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 0x540dd50a283b4d62db6c32b560199a06405207b129b6def5ec5701da8c38ec40. 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/aad6d970-d434-4446-bdfc-a73eb8d9f2df.json and https://artists.proofprofile.net/proofs/artist/aad6d970-d434-4446-bdfc-a73eb8d9f2df.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 0xca38e246daab919a509d844572d19e334fcefaf3577a329a387c4b07b63695c3. 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/INF040200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5776c8cbc8c6726d70ce8b1c41086cb48665f72ea4845d67a8fcb1235884e71. 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/INF040200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38e246daab919a509d844572d19e334fcefaf3577a329a387c4b07b63695c3. 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/INF040200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca38e246daab919a509d844572d19e334fcefaf3577a329a387c4b07b63695c3. 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/INF040200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b8cb1cc58f302edb2c7a126e81c5d5ba9c05bc188a3ed0187e4c51c60d1cb2. 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/INF040200432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5776c8cbc8c6726d70ce8b1c41086cb48665f72ea4845d67a8fcb1235884e71. 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/INF040200427.
Hits of Unnikrishnan and Harish Ragavendra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5776c8cbc8c6726d70ce8b1c41086cb48665f72ea4845d67a8fcb1235884e71. 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/INF040200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b8cb1cc58f302edb2c7a126e81c5d5ba9c05bc188a3ed0187e4c51c60d1cb2. 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/INF040200432.