Damal Krishnaswamy Pattammal () (19 March 1919 – 16 July 2009), popularly known as D. K. Pattammal or DKP, was an Indian Carnatic musician and a playback singer for film songs in Tamil. Pattammal, alo
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 0xd5cc584015d320e85b10a9aeb4a046fbbc003369d94fb4635387d2a41d8a959b. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bf4cabc-4649-4156-920a-0813e7fc9ff7.json and https://artists.proofprofile.net/proofs/artist/9bf4cabc-4649-4156-920a-0813e7fc9ff7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pooja Sankalpam, Vol. 2 (Compositions on Lakshmi)
Carnatic Vocal D K Pattammal - Live Concert
Rendezvous With Legends - D.K. Pattammal Vol 2
Carnatic Vocal - D. K. Pattammal, Vol. 1 (Live)
Paddhatti, The Tradition Of Burnished Gold: Live In Concert - 1977 Vol. I
Master Piece, Vol. 3 (Live Concert at 'Sri Krishna Gana Sabha', 1975)
Master Piece, Vol. 1 (Live Concert at 'Sri Krishna Gana Sabha', 1975)
Festive Series - Thaipoosam - Sharavanabhava Kritis
Vedala Ulagam (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 0xf0cbfe745cc97d2f0effa5907fa8fffa266b7becb56b891b766b78b127709009. 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/INH100222830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e18db212b43d37b1cc4b0c6000524000a3342db6c5baa6d01d0e7265762594. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/INH100515395.
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
Nam Iruvar (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e873c259f36854bdbc943ad2ea6f028f75f5e5a97d7b3e69c0045a2f984804. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/INH100503929.