Chitra may refer to: Art Chitra (art), a historic art that includes paintings, sketching with or without multiple colors People Chithra, Indian playback singer Chitra (actress), Indian film actre
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 0x8db6e3835f26962fa9ebc23ff336707f174390763b2712a43f3f34c4bb0a0c6e. 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/0635f1fd-e2ae-4bed-84d6-27275d7004f8.json and https://artists.proofprofile.net/proofs/artist/0635f1fd-e2ae-4bed-84d6-27275d7004f8.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 0xf724bbda3f21ed19e0fa0ca204009d9cbf52440aff6103d6582a4f08628e8ccb. 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/INA441300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1916e2c194e3ae5585148b5b3ba64f61a38b4d269fb52dba6ae0ba106b6ce35d. 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/INA441300798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d885fc96043650e3835f3b16e11992960568619ada2a09e51dac87373c98675. 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/INA441300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174744e05cd75c23c13ed07daa9784eb31a0ac408fc1f9b23fc4573aa536000. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/INA441300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cea6ba82f83a103e84910a4ad174c7daf3fa729568a0c0910ee6803fef55d9d. 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/INA441300647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610edfdc72a45a89b1688201f9de769b46b4752967638e7cef9cff7c26956af2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/INA441300732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936ab13ac9c83f1731b6b143287ed2e5f321423e5834e81c173f2821aba7d61. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/INA441300616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae2399239d03367ff1063744c025c41de139b59df1ac5207761855c1dde095c. 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/INA441300641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9629bb0243350ced9cf7dac0bcbdc37fa4f8dcb76a034d9109465da5a55275. 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/INA441300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e60b3a11be619683a9bee9c512781fb02d0db4e7523a9e978a4a957e0ab1d11. 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/INA441300623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd071f3328a5826127af950c96109c880851ae577d99211f60275904c5a7b6b4. 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/INA441300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b8988ef46d31f5f3b6efc99d527014218c969cace5c3afdb3add12303f1eca. 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/INA441300896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55dd094a0417a053225f8dafbbd85208c0560ab38c5e17cc4177da1c613df0. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/INA441300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95562c3788c5cac69ff1400601fcf97aef1d5f0ee9ba14352f6247ee88a0087d. 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/INA441300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb519d83b57c63878a74a1934c85dd86a0369666013039d73e6581874dc30ced6. 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/INA441300906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac2788a5a2697d7bc3d093407308be4f9ff1df85da0962933eeaa28d8aeda0d. 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/INA441300813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa976f0bed35495777a45f6dcf46a3f4c3f2a8766d441c0e5450f9e402f72de98. 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/INA441300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f4d5c8b99ba9341fe8ee6006f08ff393a1eb8f4bbf2dd1ede1e3ad6b46d9a2. 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/INA441300883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6fd3c6d0f13b9ff5a014fbf1d54c66dabe45c2f95b37e105856b780089b51. 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/INA441300828.