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 0x2d425d8fbfc79789fbc91a950188666974397eae42607856b18e85800a1ad644. 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/21357264-5194-44e3-a1d2-bd2e14837c6f.json and https://artists.proofprofile.net/proofs/artist/21357264-5194-44e3-a1d2-bd2e14837c6f.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 0xf4558c90011fcdf47794cd7748b18b3c48dcf2c357317c82f8eff6a0b90e1ed6. 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/FXQ892200052.
All About You - Récréation & Ødyssey Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903cfeecf31e9931d0b913a5b07444e4c8153b1b089ac413fe80691b4da0be25. 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/FRR642201377.
All About You - Nounours After Hours Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a7b406a2339a77dca6305f6d0cc71c99ac46e2019918fbdfda6165151a6b7. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/FRR642201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4e0dc403703c9bf53215c0065c8070c9b840a2511790567b4183388012895. 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/FRR642100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f4ddd3eb2ec63b37ebc8af35751b5857d5caeb87cd481ba302a97b6cca0da. 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/FXQ892200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ecebdf0088c3668e05c525e5238afa44ce2fd2b95ff0e900ff377d74ff5bbe. 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/FXQ892200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8234cf79d8d0c7a630d4407f8159616d795e3f2741cc6967f1b553039849f210. 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/FXQ892200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238b3be69bb30b050958dac04f3048c759a35b371ee6c56753be70b7b9bcdedf. 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/FXQ892200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c96f2b118fd68024f8724684a388c72f14d00b2f6e7e1d3dea87d0b936677e. 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/FXQ892200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b68d838f3c9de3fbeb4e81f3c1e25eb14faff45d62ff397c0620bf94607859. 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/FXQ892200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e278abef78f6864f7d4d95bf563f6785447c3b145ac2121b95b99c27866d2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FXQ892200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be8ec1adba602134c82c698218621594e3b5efc96f69ad6f90323d125f0b99. 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/FR9W12036238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91c8467d449bedc9f0347b77c2acf50d2289cfd60190006b59254e47d3f6467. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12110223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc846bb3f8727c19017ddcb8d6c42a901ab1439f4bc03e6a91c987b4b9e973cec. 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/FR9W12010047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5bdabf8046d26408f9661cb446e3054e3cb0e583704074c74a41abda593cde. 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/FR9W12022537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf805ecaaedb1ccbfdd2ed4582db7ec8dae7a06f0af2ceb1014e385ac5d2602. 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/FR9W12010046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e62ce1f83260cd693f4c4e01ffeba15d7081b85104560cb7e0e717ab259a358. 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/FR9W12005475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa3945887053d97252bc36f3bd003747dd361a4417e9524ec8655c8e5d57e1. 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/FR9W12000753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379f48f399c175c83a616dc97af5fca8818afd81e302cd42230658f01aee5e2. 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/FRR642201770.