Hema Sardesai is an Indian playback singer and lyricist based in Goa, India. Born in Bombay, Maharashtra, she shot to fame in the 1990s with songs from movies like Sapnay, Soldier, Biwi No.1 and Jaana
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 0x3ddaa0a571368ddc8d4b8438c583383ec4e1156bd5740ac84822009543011a9e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79fd1b46-57a2-46c7-9ef2-7adef2f160c6.json and https://artists.proofprofile.net/proofs/artist/79fd1b46-57a2-46c7-9ef2-7adef2f160c6.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 0x58267bfef802d3a6c7aebb779a624f9567979827d64800ebb7432badc1278b10. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INT109900808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce4a7a2ee2859132d524314e0f8caf0d688dd4e49e41dbd06c8b3e3bf33461e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA41S2100718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ff25e4459a887e191987e8205fad8e6a1542035f4d2558ea836f193b4e7a62. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:12Z), 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/ZA41S2100725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d208c85620520792e75e0644586c17232237d16fc4eef8816efb2060c56b2f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZA41S2100728.
Sapnay (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb177a0ad0e51aeb2773371aeab30d26b482cd9d7d0b35e56f9767a1bec1916b2. 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/INH109738530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e01b751ed0b3d347fbc29769472296b5264d495e60740235510b034aaca2c. 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/INS180351251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67da81eadf78b057038d731de2dd1c0c70e83813c310e99b3853d3e05cd54610. 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/INS180351253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4dbf3fab2c5f9395a7fbbed86997f8f625d446b437c0edf4c6bff7829a54fe. 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/INS180461290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7369c7c864a0cbb95ae97bd84ff418f1c12d159f146bde37a0ac2ea5310365dc. 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/INV110000255.
Thakshak (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4240619e6cc9922a4df775c6826ff388e8c82039093b8f3b663916891656e1af. 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/INH109938820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b68c10ff6151077178cc876169d48a026d061bbe608b94be31284e3f596166. 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/INS180351120.
Chori Chori Dil Le Gaya (From "Garam Masala")
Bollywood's Musical Extravaganza - Sonu Nigam & Sukhwinder Singh
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141c37fce28ba913b1b757f7ac8b61b6387cb4b437c5a57a88be6609666c64df. 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/INV110500480.
Naach (From "Mujhe Meri Biwi Se Bachaao")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab4471e56c62d3eb21a6091da6bc72ebce8dac1f6fbb59c60232094d2d30402. 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/INV110000564.
Biwi No. 1 - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4b64dcd67b322fc1123419dec1b30a0cc16b8d78572fad2f00d28328712b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INT109900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6270ad7c5da16e8bf4eab51c1d322fe3104461729f4d8944b7738b080277eed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INT102000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769e073ed59b91a11a91b52203e3a8bbab2b34e6451be9c1a7734a0b0d9e779a. 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/INT109900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbf116a0344c0da932ede71b0c9edffb4fdb25c3d9beb8af1d3f8d231731272. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INT109900436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ab4b1deb4c7b3a509207996a658aa51ee49918557ee6f07a49555f6e629536. 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/INT102000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9ca324ae2561cfb18c85d3afd11a37e1939c726a1272e74b4841cc44ea15ee. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/INH100164450.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daae970d03a991e7ab8d53070d1a1e125b078b92b12a6f096d1d7f4c9c7c25e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/INS189810029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a14bc2dc48585bad5136dfad24d411f3d74041cad908914217b12d3ca2692cd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/INS180021542.