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 0xfa915b4642ccd7e4a15c3392c9b747f8a25fb9d36370e014bc60cb2dfe5cc8f6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c411592a-8274-4414-ad6e-8455920fdeba.json and https://artists.proofprofile.net/proofs/artist/c411592a-8274-4414-ad6e-8455920fdeba.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 0xb0902f633e9f49017e5a6ce4d0aa50e26916d494cf20b48e135db91c1b9f0d5f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DER411900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544d137a48ed7709d2bf4ac1821186c29eb6bea30b9c40f3cd39d20eb38ceeb1. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DER411900351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c3205f347f66f969b3c1c27664671edce0a7b0d5e585407fde4b6af5b01333. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DER412200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707223c56c83503cede7830d217bf3a6c45c55f8839efe85b2f446a23f87644e. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/DER412200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15d997d659171b4cd44be5695a0a6b6d8993e9c326e7f291d1aff6bbd0dea5. 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/DER412200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268f3fd527f7802c0406fd97ef2fd96f1be4586da8adca1a778980a8d935b3e. 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/DEOV42400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb540466b97441cfc044d508a4bb8920ec82a4eaf1f7ee32173d6f6bddde8aa6. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEOV42400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268f3fd527f7802c0406fd97ef2fd96f1be4586da8adca1a778980a8d935b3e. 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/DEOV42400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bae1e60125bfff4bcc9e27eb37e57de5451f9e4d56869649c4f1758b882d67. 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/DEOV42400887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e6590b85b0dfa7b2ff93bef22fce1e36964bfb15a1b7a157724a7f85914886. 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/DEOV42400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c36a746c19a2e56cef9280745726bb5fd6e9abe84982ed113104947eb2460. 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/DEOV42400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaaf8f9099410f074bab36d65a521e00e9d29c1e4dc059d67ec71bb2bc3d3d5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEOV42400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06f72956d3852f68b1e8b9133a95d5523b680164de1fe5a819fc10aa5bf641a. 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/DEOV42400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966e147e9f555d726a4fe937e06d92edaf0b7c12dddfd4fdc13fc816b16cea37. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEOV42400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8314595bdcf65f8dda29a782ae68a9a642c78b24499f062a26880960c9d09. 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/DEOV42400893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb540466b97441cfc044d508a4bb8920ec82a4eaf1f7ee32173d6f6bddde8aa6. 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/DEOV42400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd9507c86796fc07f28016d92b234b8a327ab572730bab0bec2b73c1ced9398. 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/DEOV42400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7224d297e5d22d744782ad9439ab0a03d1d24c50c362679dc719c0f3092a717b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEOV42400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6268f3fd527f7802c0406fd97ef2fd96f1be4586da8adca1a778980a8d935b3e. 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/DEOV42400886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e6590b85b0dfa7b2ff93bef22fce1e36964bfb15a1b7a157724a7f85914886. 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/DEOV42400888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c36a746c19a2e56cef9280745726bb5fd6e9abe84982ed113104947eb2460. 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/DEOV42400889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaaf8f9099410f074bab36d65a521e00e9d29c1e4dc059d67ec71bb2bc3d3d5. 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/DEOV42400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966e147e9f555d726a4fe937e06d92edaf0b7c12dddfd4fdc13fc816b16cea37. 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/DEOV42400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b8314595bdcf65f8dda29a782ae68a9a642c78b24499f062a26880960c9d09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEOV42400893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb540466b97441cfc044d508a4bb8920ec82a4eaf1f7ee32173d6f6bddde8aa6. 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/DEOV42400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd9507c86796fc07f28016d92b234b8a327ab572730bab0bec2b73c1ced9398. 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/DEOV42400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7224d297e5d22d744782ad9439ab0a03d1d24c50c362679dc719c0f3092a717b. 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/DEOV42400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8bac0ea9861400f12350e0b1925364515e6be3f264433006cbd6dfe802638b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEOV42400897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a0526a83c7011bfc026853b76eedb440eb2c3f57be509b55e65fd2186fa8b. 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/DEA892200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f1b61c18455b227c001d21340039aadc22835710258e434c32f20865fc643f. 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/DEA892200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fdde37bc97b11cd20abfc2e53520ae9d0e6bcc6f8ed33575dd08e61496ab36. 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/DEA892200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a797d33a9bb5de07807cb83de5cc4650466e02313147cda791db930f2f597a. 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/DEA892200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c97f39a68964f4f5f9ffbde93bab2191f022a0ef0657724f2e034c73646ae. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEA892000055.