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 0xa43c2e049308d786417ada3f853787a1b2403527e3e48e8b249833bcfc6e40d9. 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/75184c57-0ee9-410e-8567-00a24d974a73.json and https://artists.proofprofile.net/proofs/artist/75184c57-0ee9-410e-8567-00a24d974a73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Iniyum Chollathoru Kavitha (Female Version)
Kaathirippoo Kanmani (Recreated Version)
Kaathirippoo Kanmani - Recreated Version
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 0x99b21f4299eb827e1bcf07af59a387ca74d9661969cbdb99450d6cd18fc9aa5d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:19Z), 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/INS322105372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb439e3db32274f6b32fcfa3a5b18ef74520cf12b94c4da35ad54015b6ab80da4. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZRP42191240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee25c1833476e4d08f45ce0ba0fad91e34d1ec8142bb009d71ef86c3259d80f2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:31Z), 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/QZRP42191251.
Thoongum Podhu-Edm Revisited (From "Cicada")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf236786d5eaed8e91ff33b6c68d033562b5524005307f006ecc00c4cacaa8fc6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/INS182302904.
Thoongum Podhu Un Ngyabagam (From "Cicada")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2624e0858922fbd0e8cab8c169f64d5364ceb4705c9acf3bad49843431cd115. 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/INS182302664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c077b0ff97c60c6ecbe30fba2e833af7dc048106ebfa077e22ca1d69b153fb0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/INS182302221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c077b0ff97c60c6ecbe30fba2e833af7dc048106ebfa077e22ca1d69b153fb0. 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/INS182302221.
Fukri (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1d3adad30343f7f5799cdc586f454bdb71ac9dc6bfefab8973af4de02f84d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INA981700003.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch