Madhusudan may refer to: Madhusudana, an epithet of the Hindu deity Vishnu Madhusudan (film), a 1941 Bollywood film People Madhusudan Gupta (1800–1856), Indian doctor Michael Madhusudan Dutt (
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 0x638ba8805b304b2fed54d63d927c8a9c13a5383d25db67252a84ac2eca34f4e6. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d9ff33e-b234-4ef5-9288-0bd897298b73.json and https://artists.proofprofile.net/proofs/artist/7d9ff33e-b234-4ef5-9288-0bd897298b73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sri Laxmi Narashimha Swamy Aruthavarshini
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 0x52ff45303f28efce76e723a29d7f3c8e9982377f3aa5ab0f0d92617b25b1ba2c. 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/INS270400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5415bb8e2f5a0b7b8c65f8df1cefeb6b8a1bd9a4c68adce6ea7e7ef5ce1427e3. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/INS270400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df45e3b28781a683cdb5b5fd0fd790df818a70cd978fc7cd94353d5cea08429. 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/INS270400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3820d71657783c2660f29a7c0c67275d426ffde9ff7a98bd70784361df45da. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INS270400359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85091ada41b69ffd41599308894900408a05c20c198d99c4777fad479068b4e9. 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/INS270400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d49aae5d1f874fc2cde3b557ae743ed6ec06e91f6ebfd93859799b58986c5d9. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/INS270400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdcc6742d2aa2a4f03e627052e35bb9b227d4d6d4c4053a296d4f4f5085f952. 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/INS270000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9b5efdbf4755e33c7268b13b64bdcdae77783bbdb48e25bdd37c7dd9f0530. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/INS270000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cfe9cd6949ea7123a5ba4eb44d690282b29840dabad7b64f9d68f165b6431b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/INS270000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c588f5700daa449f696da85eaa00b2bb1c93bb79703776a001fcb390b254565. 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/INS270000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a101eb5b3f5ecafa311a9a103a4a5d6208ae498b3cd363628a65e775bcb8e71. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/INS270000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b43dceffd2ef0fd7d783186f0eaffd9cf025263220a8ca6bf50e56abefe4e9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/INS270000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e4b53beb1c9aa87e56eb16245d7f967b96f9170cb6dd9ec7d04875b5678769. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INS270000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e3878362b0a98255ab62bfd710ffb988c79dda57b5809c0dd1bf4126f7724b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/INS270000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342808b466719f6c14d72a71917733b70a1da167eb3f79fdc81bb59e1159b193. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/INS270000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c3244271dddaff91c49667cce1e24facfa8587b5cbaaecb29b42501e0e621. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/INS270000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6db6867b6b1314f4fb323bf5b8505932e1bcf8c15778c327b011f6513f2b46d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/INS270000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde827f4280e3dd58e95c2ace7ae7d85f7a62b90e5c7246f98ae66a3bfee981d. 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/INS270000165.