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 0x4b606f3c2a7099523e3ed1fb6b5d37e192d7d7fc10e7165c3dc5933b3e9195de. 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/05c18604-8932-4526-a12b-fcf98ab73214.json and https://artists.proofprofile.net/proofs/artist/05c18604-8932-4526-a12b-fcf98ab73214.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 0x7eb82c607e34437c1996f437eaac22caab14d98da362cdd2e1c70c1b4ff6d968. 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/CZA880500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465fe157514d09c673a2a5d13107a7ec00befa055e275e6af1b5b5b65d99b9c0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZA880500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36513235ccbde3b7b7e70bcc599786dc0d78ee8e6dc331f813bacdc3da67da32. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CZA880400707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088dd5212e00a008671891b6c30104cec40504af127d09c2004903c4115aba38. 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/CZE850830002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162ae0878a1911f5fc8adf07365652dffd67e9024206e3619c112fbb501661c8. 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/CZE850830005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d616fc58d6945a3366da1eaadde9185efae2cd3a9f0a98dd78e295956dd26f. 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/CZE851140001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dde54290c160b1c8b40c0a1fe0c85609b02a2ca81a465d70f4adb1326ba75a. 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/CZE851140004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1270563ce744b4b35d15a5a4632521306cda6d862889deb5beb67321a2bf9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CZE851140005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef02b59c8d3c7d7a72471c90f2b060cb6d37dd210bfcd3caed30d3e1e30d9b78. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZE851140009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecf172e41d3d9fbf8528229b93cd545736d5aa8f3bed19a65fa580710b6f378. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:24:26Z), 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/CZE851140011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2de9e64e273c4a757c12fe8fd6bb5817b5c8eaa3d8554eccc11f51f13b0b15. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CZE851140018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0728b9d60332e32c3b6b41a8cfb49730ce0ff10f5580eab78b71d1196c9b9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA161303446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae375a09a1121ac974cf9417cdee988426a3d545ee2e39514a85487ad40a446. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/CZA161303451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b47c31752a11694e7bc6d6958211e298be5d1988027e9dd2b98f0041774262. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:23:24Z), 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/FRX281927910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560366d79a491725958031ca9a5b714f25f6ef35343a6cfbc2a500ffc64a78d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX281927912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8188539b874ec7a350e1bbc5ff84681e3b85948c7ab541a2f9994472be588b27. 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/FRX281927914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252809274642e64e1ff0899c8df5f0c2b56f9fdd66b07a57c810e88b1a90aa2. 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/FRX281927916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9166ca7121f4ed216c0daeda56c60f0e969d04b663c90ba442ec7912e51363. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRX281927917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a2706721dbaba40cc9e398692d808e00fb353edf83de42c13a4f1db82f0b72. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX281927926.