1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd0f10ee2a6942d32a7cc7aaa62ba6c50bb60c4ccf695b838583dd6da55bd9618. 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/ee4b6ebd-8692-4a5a-91f7-467a79b49395.json and https://artists.proofprofile.net/proofs/artist/ee4b6ebd-8692-4a5a-91f7-467a79b49395.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 → block OTSBitcoinBlock must exist at that height 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 0xefa22fe784ddf0113d2c9b8d749a4ffadbbad3202de9f51fa9fd921079b18fc3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FIB3E0600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc474166e44c3d555f4bb47f925a35df5ad087542831015ed32113eba4917463d. 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/FITTS0900067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b3db0002e9d840f8afe4b6577a9e1cf468fad34d4a3416740f424f77e6669b. 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/FITTS0900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ac479c6396e9c0f5403572036687a436d077640aed9f0d87f6344ed732658. 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/FITTS0900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07f9a3d902e7e5d71e63638a78ac40203f62d548ce28d4e3bcedec18f950e8d. 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/FITTS0900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee997c8a420b6349bfaa56c10a0e728a45a66463ddb58c81195d5dfcacd0ebe7. 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/FITTS0900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5511cc92666242dbb9f1baf491b052da5cc9063ab34c36a3a9c4838ff9758dd1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FITTS1100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855c59a90c77ad82abe7c93ebe56584bd5adc864f46ebcbffb7b80ac6282405. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FITTS1100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c2bc3902fabf1f40d335b2e07d62a4887100c235ed6d80665ff25f3f1e744b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FITTS1100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111cacd04d5d55a84755d4d2de9af76486ecad2a45ee15ff2b2dc6a87231d8d0. 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/FITTS1100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa705008b41d6522664fc78105f346556dd4fcc474d81af1abf42f7f4ed2e2b49. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/FITTS1100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52940ae94123cecbfcbdc1b3f76ceba835abe6c75524e1c4ee9699d28dcffa9. 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/FITTS1100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5511cc92666242dbb9f1baf491b052da5cc9063ab34c36a3a9c4838ff9758dd1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:40Z), 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/FITTS1100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc855c59a90c77ad82abe7c93ebe56584bd5adc864f46ebcbffb7b80ac6282405. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FITTS1100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c2bc3902fabf1f40d335b2e07d62a4887100c235ed6d80665ff25f3f1e744b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FITTS1100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111cacd04d5d55a84755d4d2de9af76486ecad2a45ee15ff2b2dc6a87231d8d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FITTS1100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa705008b41d6522664fc78105f346556dd4fcc474d81af1abf42f7f4ed2e2b49. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FITTS1100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4966a2360b0676c6e00548de1e2ff1153873d094668d0afc10932c0733f0d1b1. 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/FIB3E0700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a728190f36968e43235c96366a7312bd8ec007e3e2b77a7b071f4f611a8639. 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/USHM91304976.