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 0xe544fd1498b1d590ed3dc26f637a73eff6e98f0b5a53ebc539258c05f23c270f. 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/a770c678-eaea-4158-8b6b-96e0e5e2ffbd.json and https://artists.proofprofile.net/proofs/artist/a770c678-eaea-4158-8b6b-96e0e5e2ffbd.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 0x07ede35faa8f610f7050b4501f50d696298f271901c440cbbde300c90bd6e437. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/INA191700068.
Asur (original motion picture soundtrack)
Tor Hoye Jete Chai (original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f693ee15f879a5f66044c264a9a445abaad6dd3cb3cbd4d5a05baecbd8a5d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ING381700018.
Mon Jano Na (original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f038b61825d707655dc00e2884cb81bea3956e8867893f710dffaf5e59939d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ING381700020.
Aagun (original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ed78e08109a62ea2cdedb2578b6607cb8b0547351bc63669e07f95d5dcbf9f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:41:08Z), 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/ING381700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc790a36425f3944df36f7e60490c3d374bc623ee0f6fcd8111af975e01f4ce35. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/INS2X2101253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4da6ea6a5d5494973c73e83262c8ad106ffe5c0ddee9e9ad0d1cf248ec844. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/INT132301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74271013562508a9c413b62ac2feec40aa70ea74bcd8a92ba3b75fba80d33b71. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX282494546.