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 0xd5e0c4bee1dcba04645046a9c4bd4b3476f6cea75e5e32f4ff74f8e9ecd7512a. 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/4421a785-e903-485b-8e09-dd40aef3ebf4.json and https://artists.proofprofile.net/proofs/artist/4421a785-e903-485b-8e09-dd40aef3ebf4.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 0xbfec9c345063d14576b702edf82fd194c377ff337f63b7ff68f3259707b7a924. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:16Z), 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/GBVNV1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaed04c97915da078f34193875a616a18d65f64e9768167504549b729d40f6e. 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/GBVNV1700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f576cca002869c511ff74f59ef890b0c3c021e31cac93df6fa3e61c8912ff30. 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/GBVNV1700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528294e8595ec6c16242fac349e004d23957ec699f940f60276b00ecc158387. 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/GBVNV1700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39dd2b0c5bc5bd2b3d43d06aefaca2d484988a70a2f0f7dfa3cd99dd8757bba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:11Z), 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/USA2Z1811762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f0eedeee8d9a20f4f40b410dcab0f9c27235a1c3fbe6374252e96ab971544. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBVNV2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6972bbb3ada7a3dd44bb9cd358eccc440f63a48723436ff8640a0f24923d550a. 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/US38Y2446301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f0287e91e20c1072b69844bb0d8d217a47fbbf478c1515a329ea234afadd9. 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/US38Y2446304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd1eb98f6e5424817b08a3a30a205b47945463e4b503a2b8880db15c1ca9ff0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/US38Y2446307.