Shobha Gurtu (1925–2004) was an Indian singer in the Hindustani classical style. Though she had equal command over pure classical style, it was with light semi-classical music that she received her fa
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 0xe9cecff51b403d543f0c53091821d2c6a586eeb0850c287219c3b5304c4a902d. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a17668d0-800b-4473-8c5b-8d03bba88f0e.json and https://artists.proofprofile.net/proofs/artist/a17668d0-800b-4473-8c5b-8d03bba88f0e.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 0xd185b75e95424d89650facbb7d133face0a3cd4247514226515301f4b7117c06. 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/INR1L2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a06981cd4c70f0c31b610383ce51b8999c56c774fdf6768ed7888b67e374ec. 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/INR1L2100027.
Indian Classical Vocals - Bhakti Bhajan Special
Golden Raaga Collection II - Shobha Gurtu
Golden Raaga Collection I - Shobha Gurtu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553677d1be3dad2ce2d62edaddbe400b44f71310270342dcd40ad657455f3e7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA561447634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7060de21a4486c27d24ff84dd7c8be2fa4bb7d01dcc1802a7b43f29e5e54f8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA561447635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec465b440b38367a956c617cf064808b7a0d73b253362071373eef9d48c9048. 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/INUM70700438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291336e72d9f6f3a1d82a7f1cb1e0017f6b382216985856f1e50b52226f4505. 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/INUM70700433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4368e9338c5b007d819b5241014eb29b6075d9ad27845bab8c5d7f2033cd22b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/INUM70700426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a837d579430ac70436398d41f6e004a8d77e8f74f701d0313475df7e6b42ee. 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/USA560929600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fadf2b0b9ef71fd5e06ce11fec5ed56964e715b99825355352ca305ae5fafff. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA560929603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e50bab87fe22a661e6987d8b65d3b60c0c16fb65a715ffb016b5f9305523e0. 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/INV119600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e35130000d9e044f7e913658f2a403a83b1c25eaff97934326325b84056f47f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/INS189423543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c872b8407d7fd282d069e108c20d38d847c852d0a1c4c81dc5fd3da638c9af. 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/INS189423544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fcc11d8343b41f947c7b54ab817d0cfbd76d0cdafc8021c4fac85fcc5241aa. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/INS171602114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1d26c89f74525576a9359fabcda240a7d7b885f2cc0e05947a8d5fcca50eb2. 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/INS171700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca668237c0ef93e664ae2a300ccd31063d708c73d75b426f9b3a719ffae45a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/INS171700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d654a8757905b976b12e1f7aef12b047647bdf561eab22f78513b10e551ff. 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/INS171700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49dad641dc0dc105ec917298242ace65192200d3a7fb35ef3a503749625b9f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/INS171700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5816b952b69b6d7019a0d7dee40bd9f54d6b2934dfdeea6400fcbfe707958880. 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/INS171700051.
Songs Of The Seasons - Shobha Gurtu - Volume 2
Aaj Biraj Mein Holi Re Rasiya (Rasiya) Kaharwa Tala
Shobha Gurtu, Purshottam Walawalkar, Aneesh Pradham, Indru Atma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b31a514f6f016c1cdb3d377b47f48e417a9758b419ead16df2328d6eaf7b6f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA370532837.
Kit Gaye Bawari Bana Ke - Raag Khamaj - Deepchandi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263581523a9749b39bd72a778e9ec3f8bc3b8e723325beb8ab7dcc30de9ef86a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USA370697626.
Chhai Ghata Ghan Ghore - Raag Mishra Shivranjani - Taal Dadra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0e0550fdedee37873d99e4be4c5a696ebcc85c29e92afaa07b37408dab0e20. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USA370697627.
Madh Me Shyam Chuvo Na Ghaat - Raag Sohini - Taal Ektaal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46face39c250be9eafde5a15bfd1f476594da3410c2654ab571e20dfe8fc8b32. 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/USA370697628.
Mori Choro Dagaria Ho Shyam - Raag Pahadi - Taal Dadra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e030faf515eef9d86df2ea0630227fa2269977a8109c06fc00b45344b0da39b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA370697629.
Najaria Lagey Nahin Kahin Aur - Raag Bihaag - Taal Kaharwa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d708a20eeb032daaac6df5f03fa8d88b92d6b6e3c542d2a1096d55344a1223. 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/USA370697630.
Immortal Series - Pappi Jiya Nahin Maane Cassette 2
Sawanki Ki Ritu Aayee Ri ( Kajri : Tilakkamod )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6d0a117e3020cf49b1acca96d7bdf5fdffe9cb91ef371fdbb1da9c2f31b01b. 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/INUM70502939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f3051ee55eeb605b823a1a1f62279488c779f52873029a12dd7d390fc21678. 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/INUM70502933.
Radha Nandkunwar Samjhaye ( Thumri : Khamaj )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e9d27b0e08cd5050d0c1e79625e10dda92b25f1b5084121a5731e2800cd5d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/INUM70502937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1bb985eb4fee843a54f3c50cf18f64b83af678cf5dabdf7b928c794109e71. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INUM70502935.
Patjhad Aayee Sakhiyaan ( Dadra : Mishra Sarang )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb203bb0af8093ebf72f54840e7ab5878df321c34cb5cd583e50ff9f5cabcd4. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/INUM70502936.
Humri Atariyape Aajare ( Dadra : Bhairavi )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8832e5fe94feac49309d14fe274fdd16b2fe91c96992a689fc6ef87c7ef5a. 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/INUM70502934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b765bc48e2e6bbf16af801a6c8ade9005603e93794c912eb87d7e705dd6fa5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/INH102313608.
Madh Me Shyam Chuvo Na Ghaat - The Best of Shringar Ras
In Concert : Thumris (Live At Dr. Vasantrao Deshpande Memorial Hall, Nagpur)