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 0xeca95bff2aa725fbfaa5672f2778e8c5687f628686b06968c7dca1fc7a75903f. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c8b254d-2bc6-475f-b5f0-0c6df8bcca97.json and https://artists.proofprofile.net/proofs/artist/0c8b254d-2bc6-475f-b5f0-0c6df8bcca97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amma Varnam - Raga Gambhira Nattai - Tala Adi
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 0x2e319db6484af5390c662e25a84aea57b7182beb9eb971abdb1480896196d33c. 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/USA370697936.
Mokshamu Galada - Raga Saramathi - Tala Adi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5858c49d608e3b9ee7d5c04ca6b7221a082b55db9cbb49f7dae598410b8c52. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA370697937.
Anandamruthavarshini - Raga Amruthavarshini - Tala Adi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c74da53150336848598581da3627882079b5590eaa4382355061616ad2b03ce. 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/USA370697938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6ca83c1bfb86fbd84f9f2393b78c3bc40214292d9cb2274667838d2e447d4. 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/USA370697939.
Krishna Nee Begane - Raga Yamuna Kalyani - Tala Misra Chapu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cda7ecf074ef3f4428fce10055f1ceba964683e82f8d6c73a9fcb77459d5e. 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/USA370697940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c10960d091c21649a8da6bccc8c888c53aa22861a79985d2f1c3928edddf6e. 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/USA370697941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd03c7078f700023bd2777fbdcde650038d2ef18e55a47367895052a628509cb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USA370697942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4556f25b2653091065c4ba71ec4252de1632979f6a8218911a1b1320e330bfb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA370697943.