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 0xc7ad38bf509f15c5a5ece85c0af33b86c19d716def9bcdc6590b660b8b66101f. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/780e078a-632a-47df-b742-d480bb323470.json and https://artists.proofprofile.net/proofs/artist/780e078a-632a-47df-b742-d480bb323470.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 0x6fe492e0a574b004f72166b204dde3b6833cb99770950be76d33fc024fcc278c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFL2418099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb677b8945e24256029f1cc45c9e941e0933a56fea7d9df529f662d4329c255. 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/QZWFM2448885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25460a48761feffe2a65f3eb367dda8a76548e18109e2aaec95f675ccba438d4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZZ792468635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fb03e5073d84678139beaef38ab5f03b5b6fad7c9fefd5892f9979454aa174. 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/QZZ792471852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab65e190aba49a0beab842e10e1e3c219637abf5b15a84db5dbfa0b838864f44. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZZ7P2472604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6816a7cacd673c662e2f6bb88c5aaa4364f3c9fe224b3568fc2acf55af825ec7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:10Z), 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/QZFZ42564092.
Manny Captain x JLizz x J15 - Beef Ain't Expensive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc041197b2b31d367552718806ab5295ec00a0097f5900b9adc5bb4342e6219. 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/QZHNC2551239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2354e669e8981125a1b1b28f6e3d6c7d28e8eb61544a17e3eaa6e9e9dee80fbd. 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/QZK6L2577868.
BusyGettingLizzy - Free The Hulme & Moss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc682268f5c360bbbbaa08d7787a3e3cf37dd7e6782d7f1812c3230abee7a83c5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:55Z), 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/QZMEP2535055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6684da221a8c3941d2e72d5b4923ec02419f90ef92f00e9afbc95d8b80a4aa82. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:21:37Z), 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/QZTAS2570848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf838e34303466cf05fd3062ef9b34f7e3ed61feb799909b8b89e2d414b6f56ab. 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/QZTAS2570849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b814bc50f680cad5d518db4771570b966fe082bbf0c588414a8bce47c317f32. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:52:10Z), 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/QZTAS2570851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5fb97993546e8f963be1b413990bca023422e74e38b5d41bbbde828df08d84. 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/QZTAS2570852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c015a8338cff008bf940bea1afed3bf7d6bb4e47aa592e83a1ab059229dca6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:21Z), 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/QZWFK2505375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca752597bd349f3dd2270d467a070a3250636d3aaf74f9436f68812f29a2252. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:08Z), 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/QT3FA2537922.