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 0x467fe6149b508da1c3d1e610e7231c6429eeec7e58080ef02d28c4017d8eb158. 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/3eecc264-7663-4561-a2f6-ed1d1f4cba61.json and https://artists.proofprofile.net/proofs/artist/3eecc264-7663-4561-a2f6-ed1d1f4cba61.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 0x2a76ccec59cd86ef12691d626228de78fcca2b9238fc426d99db2e525ba9a4f2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE69Z2401296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81205fdc9a6d3304645a6921e27bf8a54f4ddcef8572ab015e2714f42b3220. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE69Z2418839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6e9dcc3a9388ae0c2d8f5af70b04dfbd1808194e6ede710b855d2b2491ffeb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE5IB2345199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dee705a7e6229d858044de94bee3691f9e5db6d840edc34afdfe0f5fec3798a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE5IB2403334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231ef10de6ab031054f2e5acfd9fa16ce91f0aad6b05d371e9108fc504375d97. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SE69Z2301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a76ccec59cd86ef12691d626228de78fcca2b9238fc426d99db2e525ba9a4f2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE69Z2401296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13a927d14ac5823d69512763ecccf4bd50eafe3b2a17d45c09c9bae297cb0cd. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SE69Z2415519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a4afb623fe0ea4dec20b4e7fb9436a313f8b71adb900a7373a62ca943592cc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE69Z2416299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64358536194f39cf312c5a0fd7a10530555691e427faaeefa399ce1c345f39. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE69Z2433977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f34ec11c623485eb594da610e5b5d0d55a37c23fb22b43e2b363341dcc009ce. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:19:57Z), 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/SE69Z2433981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb700cd1510de470288b5c0acde01c13a8790f0f73440a5cc8a29461fa7f28224. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:17Z), 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/SE69Z2433985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd7ebd170c904d60c51ad2748123411cf8e5c0626772f8fe2327f52d78418d1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE69Z2433989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4352930d5b7fed1c11526714bc1d6936a73a7c6c9927d8945ace53e75d1b8330. 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/SE69Z2433993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4d41ac5d3b35053235885339ed6ff88844971c1e5d7448bd6aa08e22aa4f82. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE69Z2436537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75c79013c578c398e108d1a25490080f3c61d9d8288d4926e42093114e22b0b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:37Z), 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/SE69Z2436921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3201bf5b04c81a2b17ba608c382c4fdebf842deec82979ac1e27e46390f4db9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE69Z2443707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20311e06cf26ee60ce8b22287291f2145bac989ac8a6d93a7e442163004f748. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SE69Z2501048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618d2ffc9532d1191128164bfe854da0a6f1010d03200785908c3e879d8b8faf. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SE69Z2501351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49fef6cfa7c47b99f3be4c9cf5dd15cc5aaa8e640efd9447f722464bef9e07. 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/SE69Z2501354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c607e8279ebbe837cd0625f1e0095e76a7ba3579847984e2a4993bae6a367d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE69Z2504879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a0cfc1c2894a5c3b0844be3b04ef1ef00d003a8550b2013ea5d450030a4a83. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE69Z2508731.