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 0x4e878c2d23ecea9d94885410299a7de326dc0feb8daa014824bedc36b486566b. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee1875b5-7dd1-4937-a2ec-ef187d1912aa.json and https://artists.proofprofile.net/proofs/artist/ee1875b5-7dd1-4937-a2ec-ef187d1912aa.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 0xd63862e4d82273fe8448e8a9b977903fd220fe1414d1185e545b156115c7a030. 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/ITMDU2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef742046624377df98f0138433bef3e7f20878a81a3197b5fe33661939fc1fc4. 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/ITMDU2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db74c1e5ab156d6f86573350ba1bee35852954b6c86c36277b25184f20ef42. 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/ITMDU2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa936f3afe618263117605644836d1bc535df10405293624a2d291f8b226d2132. 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/ITMDU2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fad5510785c0b9d4008128fc64a420a083893e54daeb84d9962d5abddfbfd8. 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/ITMDU2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93ce6bfde028e6d8ef61b2799ed99431db9e6c891b94dbe39e5beaa78280a6. 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/ITMDU2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fad5510785c0b9d4008128fc64a420a083893e54daeb84d9962d5abddfbfd8. 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/ITMDU2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bafdf2e3be1ac92e4bf3097a664e7728f35f2fbea08fc837ad32c1e5db4e08. 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/ITMDU2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb14048e9e8feff2713795b45df054ae440b941d7fed75aaf0783b64e4207f0. 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/ITMDU2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93ce6bfde028e6d8ef61b2799ed99431db9e6c891b94dbe39e5beaa78280a6. 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/ITMDU2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bd4e485f1213d21c30cc6ec9fc8e37100a8ee6120ccfaa6535ebddd17b729. 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/ITMDU2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a763df95b689cb839b9d55658564181e706b75b0854ee6de9732707b1c56c04. 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/ITMDU2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70bcd3192a7683be0391d0b356b2e9443eb4ab0d74f0cc95c8369dc5c8f196e. 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/ITMDU2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137f0a50a0ccda2323e7bf588f0d0c0b9b24cc42ad81a1b8a167e9f708e4716. 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/ITMDU2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe311b1984df473683ad168930e9becca74968861c7573af5113ccdb2df0cfbd. 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/ITMDU2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd1df6dd53e1953b731d05c4595f006460bc7a6c1da9f79f638ccf536d703f. 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/ITMDU2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069080442dd6cac407c7ef168bb04edc0c7191e25d56c703dddc21e65397a77c. 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/ITMDU2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db84961f40465f122b1f81f0927a96641f140cbd6469848f39c1b6ef374167f. 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/QZES72403768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a06ec12ead70b8aff42627a5ac7c3a89cce08c763f7d469e66da41adc310d. 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/USCGH2490948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c46ffd007f05aad27ab2e965f67bcb48c6a3055aac7c34b3c6816934b007b56. 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/USCGH2490950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2ade01f102c028027d0f955a31fccb2324ce496b7f75267fff4ff1945f7bea. 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/USCGH2490958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68de7664526549e4866e111479bb4522311179310cb406c27b5f6e86a7ac9df7. 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/USCGH2490959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff58785b4be36cf0001c15ab5871a075938c1c30c6d624a091d09b5c1816be88. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:19Z), 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/USCGH2490954.