1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x65d347e1132b0d71c84dda871874f4bea0a02d21c8bb249a00c1d82a03e9a81b. 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/0b8a54c1-2590-4f99-9204-3d61123dcc52.json and https://artists.proofprofile.net/proofs/artist/0b8a54c1-2590-4f99-9204-3d61123dcc52.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 → block OTSBitcoinBlock must exist at that height 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 0x1cb3e35672150c32479e648ff894417cd80d3bbf90acd91a73310b6d2a5bf1a7. 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/QZ5AB1617761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370221f5627b038b26d8d712c3ddeb5d3f5f962ed650ab935dfce03f407492bb. 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/QZ5AB1617764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbac80b31d960fabfa954f2e2f20293e33820af4d3c5c68c4034499d168aa04b. 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/QZ5AB1617758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e9d4b9159984576367fa913e1fc86d724b01293a3000922b3c931812140877. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZ5AB1647174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5786ed0fee9a31d4a374ad4822e70d2d6893667f3ef4762275e89ffc331a9. 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/QZ5AB1741491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ac7fb145bac7ab6bff4605de7f877086baa06040cbf848b23dbec9022f386a. 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/QZ5AB1888641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3976e89ce4dbe6c200e93783dd3836b063f0f9bdbdd75c74e0ea245dc87d44. 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/QZ5AB1914531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c033a0af86df1fae27770e20c2beac5e8e68c8393346c311d174bf71f9456b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ5AB1926388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc089f30d065a122fb17eb226e848f5faf9b970e5cd6698d348e63214058f5494. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ5AB1926389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8774ceb4d060dbad39ab39a7d60c0a4251cbeb5ce7b268674d593c0683094497. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:17Z), 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/QZ5AB1958452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a02839e0553829c866260ae1833faa80401a5e41748c81c3f86a9c08b349e1c. 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/QZ5AB1958457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3492a7f4eb3ad16eda65bfba38c8dc96167a8c9984d2ed9e19db6ef1cc0e9bc. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BX9HF2400046.