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 0xbd0f125825e044ea5ac93def9d8381a0773a7004ed7f301ce400d5e02318e5f2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac30eb0c-b9a4-4e28-bfcc-8ab9d9541e7d.json and https://artists.proofprofile.net/proofs/artist/ac30eb0c-b9a4-4e28-bfcc-8ab9d9541e7d.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 0xad7b3538e1d2bcee1ea96c38943879aeef2b40f143aa0cfc1720ff5db7dd5a2c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/INM7Q2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa532ddadcdb11b8b5c66b24eb958fe775237b2d6d5af7b72dca87428d90e95ba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/INM7Q2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5465679cb44ec55e41388d999c7533c93f7d15869a2daf7772b07b2971bc11f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/INM7Q2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a84b70d56757609c4918142c8861abf9b03592fc6ab83a5dc699378c6a6cc19. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:13Z), 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/INM7Q2500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d982cb8926fcb2df7811e1e4bdd39f60020efcecf0441d7adf50910089d022. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INM7Q2500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9fc910a40561f629d46e1e287586b09a2a282038025fd8cc477d59f06b670a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/INM7Q2500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbea47e05da353ae641cf4a7b78e815de668c47c52577a1b4b7576e6a306ba15. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/INM7Q2500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ca8501ff74dedbde4d02d7dc32aa0e553c6fc224baa5bb0b5b4d8701dfbbf5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:55Z), 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/INM7Q2500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec889145869d5bc9e8bd40f39c015b64070a07c509f68cb85bbbcba51ee95e4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/INM7Q2500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375ae524f2ecd8cb0ee843d0a06258d87f7028795dd00f922be7e1d8441dfaea. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/INM7Q2500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad17b923c80176a37b3ffbee43850ada4b8a8e8a8cdb9326aaa692c2aac6e578. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/INM7Q2500531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b5d6ef421a40110b7f46b5f3a0c99158e0875d4bed87e5a904d4e17283be9. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:15Z), 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/SE57V2411849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6894793f0403519f68567583d139a965eeb4d49b2cc7eb45eedc01ce05a894a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:42Z), 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/SE57V2411850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411918cdd2f8fc33f3df3ae66070764abf491c1194fd9e0d61d2c93ead173d5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SE57V2411851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2698f210e4d57e5148a1c43a6f62774b5a256441030491b1d120dcb19667fd97. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/INM7Q2500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c623c8873bae1cfddc456a1c328e74e1f28d4a765dbda4e06e9c6c969b134d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:37:46Z), 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/INM7Q2500596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457c21e5446dbf9ed811d0b83cf89b76fb1887c3648173d16520e60ce5f2a0c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INM7Q2500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead3f8a1a37882410814b427712d744a6abf11c3ca1bb4bf6e93061c85fcbf7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/INM7Q2500673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbd04615e667e1c15202e567d58d4bd4173d9231f56b8fc18b76bf716ed95d7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INM7Q2500675.