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 0x922c798f6eb7ce98f2fafd6aa1f873f6771829889e03fcb7bf1d2f3ad4c29d3a. 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/3827506b-2831-4fc5-8082-9241b378aedb.json and https://artists.proofprofile.net/proofs/artist/3827506b-2831-4fc5-8082-9241b378aedb.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 0x044d6c0b0fa24aa23ca0654de2b43806ee1633006f65ae45f5b28b894b3c3cf8. 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/SEXGF2396679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf082af00742d92534cec8dabc40542fc9c0988319854f014127b58e6221f8dd. 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/SEXGF2396385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358aec18af967669bec8a1cb46b502fd46d26d543661469f69311908f156602. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEXGF2396386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3ab6b2c74d386543ec40fd69b6eac6407601d32889fac27f0789603633038f. 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/SEXGF2396443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce52ff5be53da569a86a133fdb37a5dc5194cb2d068243fb666db59f503b0c0c. 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/SEXGF2396309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4319a55da67d53fd1d545596dc32716843ea8ff4b22d1546fbbe84236a269dc. 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/SEXGF2396312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f19414c0e03baa90025e8bb399068b62c8b28307fce2a8f6e1bdd79cb56c9f2. 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/SEXGF2201809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d07e2d8574c7331d32c2e73884c00c5bbe6400e1f9a4cfbabe6932304c8c38. 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/SEXGF2201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a11080a8430c3412d9da5590294f6c3fede4f1015f42ddce9762884ccbcd6e. 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/SEXGF2201783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b285e73e5fc4f0f59dfa3e23d20df98d108ded1ca622b28e9e2639c08d2b17. 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/SEXGF2201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992b5c8313d34c8405d4cd58c0cbd5e4da7d06997fc00b6d53a20edf86fd7323. 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/SEXGF2201785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3308f1a95c3e4ca24d8068afe8d0a29e0affb9a1679639a540d3c3befa2d9e. 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/SEXGF2201786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e8858b3f5bee897404f2ceadc1f42ffcd8366eea9efe106d1d25ecc687719. 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/SEXGF2201139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523ae537df24facda41e633395d44a2355b6284dcb3231fb034baf8fff4e1a6f. 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/SEXGF2201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84b3749078ca42e61c198f352b528a6f5abf6dc78030ca04c0eb2f8989904a. 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/SEXGF2201137.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50612ddad0a3cff8fce69fa821020ed92ba033c90e0b86506edb79fabfac5866. 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/SEXGF2201138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60bbb98187ee8ffbc09425fb51621a19196c6c4e1490538f27be8b3642d0d03. 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/SEXGF2120001.