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 0x7ffbf352e852fe6572f04778532bdcb038d0e0462d4a4bb518a96a49721b59f9. 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/89276e7b-8c94-4133-93d6-47918d5e619a.json and https://artists.proofprofile.net/proofs/artist/89276e7b-8c94-4133-93d6-47918d5e619a.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 0xd19a70a0e0cf0da3f2867d08b92da8d780ecd901e182a0a07311baab1008c4fc. 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/USCGJ1795551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe888dc5ebc5cfe799bc5127cae5ac5badddeb3e1ebf70f5d075d180abe4d51ae. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:22:20Z), 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/LTC321800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194a1c7ea60d44e89de17eaacf682bb70ba4608229c58542334d985fe0fb5a8a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/LTF272100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ff98c746a47e156336a146d361886b1f63a2822655b3cc0dac77542fe63edd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/LTF272100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f31ef18509d16251c2651ba5226baa1448c645743168945f660ebf41c853985. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/LTF272100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4fe74e2a51097ce05816dfcd753dbe14b8df904123ae6a46388cd21817049a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LTF272100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545a7516b48df3bf3f12d60d8aecd0a64927fc1d19461d1bdc608cc766e1daf9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWT2578635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7ad7c836e9bb1c6a1154a6a4e8ad5eceec91f1803d10e7a6d503e869f501a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:20Z), 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/QZNWT2578638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2f981de93eaafe76afd1c688f711ae3e12733b75213f39833f48b0881a61b1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWT2578639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84754bd52b18f158c2fe9bc38ffa7bbefdb96ce237a9beac7afe4b9e203c290. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWT2578640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef36d4e90c1ce26b992cc1443604eb9f9dc14048b28719c85b0cd35fda1389d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWT2578642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9656781960a105c482cfdac8c19a96a44564d6a4730569bf21692eadeb43d. 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/QZNWT2578643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf733db371dc813d0a2301f18e9801a96d6cc2866a9f117e70c2960a81bf083f9. 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/LTC992200001.