Roja may refer to: Film and television Roja (film), a 1992 Tamil-language film by director Mani Ratnam Roja (soundtrack), a soundtrack album from the film Roja (Tamil TV series), a 2018 soap oper
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 0xdf2b505d83a237e019adf323ed10bcce08243457031a8aab82dd9122b2e3ce12. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df086289-8507-48d2-abe4-75abf85277fd.json and https://artists.proofprofile.net/proofs/artist/df086289-8507-48d2-abe4-75abf85277fd.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 0x0a15672d538f5cf39dedf8b3ae101931d4537d70e47b189a82322326ae45f5ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMG1416864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca54001ac1b12e3f1bfe1dac15a16dca2e6b03af5bfc1f219bec7f9e46fafdb. 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/QMFMG1416873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de56b9f238453c3499290e09b904ee20a3bd5dbd6e04d73d57ecd301861865. 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/QMFMG1416865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22456c28b1e4a41e54715cffb4ab124b0cbebd9a42b02b34d5eb3abf1aa6ad. 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/QMFMG1416866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1086705225d3e6bae6d80769ac9c96936c2cf3d39fa096964652f6f2845fd80. 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/QMFMG1416875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e240caf57258caa34a86c06d0d7f89ef2d8b59039614b4afd0d9b060ef53d9a. 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/QMFMG1416867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10f41a3f280a38f05877a927ecde37f82e4b4ab0055b6d73417e20d4201c0a. 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/QMFMG1416868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85d8c00a687c5ce458017ace9bfcde10cd5c7e096ebac9821b936c9f496b1fc. 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/QMFMG1416877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82488e9fa11e60a94aac5844dc9d13544491623ec7d9aa511b77f6fa47fb136c. 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/QMFMG1416869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dfb7a893a76675d268806e16b4a88fbc02e409e92e34d8a3c67e6c886c127a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFMG1416878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4845e1e23783583052056be6d4dfa11b57d1287bbd80b81ccc59d8c69d1a315. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LVA741300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b1db470c14cda1cb77ccf314d0807550243c06adb080727acaba7ecfadc9fd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:35Z), 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/QMFMG1416871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c598fd402e90988f477b43d89a727b6264ab3e2131dfb5c31b75d388064d7. 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/LVA100200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d929ec9aa6a47477432b39f4e2f4657427ad3fa40b5a1dd913de54ca9f91361. 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/LVA101300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a57ea2d2795b22fdb2e2e306debf343c52a45394124ff634f491f4c1d44ec. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:49:37Z), 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/LVA100800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7ce3a30550379a52e1c31191b5dd7859dcfb1ebc55f8373faf702fa10b68a2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:06:54Z), 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/LVA109800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ed6b49abee6d96321edadfde4e43178ab9c3ecde0befc1673e02434e13d66. 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/LVF431400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da63bf2afa313c5e19dbfa0a54a57d7be65bb87ca4e3e664799fb76f1bce3d. 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/LVF431400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344e179d476f44abcc5d061ead34cde77b44b4fd9c5e1a4b9f9e012df9ba76b. 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/LVF481400096.