Manjul (born 1971) is an Indian political cartoonist. After working with major Indian publications like Dainik jagran, Rashtriya Sahara, Financial Express, India Today, The Economic Times and Daily Ne
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 0x1e69c02070904ac86685ea0cae7e6066774be7a765c70c1a182a0de4aaf8b38f. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4418f130-f8ad-4532-ba41-fa05a6f3da79.json and https://artists.proofprofile.net/proofs/artist/4418f130-f8ad-4532-ba41-fa05a6f3da79.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 0xbe05fbc7879d571aec0bcd40a788e3989663351cb37706af4c13a35e868f41c5. 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/FRPGB2218220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528f2b98f68ae4bf73a0c1aa0634e5cd471ed74e0bdecec841a90d8d3fba7e7e. 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/FRPGB2323380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffea3424eba81ab2bff8a9a87cccc24cb03adb33b07e552a511c29b1d4a7d80c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRPGB2323450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c944f699db878803d634e28734b91c740960feac61a6d74bde345e5d26eb779. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRPGB2323480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290dee2ce9aed642693687a89482a84d259948eaee02d5205593b049cf1194b4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRPGB2323490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f204178dec0dc98332120d168f5fb136221b39f8a7e970e55d56e02ca9f3b3e. 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/FRPGB2010720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2be06ee3867c8f853f8e1ef1274452c346aefe45cd13e9bd3f749bce0f33e28. 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/FRPGB2112880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef47102501e010b03f94ab82f06401c214915524ce6d28f851e5635ac666382. 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/FRPGB2112960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8658b420fc17cf6c8616e5e9b7bc7982231616f33060db0fb348fdbf1a232. 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/FRPGB1500820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c66d77d0904104d7372f69ce0cc4be6ff19d3b0b03e27c6d40e05fa80aebdb. 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/FRPGB1500850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f5475cc73d6dc49745aa33aaaa05e79d42cf0367c99eeddeeffb3a7667add1. 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/FRPGB1500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dfc8345a856d2a21414e858d0c2fe1e965a1f677d3319a932eb6a1b39f959d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRPGB1500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c33370af1cf5e0d1e5e03e6dc410ebac17a819f07f34d3def5cf7bd2db75e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRPGB1500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aec4636d424b82726a145dd7f1e2d1773a0607754aa03482714248173f6e1ea. 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/FRPGB1500890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cac2637bdb32cdef87fcedaff8a5d1a4b46766ea629bbce9c1c1242602d583. 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/FRPGB1500900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81538c615a5e71cd3be3a9c2a277ff797f42d6f1f1a26d4851722528ff395ac. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FRPGB1500790.
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 0x38fddc88f994cd61d73c6f3f7ab71172ad62b3ce77d810e44c48374784b6277b. 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/FRPGB1500800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93373c7420a22004d5efd66315748a9f4314dc8465d448664a0d4d756898b3. 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/FRPGB1500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad86dd1ebbeab3cf1535794a26a80bbd1e4fb6e5a224d53ecfff6b5954dfcd. 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/FRPGB1500830.