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 0x91c85d2b78992a066ec27f671fa16bfaea2fff797c25a277ea2968364a854b7a. 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/b03ae469-4d41-43de-ac5f-8b7cdbe1f1e8.json and https://artists.proofprofile.net/proofs/artist/b03ae469-4d41-43de-ac5f-8b7cdbe1f1e8.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 0x6108e3c38aa7f8a03e331762d9ec62900c86d9ab2549f024511938bb0fdb7dbc. 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/PLUM72200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9426056e246339332a42bd1947174ee5d21cbde2fdfead257210c27fb97e3015. 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/PLUM72200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084bbf61700b73858a74fabcfdc3e37e7183b9ee318c4a27ec4ce697fde176f7. 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/PL2DY2301264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20bcb6bb876f1b24d34461ad1cc35f18d78d16edef88b93f94f69d3c2a63952. 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/PLUM72300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774c1cb2c783f3ca82377d2ece420c3147a60a92170e6edb24a22bbc0a16f5d. 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/PLUM72300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2366787243687e8fb4c888da01d3cb1123899d3ae6208ff508cdbe04b5b28e7. 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/PLUM72300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811fb3b5ddcc2d35204450c02975bf6926fceaf7e0a3c5baed55b4f1ec8e0cfa. 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/PLUM72300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d000ccde2f6aaf83d39484952f92dfe43b70532fa649694e7716c0c9226760d. 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/PLUM72300405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8020fd501a532aac2406e6ff82ade657c72d3c4b6775c94ac8a137b6d8de2f8f. 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/PLUM72300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa07804fd04cfd6e9bd3f5e5d8c9f262948f70a87b4fa10d92e292e9da78bd2f. 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/PLUM72300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b732a462cc6cd4114c1bd34d646ab15c9dcedf1420b1f39fe7c4ba092a90c. 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/PLUM72300381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d81c176b68bee5da62d002d624ed27cf0a27c31f89be63667ab20c475157bf2. 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/PLUM72300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f03bba12f0cb8d334d7e690efe9d7db8f91c378bb02ff1dcef6e46443f16433. 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/PLUM72300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20bcb6bb876f1b24d34461ad1cc35f18d78d16edef88b93f94f69d3c2a63952. 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/PLUM72300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9be584d8bf232188fb205983d2b09407953f4c01561bb1ef57a0b6dcd6f97ee. 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/PLUM72300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69f03d863f52a27d1693989df6ea81a3082588957c27a7fe83ce0749837fb6. 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/PLA552300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e5e4fe0926910d689c090b4c5152ea10ff3bb608b5778cf03218ca582616e. 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/PLC062361266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8994631bff2dcd90acf5817d7df9b9e46956a242423d2969539ea808eda8f5be. 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/PLC062224462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8994631bff2dcd90acf5817d7df9b9e46956a242423d2969539ea808eda8f5be. 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/PLC062224462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a06cb4e98a30d78adf6da9b4f80dd992e2903dadbcaa2063e3f7610439c6fe8. 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/PLC062119163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f82c4786d33f12d2b87eeeb455666c9dbd054e54a6b04be4ae56925903c11. 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/PLA552200487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77a80d0712b44781f10ab5442b4c10f6102ed30510432ec1c9d88ad34d8ed92. 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/PLUM72400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913730f5a651e998b5f3f27b1ee0fb0b966466102103cc37fcb648fbc6397256. 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/PLUM72200772.