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 0xed5dbdf4b6a69ec113d935bdd101693a61d4692d2aa6f2456e79d708531f2761. 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/c796482c-7cc0-4f3c-9f2c-55aba9a3fff0.json and https://artists.proofprofile.net/proofs/artist/c796482c-7cc0-4f3c-9f2c-55aba9a3fff0.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 0x1620e8da8f2a44c27ebcc797c70e605e9a98990ff205a970249281a71fe7e8d0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:50Z), 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/FRX872027448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8d113df58faf9ccec41fbe22043e336f0cb0ebaf291aa7439342ba509f834. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:45Z), 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/FRX872027449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a362cd2316b9e04482f5215e0c39c69c7dd0a51be6904f606c1908f10ae1556. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX872027450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b4fb7d2764c40304b0af52717f7361d35c9749b1b210a009f1834eae1818ec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX872027451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d52d94c2542725ebb24930c06dbee2d1ea16a2f59a466a2c930b0f68c7310c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX872027453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde7e5af0acef6b318b3e57ea09191d5c9f5234349fa6c81c21f72b0f8fb0e11. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX872027454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a5ce05d8a5944f547592d78e5e022974577fd120b188b1ab772331f3e13d2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX872027455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329fb0efc58363547ad5722f8a9280da8a784d6690de9ab44fbd186e2ad8498f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:18:13Z), 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/FRX872027456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b0372ece685ab612830d83edcf40620303dfa94f82dfe60adad82a0bcb40f4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX872027457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7709f5b4e2f1bd4a6612a3b87203b4a9a40143eaa3fa48313e17208df205db1e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX872027459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734770ebf1fc5d5f0c90e3516c16b0ebf304b9e8dc139a2d13284f33b15125e2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FRX872027460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14448adb30191baf17de58d4a73aa3655bd3bc4e7b63d36258e2c026152cc427. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR59R2160968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c02f99563bb1d2c78df6380e8f844d3ad78be85349168c52f1f7ef0d77c21d4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR59R2160969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab602ddde29f45bbba8c9ea940d8c699b42162d0441a1353025876a20caeae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2160970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d24d2426ae06962d6f697efdcde8f397b1e7b7d987103661d33e0119528024. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR59R2160971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611590dadff5a10b031aec6e9e2beb5419e0b2556f300b96440d7d0a65448d6d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR59R2160972.