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 0x6c367c44856ae3a7ceff8bbbd0bfe25075b09373e03345ac8a67fcfb1efe26bc. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/988fa63b-ecb9-40be-a72c-af0758a3b14e.json and https://artists.proofprofile.net/proofs/artist/988fa63b-ecb9-40be-a72c-af0758a3b14e.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 0xddcfa4eb771e6d3806cb039773f10966bf76feb2b8c5139ecf7ed92750f7160b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XX2390717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3025d38a8bb45b312a136a32321b558742c405c956148de419127267cd40bd. 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/SE62M2310623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac737f51ecff2fe8ffaf8a39a32c05c6680884b89a9f7eac52c1987820b9126. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:33:22Z), 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/SE59D2308901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cd763baf874e44df47265fe9103209c904ff4bae4048c1b7a71a9b4715c74a. 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/SE59D2302701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f936ee6157928a9c5c735e04ae546ab340a9e0ae4c3f0adc45c5a061aab2bb0. 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/SE59D2246201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484033228a5e10fd1c220803b8a51199d72e9a4497432853211f063342bf298e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE59D2225901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50871ae537584b8eaf7584711ef93b54f4bf83fdf9d804785fa3b9aeaf363014. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE59D2201301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf5f54a0be8cafdc9abd34c41abe85ac337460a04930ee4ce5b799053ddf325. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/SE59D2158401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd469a2184c19fb8cf9e444e2aa95a7fafba62188a8acb0dc4d4ea3e148b12561. 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/SE59D2140601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7492f8b1c3371145d54c6af802ed8b4d4bdcc73afe6a110bfd3830aa2774b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEYOK2035654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e29a3c1389cee6fab0316853c976f96338bc89b1119fcdd39a585ec54a7c024. 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/SEYOK2026110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb2df4e63c499c40f6b5323d18764f2bd9d7b0ee0a493ed71ccc78070058816. 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/SEYOK1905450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05f46a4b3ceba36ff6db15144d8e6e4c733c40659afd995cb666c9ff43c6b1. 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/SE66N2349082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543f3e0d8bba42fd36a1f6241b1da492388899a9e630bc550b3ba62d69484d1a. 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/SE5XG2405616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05f46a4b3ceba36ff6db15144d8e6e4c733c40659afd995cb666c9ff43c6b1. 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/SE66N2349082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4486a6da851f82eef63b068498836a0c20795eba90f7d97f3b76e37ec6a532. 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/SE6A92360320.