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 0xede99f4f6f7169e641efc024b1f189dee96be7acaf6b37fc48be229bc6ec96b3. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0efc3c3d-cc75-463d-a7a5-eff3381520a3.json and https://artists.proofprofile.net/proofs/artist/0efc3c3d-cc75-463d-a7a5-eff3381520a3.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 0x9d3a1619fac53e02c5b2d9ae8cf553469d322e56ad457812265d7ba357d797e5. 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/UKRNU2100536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58714821b647a9ebcbb719961f412758534be9be337790a42121910166d88a06. 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/UKRNU2100537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cccad48d744ec45b7b7a701c49fea13c71a95435d6cdcdbd4ce1d791f06a008. 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/UKRNU2100539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c0e13779433f112b5bfa24c85efb3a67ec2253bd9954e0c601185d170cd2c4. 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/UKRNU2100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9e65cb2ec7e16acd3874c4ba58c118845a201762797002666876798916ce3c. 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/UKRNU2100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90a20d61ca013920ee70522486ca98b45b714421ff5ad2cd7f36c547dba767d. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/UKRNU2100532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aea63be8bb41a550d29504f2b88a93eac3d8990669fac814a8f11d546fc686b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UKRNU2100533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94b17399638736259029f0e102394d5d2bf6a68e608da5f79b40e7704924d05. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/UKRNU2100534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f3ef4f1ba5cdd298caf1b5884fd445291b166ba4b6c3480aab55a88c76127. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKRNU2100535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9abcad48e15b610baa7b3a0ea79c272bbefe6be85a5b13ce87787f56d28b2c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKRNU2100538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa82f6b63b2654a5ad993a96d34bdf3c7c44fa90fe3a67776ad3305ef3c6e2c. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/UKRNU2100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb8bc00c348fba2cde54e0ca8413b64d2456f366d2c9a7b6352a246c2a2ff13. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKRNU2100541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c5bdabe04bba236a945b74e169d91378885795f5bbf51fda653c30d2070810. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UKRNU2100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b17f8ad175b7103cfc0f9860bc6100a5d60ba168c483f4e8f436e5fc73208. 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/UKRNU1900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86422150ac932dc04955c227fd34c3bc82a4de5dcd59c8fcc89cf0c74630a47. 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/UKRNU1900157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eece97f65d62b7a8e4eb3e85daa4f40c4447da0a650e93e3370d1c3e071615. 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/UKRNU1900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69891955d0894e07925506b18ecb6173a89828229752324f4a38fe102f6ffde3. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/UKRNU1900161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60136c95b1a4cdf367089eac6b05a08bf4f7a7dc7dad4841c10f2f45f1aff136. 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/UKRNU1900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc1cf48d84135bab41569bd1ed46707837de327f28fd3387e35014ba7c785ae. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UKRNU1900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd644bbb153ddc185b676a1420c23f532598e7512be4f3601fff95246af3ba902. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKRNU1900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff295401c89a1fd0fe9394eea920ca490c9d7deaec659671355a8f6e4a37969. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/UKRNU1900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b048bd43a63c62eea034b6bf0b9026e63dca3c7e7405d3f7454a65fd6453575. 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/GBHLW1704089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c7ffc7fddf2b032f127b6cdc215cb87a70774340dd47e778616d0047011df9. 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/GBHLW1704091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf315156f68d562831c0a439b4c89d3465fb57195a70feecf5386913663201f77. 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/GBHLW1704095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574b587a6d912754161355a4553bff9d47875087233365277f9efe32db1eb1dd. 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/GBHLW1704107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e4dba1e82c4968d2250e95696a8d833e6decbdc631a8614a74341dd95f5ea2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBHLW1704090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ef3201a05ca74648bb47a20c5520440debdfea6b1281cb7e7ffea129510eb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBHLW1704093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74cbc3fe2900aa5d277b596b339173a671f386b305aa0f647ee77ac1a119832. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBHLW1704094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad91f4494f4b7f4b3eec55916b781c45753b9dfb643887d79fdafec3b7944d0. 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/FISSP1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa152a1731a319ad20d9a053ca1d5a8db752a771a65a3e764e191312640474fd8. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/FISSP1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22000b617e650066382f98969029db7052cf4d077f4a903842bf716defb33c1. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FISSP1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd15c0a8d3b781b2ef27cf5914a54e3ee72d0ce8d04c5c7a8d10edd481f75f. 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/UKRNU2101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e70714509f1bd406f2faa5e5e31c6d378e9ee1ef66e957082674eaee0981bd. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/UKRNU2101060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa907dca909ef78ceda5ac1c7b2a209d3dea3479a3785bcebdb6e045d3099ff7b. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/UKRNU2101065.