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 0xc4b284d1a36614511b0fd0bb4a4c7f69ca31c157ccd87176609f904361b2f3e9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50168e44-a15f-4211-ad2a-f653f79dbf5e.json and https://artists.proofprofile.net/proofs/artist/50168e44-a15f-4211-ad2a-f653f79dbf5e.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 0xe38de47cd8544a27c219de6fe1dbfb05e522115b8cb7819ecea1c4adf2091904. 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/QZAKB2456867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc45ad407596df8f72ae8e15f62638f79f78bc947cebc922a091af7f314885. 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/QZAKB2455309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c324af2fc2ccd0d5ee8c3394bac0969898cc0369fa3be6ed3e749192514374b. 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/QZAKB2450920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5efa7bc76423b55638a7144094fa7267a2286a6b379df544abb301d0dc3f6b. 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/QZAKB2404285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a9eb67197fe8ca2f6fe9d6155e8b7d5f019095e21ae9f978058effc295fd33. 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/QZAKB2372473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de316069f6b1d8666bb403aaf282907212d1c58e04ca4da9ab6168e218491c. 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/QZAKB2366173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3737f2dcba38ee222ede1549dece32fac46bd7546b3a6e5a54ae2c636f265. 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/QZAKB2355138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f6300067780372523e33021c362ac32677804b4816f70f4cd7d2f2a5d03550. 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/QZAKB2351596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a477789305875c3a9aac193498ead10c7a9a879129c46d80fe728235df99594. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2345302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefa8f3f8cfd5f16dbe580e397f17b4916ec7938416d9c52f6b79fa3878c6f68. 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/QZAKB2345303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c99adedcf06fca78b584643595965a8457a5a90f07d1d3f75f9819dae93231. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAKB2345304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40f306bab1bdeb244fb760aac3898b58625f61eb9a7a7ff9fc657c59154a847. 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/QZAKB2329435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dc520a5ae1e4d1093872f1fd9049b78f41beb0219a6dd6fae0a86addfab699. 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/QZAKB2316219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f5091c60392a403231ddbf30968c854be064fc3c7fa7fe92fe87a65a9606bc. 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/QZAKB2316221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc380c6fd638bdc4a711e876d43bf3f9b03baae54a1ce3be436e30db337fad991. 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/QZAKB2290847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c66509c25c9ab30955f9ca293336cac92acc6c1ea231286b7cc3c9466802cf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2290848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde961925061895e916b7f813796535511fe63f130114bda225611b14dfc1f01. 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/QZAKB2200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3add33d1f66064cc8d355dbdf080612618a99889b364b7d1db0f317393c79e. 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/QZAKB2200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7604786a9327ecd7bdb18d8bd65372cd85b0f541ebed2b186c06194e4646f3. 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/QZAKB2167396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f18d4562a4bf81dab091a9958a4c7d751b14849d1344b349a6fd5facd004a2. 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/QZAKB2167397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0333aab3197a32c3f2f37c808e538eeedbcfbdcb26c5d6a40411d91a02dca7. 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/QZAKB2166173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040ce6ae0b55b3da0448c4b87f8679225cf6e69044a04922ae38ced67c9b05fc. 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/QZAKB2166174.