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 0xaef9316cf48c8c7489fd2f129f485a6ac8f8ccab02ac3f81fd7d753d043be0f2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ae769ba-4528-4aa3-8d67-295585a24671.json and https://artists.proofprofile.net/proofs/artist/8ae769ba-4528-4aa3-8d67-295585a24671.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 0xcd190cb32d9c74774f97888d47c8c3f2deea37a65b70fa2ddf10476db2abe65d. 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/QZFZ62237846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd06c667aa04aa29ef57e43d75a756c866d878c4f0e66aaeb08e6b637557fa7. 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/QZES82219044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcd8f282243294de65b2dae9380098217edafe76c99c88701c2e54509bcddce. 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/QZES82281196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8bb7d74f9673ee5887b491a43dcfa833353e7a4c59874c7a5195ed3956a695. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZES92279101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15e7aceeb6cdec9c0aa8aa95c40490311df667a58b504ce23fb2cf8b5ac9bb1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMER2240591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf396dbf47ca773f3c4d24416d28e389af2265f4a0a46768e5f9999e86aa5f. 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/QZMER2240593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba70313be39282cf0e77828e9908cd8870417736da04278183f3eb4b9df49a2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMER2240594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25ce0f99eb3c2968e275fff2444bb001639475b90d11cb22fc1c2cfa97f041. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:21Z), 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/QZTBF2343387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfa5fa324b74dd43a7425a3f84a661d7739ee96f8c9d27d285d00ad9bbdada7. 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/QZTBF2343389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15d12d8716c804df5415904ef686d6ceffbd3809b0ce2af9d07c1285a63824. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZDA82457702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f2fc4cdd4dc030b85b7379a19b5b2f94333b57e37fd2675c5445c63971c1ba. 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/QZK6P2409802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26434603e31172ae1edd5bfc04e068223609972beeae3d5a2312af95272f78e9. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6P2409804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a23151228ee69a4c9c9e399e4ff7f9ec8951b611da60f65616d02f0c2781cf. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:21:46Z), 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/QZK6P2409805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57244ecbf7dbe9b40bf88f248ff614e659d24080ee3735b8700c4831a65ca74f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZZ7X2436834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7842beb7eb007ccf1dcf7b3b16e7d1c657966a30ec4283296d0a0e86e397221. 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/QZHNA2575582.