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 0xf7d0da1ffacf336c414991cac16fa338215243760f89a44384fd956ee54d2815. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c47c1f-c99e-458d-bc2d-8e9595fcb085.json and https://artists.proofprofile.net/proofs/artist/64c47c1f-c99e-458d-bc2d-8e9595fcb085.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 0x6633af824df43ac49b11f0c6bc906199b6fff7d09476400c53b8667a405c59c6. 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/BXIED2200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafe5c586d8a371bd3e80d22d255c855a6080928106b33e38e6f47fc17542273. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEIW12100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd1e83705707e3b6c13cf179c5cda31c75580f87fcf33a4a0ffc964a8e3532a. 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/BXIED2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe247b50e355af991d39cc6dcfbb493d0c4bbb2429c8a6bdd00ac46ab4a578bd3. 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/USDM32301151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6d8011a943237c0fa0c756003b67a73fb18939d16baee9f31c536be87063d6. 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/DEXO72227803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5180380593b9717dcf02d5b83eb473da5e26aca0a75f52582b0b7f7c1407d0. 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/QZNJY2276240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a207202ef931865571ce1e99bc26bdd7304a30eab365e2bf1b16a464536ef59. 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/NLZ542101818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b3a03dde7e0333b81da00ff2f7bbabf05e2ec85c494786b97904fb6b91a626. 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/BRQIZ2005015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d91ff0a2dbf08f09bcd9efa9d1c9006640fb0cd2ee8ceb0115ccfabb72a027. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXO8O2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6d8867223ab822a46a416c4ecf2cd52ee773cfb95593b5dcb4b81af262059. 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/BXJZV2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86acc367353774ea593c6f69e67c0dfc77c062c1a81f4ce0bcec2a38847bb052. 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/BCAAS2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4724503553a2d839bd418ab5ee59a3f7f54b30eb0856ad93e9a48cd44bd214c2. 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/BXO8O2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffffc689ea3342ed3d78283829b21a45074c35ede584a1b94cfd178459b16b74. 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/UK4ZF2400019.