Sarthak Sardana (born 24 July 1988), better known by his stage name Sartek, is an Indian DJ and music producer. Career He is the first Indian DJ on Hardwell's Revealed Recordings and to have all 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 0x6f8e4e0a4cae8d2b5002842d108d354f4e5966dab7a3cec8186134d75d7db106. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdb225af-6736-4d74-af01-4398c9932b89.json and https://artists.proofprofile.net/proofs/artist/fdb225af-6736-4d74-af01-4398c9932b89.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 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 0xac4aa37205a16ec965332f6d37c05e9bb18e2c2187967e94ba98ddba5604f336. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GB3CE1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7fef8bd19a80268e16938b1b6cbd838699e575540bdb252d77bf89f992bf62. 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/QMEU31617731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdf13490dc6bb483719a5372ef08b50c9dbbf63cdc2e8436b5c4d6b08a96a15. 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/DGA052297760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c26b0c549474a2e99d372298690b24ea2f23a294cc578e6205ad93e60d1603. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZDA62463847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8098c429cb86134a31a4800541569da91781ccf311729fad130907be6db77da5. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRX282404779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c7d603a75a317edf2b7747f265dfca4de4320316e0c53f927b1c20afeda00. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282494743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0811631815a17f04f14e05827203f1b2d1b0d818894d83a5a98a30d7098636. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/INH102412281.
Thug Ranjha (feat. Sartek) - Sartek Remix
Thug Ranjha (feat. Sartek) [Sartek Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18b7a61f09b15eea736a62fb11d035acc384df1b252500f9f4a464331d4a2d3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/INS171802006.
Don't Need Love (Mix Cut) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966f47e5b0b3836f458736f24dff07ca39d9a65c9e452fa145ce786b5dba9ec. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLS241502827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002362f3a5ee772275968c2701bdad5800f225d8501d5c2feb12b491cf70937. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLF711605508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b9e1ff27f47737acdb25e471b046d62731593e0781345a8f1226851581aec. 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/CA5KR2286799.