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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568f8e3ce8699b0e2087f8ece54876796fac833026089031e6359400256a76a6. 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/4bdc63f9-054f-46d8-b167-5c413009b12d.json and https://artists.proofprofile.net/proofs/artist/4bdc63f9-054f-46d8-b167-5c413009b12d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db933e9c46167fc015d84d37c09d612acaa0da54ae2a32ac5be67a30c3dfb72. 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/TR0011100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18770b2ae31faf2ce0356985614796620a3db59424201f1fb2cba00181023b8c. 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/TR0011100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231f19f8d2f5b187cd264a6d458fb0f060d20c49df6abf16322287d3d44b294d. 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/TR0011100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79eb5248483503e00acd30a0f06f990a07aa69d94a31c5979f9b394f8a9a104. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TR0011300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075b52bc22750b73444e17108a59643117e3ab073131934ebcd73164dfa07801. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TR0011400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e363e563f430e2f425e89df06f220f68312318057ea73bc1aeb793495be05c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TR0011500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c2f0ec9be7ab159904bd3b12d841689fe666521d669df88d60cd48b31efb66. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TR0011600892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cdf4d591e76925304c73908d44edfd852a954e7b9d7fbbd2ccd2bf8c7aa0c7. 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/TR0011900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c00986371a1b552a1d11bf517d532c2b2d5492e1fab16ca296f0d659492513e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TR0011900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4ed8e2f83da4762f59a6a14ef39cb3fb2803a11a59179b8c0ad4210b3c3aa2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR10S2032463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd2b7805f09f552c5815be897c1a126017428055699b196f4d18ee7c6a7be9a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FRX282019903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7fc1cbb583b05cef854eda0dee59986d339e219e60baa08bb60dfb6c834bb4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DGA092377906.
Seni Gidi Vurdumduymaz (Nostaljik Versiyon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636f0e5f913809d829e5bbf07af9f3868b821635379c20b49781664c3a40909. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/TR0012400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08817341d50654838fdf6e259ea06cbe0e2ca8a57a39adf05d2392745f989bbe. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DGA0Q2413261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0870192ec92c34a394865a31458075757d46b0bf39753b9f9341c9d0377e50d4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR59R2515149.