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 0x47f4211921375d0656be5e07c5b5d65a71e9760451f007cd81144a223dee71fb. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2b25c6d-55a3-454e-a3d7-df0e6b4263c9.json and https://artists.proofprofile.net/proofs/artist/a2b25c6d-55a3-454e-a3d7-df0e6b4263c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Achyutam Keshavam Krishna Damodaram (Krishna Bhajan)
Ami Kon Pothe Je Choli - Sagarika Bhattacherjee
Coffee House Er Shei Adda - Sagarika Bhattacherjee
Ami Cheye Cheye Dekhi Saradin - Sagarika Bhattacherjee
E Betha Ki Je Betha - Sagarika Bhattacherjee
Ke Jaane Ko Ghonta - Sagarika Bhattacherjee
Oliro Kotha Shune - Sagarika Bhattacherjee
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 0xfdd4b3dcc27e78093d75a3096a4044d85230056e30f3d1e1561d941123de0837. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/INH102302900.
Prithibi Bodle Gechhe - Sagarika Bhattacherjee
Surjo Dobar Pala - Sagarika Bhattacherjee
Tum Na Jane Kis Jahan Men Kho Gaye (Reprise)