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 0xa78a7f94e4716592085291c7aa86dd1ab4b5479f332d31c12e59504f35f3f3f6. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2686fd6b-e307-4d1c-8223-9f3998065e25.json and https://artists.proofprofile.net/proofs/artist/2686fd6b-e307-4d1c-8223-9f3998065e25.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 0x258ca054ce6cb8891abdba8c12f79e278be45a13da509b8a2f030016a8792f21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKTHD2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44106e2dd0ac9e8b1a52cce93aa04ef2047318e2adfcb39295c370129163f67f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BKTHD2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dca19caf767170498f9ee7f7faa91fd0291a835583ebaa2c757f884a884d84. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BKTHD2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19368ffc0af5351b5c287bab7d2cc6c13c6e446a3e97a3a99bf0f9a49a581a3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKTHD2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab79092e520005cd7768a51260e1e5c0880cfa95c96bcf167a97504d604de54. 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/BKTHD2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006f2a875b7b90144cc343b207cb89cf29e3aedf2909f3e370d9fc26682377eb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKTHD2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e799150451a3c2c1086c391fd087a6afa2740c556dc7b46b8aad82ecbcea76. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKTHD2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74084a7869f7ab82099d49e09ef05188e89b4b22ea465033acc760f1c646f863. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BKTHD2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec62313df74daea9c03140b6b93fbe42e097fa08b59ead2c25d4e6fd43dd4c36. 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/BKTHD2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd113e52bbb24a02e1dd40975a4bac6691a42d85ed1b966dd59033682376dc264. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKTHD2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f9b74cedcf55c72b131be6596bdbd622c149640cd1249c834c416df2fa96fd. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/BKTHD2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fddb5bd406ff3bfb83d8088f6bfa1e3506999edcc0401e0bfe2673d6a157a3f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKTHD2200027.