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 0x3820ed4f100bc6bba048dee91b9beb52b67f8c79b6c94d2c23334d806462b8d1. 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/7316e092-a07e-4fd7-81f3-391c50b52871.json and https://artists.proofprofile.net/proofs/artist/7316e092-a07e-4fd7-81f3-391c50b52871.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 0x7ca726a8bb698d4ea9201bcbe614cec9a77b41e713be71087c5ab2ea8c8f9d88. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM4DW1700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274b107f35dac7fb3babce6e0d96f97ca98a079bc8a863957f5f5f0f69d5f6cf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM4DW1700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625b87b8371fc69724a34d4133be6d350c1d84335e6a7599fb1d8a471e976e8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:48Z), 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/QM4DW1700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ef9225c435e29d46ea6f57d2b0be6ac2f8be3fc8f991aafab02f86fee2cd4. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QM4DW1700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca726a8bb698d4ea9201bcbe614cec9a77b41e713be71087c5ab2ea8c8f9d88. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM4DW1700336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274b107f35dac7fb3babce6e0d96f97ca98a079bc8a863957f5f5f0f69d5f6cf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM4DW1700337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625b87b8371fc69724a34d4133be6d350c1d84335e6a7599fb1d8a471e976e8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:13Z), 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/QM4DW1700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450ef9225c435e29d46ea6f57d2b0be6ac2f8be3fc8f991aafab02f86fee2cd4. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:05Z), 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/QM4DW1700339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa518128a846e1350ae8b6a22d070277e53e06a06735e4bd8d65dafca621fd3ea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZANL1702191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcd01a2d96e2f1ff29dc81e6827ef52bd06dc7035461fa52705c81bd1b56d9e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:57:53Z), 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/QZBRF1859784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbd66befd6a4a54dd46c955cbe4a6d26f3a3d721e19bef64a9e853f4c32ea20. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:35Z), 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/QZB4J1874735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb120910a769ab39a7c28412f5b01d4c38a472ba9ef25a7c48516ed42bc63ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UST8K1894167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb120910a769ab39a7c28412f5b01d4c38a472ba9ef25a7c48516ed42bc63ca. 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/UST8K1894167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b421b98577342d4164162cee49eb7c108b00dca8f7d8ba6e51a9da1c1a1b1. 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/QZFZ31968115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650bac4664d3da317c8754f20e2c7e179574574e86fa96a09b80c002d2aa716f. 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/QZES82051978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650bac4664d3da317c8754f20e2c7e179574574e86fa96a09b80c002d2aa716f. 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/QZES82051978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee1498498b3243d22321754a28a31257929b1d0227dd253805c037d15d1738. 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/QZNWZ2037228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee1498498b3243d22321754a28a31257929b1d0227dd253805c037d15d1738. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWZ2037228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b99c00efe865443d5b9f987e19cbfa3886193f02fe66d14683c34df1e9860. 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/QZMEQ2125602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b99c00efe865443d5b9f987e19cbfa3886193f02fe66d14683c34df1e9860. 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/QZMEQ2125602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d55315b997bd36307edeba7d84893e2d27687e0ca4e7638a5e2bdc2caf554d. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZRP42135701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8b4a2aa57e0f134b0dd4f6338a01501670a547838d988a1a1157c25217dc00. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES62206060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8b4a2aa57e0f134b0dd4f6338a01501670a547838d988a1a1157c25217dc00. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:02:29Z), 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/QZES62206060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403a1840204ed9ece74fba2f8f86b41c1d331e8f9cc958854ca28a4be27325ba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN32293872.