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 0x2962911c49f31cce27d68b793659f1b47e8a09f813539a10b723a7b04088af57. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3075a9b-d47f-4296-8ed3-230a77c01e73.json and https://artists.proofprofile.net/proofs/artist/b3075a9b-d47f-4296-8ed3-230a77c01e73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Good Night, Sleep Tight: Lullabies For A Peaceful Sleep
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 0xda6e73305603634bef549d6ae550a25af41525791ab27b16adaadcd3ebcc1004. 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/US3DF2261694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1a5d57a85e1cd86152f4a12af13c52b803c7f6a301ce6843118add0abd28e. 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/US3DF2246327.
Somewhere Over The Rainbow (Lullaby Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2074c4989792262ec9cf9a960bfcde74c53eb7c9f00bf136fbd8bfb76481d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMANG2249314.
That Silent Night (Lullaby Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26c3e283048793895cb57623e31fa23defc8255bf97fea0c24c37f57ff57473. 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/QM3DF2255866.
Kingdom of Dreams (Lullaby Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8569c6d721105cf7fa118d826ff1cf00c7a9af281d76cca4a2e6d76ad2e2e4. 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/QM3DF2225259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882ae9c507df41dd677558be468a46f3a414c6525f86566ccdc2e36d71f34e4f. 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/QM3DF2225258.
Chim Chim Cher-ee (Lullaby Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6e73305603634bef549d6ae550a25af41525791ab27b16adaadcd3ebcc1004. 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/US3DF2261694.
Hush-a-Bye Baby On The Tree Top (Lullaby Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1a5d57a85e1cd86152f4a12af13c52b803c7f6a301ce6843118add0abd28e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/US3DF2246327.