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 0xd884eda21f852071e6b36b52ec805c5ee5964617b3c1baf7cad7848dc84ddfde. 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/3a8e5771-fe78-42e0-bd61-faf006e2f2e1.json and https://artists.proofprofile.net/proofs/artist/3a8e5771-fe78-42e0-bd61-faf006e2f2e1.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 0x86155f6695ecdaa99c457d1be6dfd5fdf59155cf3c31de3df6e61121aee94dbc. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/INN242205938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd8a79f20ca7c4306a1ef35e4381b8e8515d542eb0bf9cf2d9b173454ba0ed. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/INT132200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f04c65194ea0a514ed39746dbcaf497d90e849df4c4440f4e7ed0bc570cb753. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:11Z), 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/ING212328158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34c3cad6153262de4528cf04179962b2b7a4d079ddab4acf4be9b0fb4bfeff0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/INS182302354.
Maa Je Amar Doshobhuja (From "Oishanee")
Ami Kolkatar Rossogolla (Recreated Version)
Bideshini Radha (From "Tobuo Bhalobashi") - Single
Cadbury Dairy Milk Gaane Mishti Utsabe Rasabanga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8bb6b949107de617c8a56e84b405e96ebc3862f27e621bc16e71862de68a50. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAIA2423073.