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 0xd4a2aef2f03b3a30fc866648659984ac180667ff330c553ec0b5d6891f0a28d9. 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/2051909a-fdae-41aa-a283-20f846687278.json and https://artists.proofprofile.net/proofs/artist/2051909a-fdae-41aa-a283-20f846687278.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 0xc1d5e1d2b2b229c11484c6598a518b483f6b43d728e803629e232869fe7daa04. 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/DKAXG0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe290ca43f7d1d37d793685285bced919baae551e8bbd919606fda2360e2f23c7. 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/DKAXK9771402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dbb5b6eedde240449d4ad701252ce3c2122ba9aaaa6b7e460376a1841b9c26. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKAXG0400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1895e1a7229f0d8f9d09362a8ab3409ed7ba71e4e078d110ef68c192abf706aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKAXK9771406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174a27a3905102cbd06d9e02711670c77af2ededbf6b8367c2151bee469054c4. 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/DKAXK9771407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0ca2a7df54fd13bace87ae46c79684a105ab8177aa22c3efe183295981a980. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAXK9771427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f85092214698b31349e9f49d772032e4db82b5a6c8100553b69ec2b19677067. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKAXK9771409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e09862016a9025dfadc456251bba18bd5d397ff795f73e01155165e797ec9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKAXK9771410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54eb06290ffd192e17ef16f1652d2396273dbc8a26f42466da460f3afb99a6b. 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/DKAXK9771413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509201ebf414307ba0b28b44e434152ae10ee2f26ef26cceeb08915bdd19fa12. 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/DKAXG0400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa33ac72d50898edbd67ba96d920cbc4f2e55f3be0cf705409d38d1ca067b99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM70600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cbf6852b8f7141810d7cd9d5fb05587305eb30230c4eccc4fdd835289dacd9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKUM70600268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46190a96b01ba5e92b53982d248559258d9b3e1c7a4d4bc56253d743f2621e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKUM70600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0262ac3e87d243f355ef8f34d190554097f3a65cdefcd67622052f79e0d9c275. 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/DKUM70600271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d5e1d2b2b229c11484c6598a518b483f6b43d728e803629e232869fe7daa04. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DKAXG0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f890419bc206bb8063c44b7db6efc90b5a2de385f9654b5cd537c8c748aac. 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/DKAXG0400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc51c395b7311e0c2d9ba74c883a163fed9a2c40bd6a39b202e5a450231a959. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKAXG0400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a031251dc113c8e5d9b5e1487f178c0290be10ef07974a73e822292fd3c14d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKAXG0400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e09862016a9025dfadc456251bba18bd5d397ff795f73e01155165e797ec9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAXK9771410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512ddfc757de2b2ea05024cb2d303001fab456239bf72e3e4f3b236e00b13535. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DKADG0602290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec2ce4ea6c8a1127a54274fa4479005f09344deec828c4482fd28653790530b. 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/DKADG0602291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55fdf6c8621b1143c20cab5859c7bda8dcdfcb9ec94a1ad3395e2a2a6b3d13. 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/DKADG0602292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174a27a3905102cbd06d9e02711670c77af2ededbf6b8367c2151bee469054c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKAXK9771407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c4d727b0805c9a062f6073b8d020670279c03271641065d315e71d678a14b. 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/DKADG0602296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90af247766898b9aeb86e8436053d689e43da4ac41ce4f91381244aec9154185. 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/DKADG0602297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dbb5b6eedde240449d4ad701252ce3c2122ba9aaaa6b7e460376a1841b9c26. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAXG0400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509201ebf414307ba0b28b44e434152ae10ee2f26ef26cceeb08915bdd19fa12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKAXG0400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766d51618ef1fa3069459d0372da2df68b73ba7b3bf534bf1477eeb5b2fe4026. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKAXG0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65374f8ef04c87b517203fede328afc38a179a48c44ada53a02b1796d860f40. 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/DKAXG0400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe0ff99ee8ef5f4fb3d8daa9d2adc2b0cf6fe386ebc5a3f4355c63489c37133. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6K2155204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6e4db10daecd5c87960bf7c2348b96a61955368e964ea104b65d12e7d931e8. 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/DKMM11401101.