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 0xfdeb0ad1ee553a6141e52687874387c2bba444d09fd2bb9d484cd436a98e26aa. 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/9f399c51-0965-4201-8178-79d57342fec7.json and https://artists.proofprofile.net/proofs/artist/9f399c51-0965-4201-8178-79d57342fec7.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 0xd2e676696754cb17ed3a867c7aa17ea6118d9cadfb80eea356f7e102a6a5c587. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QM6DC1601585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe60be8c82f571c4966b4a80a9b50fa7e329d09ca9166267e2231a5a392df87b. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QM6DC1601586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3246f60fa68512edaea4bdd2bf601ccdcab9722bd95f81b80ab4c62195a2bd7e. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QM6DC1601716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e26199a579e73f3e2a8b007e833d673aa63272f0950697cd26c413531705c71. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6DC1601717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ad84a6bf1bf9c29f22d59dd309fb7cabd070ff0174d7619c8ca9d1aeb9ba03. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QM6DC1601721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f177e20b21fdeda87864e001fe97dba4f603ea5d0a4b535b9d282aa5b6283. 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/QM6DC1605416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8776e2d94ba1ad9fd7bc9a66f8869f1f5e3fd0a7527d3aa3c0dcd9bba797b8. 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/QM6DC1605417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1e8f3e0fac4ccd887ce4fd50fdbd6a865673747f86ee4749552b467ff3fa0b. 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/QM6DC1605419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2101beae2b692fef23add1d9a2a5f55580dd9a9b03b849887f3ff76da83e2c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6DC1605424.