Amar Sandhu is an American-born Punjabi and Hindi singer, songwriter, music composer and producer. He is best known for his unique Punjabi/English fusion sound and his 2015 Album "New Era", featuring
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 0x96ad31dfcb479be7953b5f8710af1f195ec60aaddc30820c95fee0d8a0bdf41b. 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/6c3a8691-8d80-4266-967f-8e13c4a564ac.json and https://artists.proofprofile.net/proofs/artist/6c3a8691-8d80-4266-967f-8e13c4a564ac.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 0x10f2ec89c0b723ef87c11677b129db962dc07deaa44f31158e829cd14d85800e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/INS181702328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ae5f6082bd9c39d545700cd8e315229fe43a7ba459e6dbde673422ab491a3d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:05Z), 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/INS181904795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5800c2a5556a0c9f057f0eb23a54eb77fb27b0a2205908f3b50618aaefa4f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:51Z), 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/USCGH2111834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5401e857d7bbaaefd490e1e6ab8cc7afa4db51d434741de49a429f81f7125e3c. 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/USCGJ2191572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ff313e47aa01e501ad461fe41d584afd09b334ee75db0344b975d5e6639826. 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/USCGJ2191573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf937ec82ec829c96e1d52af02103c08709e7b77c6334f0dba73007f75a51c8f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2191576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5914a151307d94f5ca01ee57667f7b1fdc770969f66cd77aff5bb7458626d257. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ2191578.
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 0x02dae8258d3f6bd62a1e2a001aa5ecb88aa0e58b0141019ee0d0c18b25bf06ae. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USCGJ2191574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb371110df4ca729c1b975cb772c4ac054a79a8ac793659bf0aa109b484e62498. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USCGJ2191577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ef480568217b88c23380ea15fa9639078fc5cc14734bfd65554c50125e39c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USCGJ2191575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee56abff6c40123900def1c53da0c501a404736c95e90adecfd465a4d1cf35. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY42089929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902c1e902e9676cf53d5af501a4a5bd9fe45e46f0ff4eb283328a1cd10eae627. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM82283792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a34f671ee64919332a17d77a8ca2a66b1a40a37f6dae0e68465c42865b1a53. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/FR10S2379528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc611068b0d7e7e693464c288d503773069a54d5ce278f171b05e8fc8d961b54d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FRX282479001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b105a9abb809bd83447492c26debc96cf224e30f6a78a8e75bc7f49ea27dc. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/INC622220710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216709bcb3de2dad11f1a63ea6a7fdd768825f33f428689f4fa5150cf80c084. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFMF2440850.
Absolut Bhangra, Vol. 4 (The Double Shot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2756e9f56a2eff2b1e41f5fb38f58eb670fc969337d708bc6553ce3816d1bb90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA3SS1027209.