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 0xf5cae5f17ea0ac124d16d542fa3ca6496cf4cf8b29a51db9bb1368d57c4dd61f. 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/ce6883ba-5464-43b9-915d-5268d4a26006.json and https://artists.proofprofile.net/proofs/artist/ce6883ba-5464-43b9-915d-5268d4a26006.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 0xd31bc361f9538487c31ebe9eebe99115547d0c94e8eff0d899e325b814bb89c4. 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/JPN900500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055bd22a9b3629a6e371b958a9f4e10518ad2438e007723a36836394a0ad68ec. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPN900501570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d32c65332be77d88a207d66d30f93c78ab5130a489a382574c6457ddf88b330. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPN900600790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfab96c408e7a6258386d322388b9e28ebb7d98a19cdf60b2ccf1b12481d9b1d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPN900600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b7d514a8259cc73cce13b8e831985ea26815477ebfdd0d426b809f8ba9e1fb. 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/JPN900601730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c83d02d52c2c6162e2005ae159260833edc08a69ce6fce002c12f5c6d0c99b. 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/JPN900702140.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b9f06ed49140a1f03d7d236dd3ad89112230bc109357e26afba5ec26a2a15. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:03Z), 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/JPJ901321750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56941dd7d62f8ffa162d1d669073878db5cc211136308326d5597dbcea80cca. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPJ901321800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1149306d4429f67f123026d69023eb0ea8ae006e9cb1bf81586adaa82bef2166. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:22Z), 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/JPJ901321840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63463d3c6b37a4b453ca8a3c2bbc28bf74ead4980f2a370b4239f30e9d4ea4d1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPV501600507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a8f3baaec7904203ff6ed0739c5f5b61b960069fa72632d9fb9634b0902b3e. 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/JPV501600508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c25bee487e24e4ddfd1eef1bae01e7914c5cafe50876667a2add7fc5e40180d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:39Z), 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/JPG101700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b848d86780170bb4e427dd6e36c75cc658cb71812de362fef4c82905f1dda90. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPG101700153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758e5f771eeebb0756259ab29e0aa983bd2951d88c65105e27df8082b904e4a. 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/JPG101700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ce51db016adcffff6dbdb65666b597b2ab367d63e6f2e477c776613bebdd1d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/JPG101700155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f73443bbd88e7cc811c353d3b757ac69c1b47d6bb55414b913029ee63bd913. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPG102201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b88df8c1eb978f61c105d271052755cb31d636851a22a486aca581b619303ed. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/JPG102100718.
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