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 0xf230ff1603684b3e5c3ca5b9b9783ed77f904982f323769cdf6dbbdb96a590e5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/911d7031-667d-4be0-b0c9-9f5aecb702df.json and https://artists.proofprofile.net/proofs/artist/911d7031-667d-4be0-b0c9-9f5aecb702df.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 0x40d50cf5cbf9e86a55b6c07e212054a951743ac353251f3b85dfa0c94ea4f340. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/KRB921917461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9be30aa229e7c76335fad779087faa6869945c8638ef3201bdd37b94ec0e341. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRB921917462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f724ab2e14e64a1cc984aaf2f3586b3038790acc2fe66a0e1e0793b712fab4. 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/KRB921917463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c61c2a0d26ceabd6063904ce33e19a8b066aa4a11a31063f0c03a63bf82f7dc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRB921917464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fef9d62cedebe615a87e2c5ce98d1ebaf83f0649d841563fbf389234162103e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/KRB921917465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f7ec3071104e915ca042d2f7b06fd73fe9643f166388efd72697b1820ef7b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/KRB921917466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70e9be736971355e9f4a09d1f8b5acdadff9f79625436457692a6fc5b3229f5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRB921917467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8586d840f6a66ed451a4e0be50131dedb4c3bd93a4f9ebc66558613442f597ed. 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/KRB921917468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236fe1c93e1c6b700cf3e37f2925dc9ef209aaa51e63fe7fd5719aa10bce3577. 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/KRB921917469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c092849dd1eba5a7001e78ac73d6baa069a21d73504c95e572c6c357a343c2. 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/KRB921917470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b08336b11562fa9e495c43651a65add36171709a69125c74f4db348d4aa041. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:36Z), 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/KRB921917471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf535fa5eb73aafd29971c1d792f9bbaadcb32c05b6f900857cccd9bdbdec299. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KRB921917472.