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 0x7e2eac76d79c56cdc560adac09816e87e7f969b56359d1fccff04865e55247a6. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/528dd360-b308-47aa-8551-dac68b4be7b9.json and https://artists.proofprofile.net/proofs/artist/528dd360-b308-47aa-8551-dac68b4be7b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Challenge (Original Motion Picture Soundtrack)
Loha Pahalwan (Original Motion Picture Soundtrack)
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 0x1e2d8404e54ad322d00b51a4b8a71c0c71a74a912bf207726c149e7c609d13f4. 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/INW131814827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ca1768911d3af7c07768e2a2e97e90d4650d0c275d3e85161d95e26440c8cd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/INW131814828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f136b868b4df70fb1134097c333b0eeabef3cdcacdf7d437046b6b43d662f05. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/INW131814829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114cadf3f6e4b7cd9f97c88de5d722ca2c5f2249640f1e9782b2d588cd3f51b4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:41Z), 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/INW131814831.
Jung Siyasat Ke (Original Motion Picture Soundtrack)
Jai Hind (Original Motion Picture Soundtrack)
Bhojpuri Gaana Par Jo Dance Na Kiya (From "Sher Singh")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350345073ba81368ab50e0b2775980f437a5dc305c7a4aa89077a6eaefcbf828. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/INZ031406344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230ee6e36389665dc22508cf09e9e0f443f9d2a04097ba840f3f642b03acb2b2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/INE152200081.
Gori Aaja Karke Bahana Bharsaye Bhujawe Dana
Gori aaja Karke Bahana Bharsaayi Bhujawe Daana
Pisal Bhang A Raja (From "Har Har Gange")
Palki Niyan Aaj Galabu Ka (From "Tera Mera Tashan")