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 0x6d49ac25c8081f3235ee59118ad1a368310148efae77e615dd654fd00e9f151c. 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/fbf74834-9d6d-432d-a780-48b18096d289.json and https://artists.proofprofile.net/proofs/artist/fbf74834-9d6d-432d-a780-48b18096d289.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 0x8526e77802a1c42adb487f10e4e2fbd2ef6e730d1da0a5d363fe266f0e76eb49. 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/USWB12204102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0de3103875d41c78afd019532a32f38f818e7cdcffa897ee29b6029f8cb849. 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/QZDA62070540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10dc2192f8e05094e03cc65e55ff8236c133f11f15087d048565033e22c820. 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/USWB12105822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28a3f88687606e800df5845fa6d4a640c59e77f68a8e484cf60a04bd9cd8596. 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/USWB12300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5edf7f6e847bd81be9190024c6458c0f9e1e44ce798ccbbea976be7059e0c9. 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/USWB12300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7711076cf63bc1bb474b5bfb5dbd2eb68c4c886556651699508d1975815fcd62. 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/USWB12300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b040330c3f4f730356122692d61dd57695861813c9e56b537450f7cf009ac0d. 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/USWB12205957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83fcdcae111158de42800654e55f372840481e29e4e6690b481170d6f2aa6b. 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/USWB12300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2921d5699f102c7fe518551b60140c2dc7d25614f8d47b1f5af512891c79d4. 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/USWB12300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7008b40313292bf96fcd5241887be04a5d0a265cc4177a8b70d498d1875ee928. 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/USWB12300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83fcdcae111158de42800654e55f372840481e29e4e6690b481170d6f2aa6b. 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/USWB12300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd95e024ac0aa4ae71b142cb38168ad46d240fa2f142cba1c35a4442039248. 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/USWB12303252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b040330c3f4f730356122692d61dd57695861813c9e56b537450f7cf009ac0d. 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/USWB12205957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b040330c3f4f730356122692d61dd57695861813c9e56b537450f7cf009ac0d. 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/USWB12205957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc60190039afb35eb6b54135cec2820aa7bacee377f1113f230692cb067d289. 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/USWB12105782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb562b4d46ef43a5b2cec7293a44a5897d76fbd9e44fa265a23fd1c417ccfd16. 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/USWB12200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6744a53ce3b2728a18d7e7ca114e99ac5153f3c29e1206b8bc806de0e6f1ee1. 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/USWB12201178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a896de0806a5386c9a87ac58d33cd743c506dafb6512bbad880024b804e6fe. 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/USWB12200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71335c522cab7a6bc9b1efb0bf9eae5e6b381ca0ae59468b905843967c678501. 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/USWB12200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48dae6933d18feba476af730f0ec2cd1bf36f0ec7a2e5bc2951816c97954323. 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/USWB12200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f10dc2192f8e05094e03cc65e55ff8236c133f11f15087d048565033e22c820. 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/USWB12105822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ad6b38dce279472192bafcb2decead7353fd63b91020bb4629ff6489351911. 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/USWB12201179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f456456236ef82ab0a01186e4b66364e279caef5771ac34cab955701e4e5c3f. 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/USWB12201180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0de3103875d41c78afd019532a32f38f818e7cdcffa897ee29b6029f8cb849. 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/QZDA62070540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871bec51c83dc75ee3911704787e74755020e82d8ec73d35f1299ed5417c7797. 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/USWB12201181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd459f36caf9ca904ff504e0197aac831cb20323da79a2975a0278462b9c7cb5d. 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/USWB12200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0de3103875d41c78afd019532a32f38f818e7cdcffa897ee29b6029f8cb849. 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/QZDA62070540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ed3c278f0f19d7df25fe87d0af0edf892609964ff8192b1d052b8216f1ca9. 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/SEYOK1759285.