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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x1923f6187f263569d7f93630c02e29e7df8eef69994931fa27f9eb24529328dd. 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/86452527-9622-494e-a804-53a717b34a81.json and https://artists.proofprofile.net/proofs/artist/86452527-9622-494e-a804-53a717b34a81.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x8ffa57226ac227f5eb03b8261ff50100a8cba454dcc168d040171fbd11642282. 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/PLI366878321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8470a3c61cb26bb290f5ec1bb1bb7aa1e137d5c0d510361edffdc97aed589. 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/PLI368900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e1c7f70f2aae5b8daf3cac6142eb75dbff0e87573ffb32b4b2eaee21ad47f. 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/PLI369071200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19eff4cf9f509efded1889b5a0a0763b76ea52cdb5aec225c694d767295fa2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLI362842050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e1c7f70f2aae5b8daf3cac6142eb75dbff0e87573ffb32b4b2eaee21ad47f. 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/PLI369071200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e0c69756a733fae52b39f07c2139a037fcccab61e141e0bf0484ab78bbd8aa. 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/PLI360242180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf601baba3d706ecc1e8959b48e1b8a48befb5bdb59a0d4158ddfa8ff73ff31dd. 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/PLI362842070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89668c85bca45f9f61e0e382f042ef579847a49cb678f499a2bf6c04b2a2d975. 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/PLI362842080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b8470a3c61cb26bb290f5ec1bb1bb7aa1e137d5c0d510361edffdc97aed589. 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/PLI368900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46522ce198dd6249a8932a9f18873e6dd44bed98beb982e907ad8f958e2cc6. 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/PLI360622010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465b3f27ebbbb13450a75f616cbdc3133a37f9afc054454c0d49489048dfd4b. 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/PLI362842110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262753396645dc3ac11248de2b7d826084d2cc0a7c9fff9554e729fb7b3ac4b3. 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/PLI362842130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918629fe3ad00946d73ea75e9133d9048b7eca856071f3133dcd47617e15f4cb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLI368658370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ae19330984b6bdbf4ec37c7a1d4d7d9ee190d2cb787822b9964267eff73bed. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLI366983700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d28589c978452f77b4c8266aae86b463b45c25e63181925f226211a0ac7cd1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:09Z), 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/PLI365500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa57226ac227f5eb03b8261ff50100a8cba454dcc168d040171fbd11642282. 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/PLI366878321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918629fe3ad00946d73ea75e9133d9048b7eca856071f3133dcd47617e15f4cb. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PLI368658370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19eff4cf9f509efded1889b5a0a0763b76ea52cdb5aec225c694d767295fa2. 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/PLI362842050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1e1c7f70f2aae5b8daf3cac6142eb75dbff0e87573ffb32b4b2eaee21ad47f. 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/PLI369071200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda46522ce198dd6249a8932a9f18873e6dd44bed98beb982e907ad8f958e2cc6. 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/PLI360622010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdefcbfabc71c14d7e3578d1981bee981275dc814cabb2c54805fb4db722df78. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PLA552500934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed27b63ea0b7195ce1dce1aa0f0a061307185bc848a5a1537a4930fdcf34d148. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/PLA552500979.