804e6c7e45a7ba84f07c9. 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/QZNJW2169942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d795a68f63d6447abbdf8811d3320fd0ffd4e3424fba9d4e0837eb0b8a70d3. 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/QZNJW2169944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f5f5ccbad6406fb845f74774c5502b4b91cb9a80aa4c7ef1e675b919efaace. 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/QZNJW2169945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388ccc4901c5a29a7d2bdc15cea2b0ebf55f04bec89c878288cb813971617a41. 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/QZNJW2169946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b92395d4c5c819ccc1bdc005c0f26f2ef4f475a2ba8b8d555218907d0a360a. 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/QZNJW2169947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fee4f0c1c7d0b09ddac20543a5534cfb713d07aa1945090a7e0e10cc4741602. 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/QZGLS2212675.