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 0x5a4959697630b64aea4d9ea1f12d9cfb40491337acba92d59eb4430d2e0ab8e7. 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/b084efc9-6f95-45f9-bac4-3f004d3efbe0.json and https://artists.proofprofile.net/proofs/artist/b084efc9-6f95-45f9-bac4-3f004d3efbe0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Melayu Cina India (feat. Pele L. & Touche)
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 0x618d71da918cf92437de145ac83453bc05e42f92b5b177841a6ed893d0051ea7. 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/MYUM81907187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e41fa0e68a8799a9a69e3968ecdbc3e243a7f8cb865e33969e9e4a0df54540. 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/MYPI11200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafee40cb48fff34c8270ba7632fcb27f95230cf11db4e212b4806e12b8dd710. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/MYPI11200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a47f7e14009fa42a43f1f73061d8bd61560a97c1b33249c223d6d33d29d53c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452128675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb161a01d703c483aa8f03f032af4469df9769a37ed175d4aa6c0e6b34a268e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRS182116400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ea1b9fbbaffe23f2c839dc29acff6b1aa0c408b0bcb9c00f0263869b7fcb89. 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/TCAGT2356199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afff783951ec64b7c82457757e112fe76a7e7299035d4176b387044cfdfa16e. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FR96X2144464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eb3a29dbdc5ffa5c9a9f7355d866a1d93a1c79598d4ac34903a0a1d7223a33. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR59R2165823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d03e40d9ff39451bc33167b86b4bd2d7f2f6e20f7b77d22949e4517c46e7806. 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/QZNWS2277372.
Unnai Thedi Varuvain - From "Aathitiyanz" Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a370cf1012278c7246d6143f2577f8258879a1febef6ffaa6540a1586d74cc. 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/MYVD11500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0c4cbbbb55d85b43b67478cb016cacfe8441a5162032cc264d7b2ac715eb8. 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/MYSN19000011.