thumb|Empire ruled by Harsha, 7th century CE India Harshavardhana (; 4 June 590 – 647) was an emperor of Kannauj from April 606 until his death in 647. He was the king of Thanesar who had defeated th
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 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 0xf7e1ad91d800023dae170cb58a2954313ece6516ad4c86b402d829ba0dc2d8c8. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/803a32df-ee8a-4907-811a-e2186d5d5b95.json and https://artists.proofprofile.net/proofs/artist/803a32df-ee8a-4907-811a-e2186d5d5b95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sarisaati Ninagyaaru (From "Major Ajay Krishna")
Yen Lifeil (From "Sankranthiki Vasthunam")
Lallayi Lallayi (From "Sankranthiki Vasthunam") [TAMIL]
Guru Ayya (From "Sankranthiki Vasthunam") [TAMIL]
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 0xaff01cfc80191dc50d9fe03c2c81a5d28a98d4623512eedcc90ad2db8abe0b18. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS181413553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231db115e431ede718aa51333be2103b5c0c367965e8d0677a1a3a569ffb1e49. 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/INS181413554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6972b2df402de2251ea5c9adc6406894967353d7394f5538c525c230366a7a2c. 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/INS181413555.