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 0xb50dd2b7bb90ca5eee1c16a59b0939f8e0976b31b94525bb014e882c757b85d4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3dc8221-ee70-483c-b246-93c42ff8efca.json and https://artists.proofprofile.net/proofs/artist/b3dc8221-ee70-483c-b246-93c42ff8efca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x26c23c3dce8bfbaf15c5a007a73ed18a6c91b1f2d310e7048f3b627d053bfd22. 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/CAM460408112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bed7c121c4ab20d6f0d62a578cdb1fec15f5352985eb2bbb3d5214540a0ce7. 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/CAM460408111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e03e5c6b2306bf70352841e6ae2a97bcb08fb53f9556d28e66a4a7126e8e25. 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/CAM460405022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9725f2edaae64428e571499ccf57502028f9cd1f849564e9aa168d7851477d6. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/CAM460426132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb237e6b724f4deb7689da53931018cc05f387f80c0f8d1670d21d87ead73a0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAM460403144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13ea1ed862dc909bd82ef67d1e7a1421d399795bba4a21319601158318e5de. 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/CAM460407269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258cb6e9d63d08f2a62bb458adc55eb0a5eab785511ecc9adaa2443e814e1d7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:52Z), 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/CAM460407979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f08000d78de7372cb908f2753c1b75b9cf33eaf9d20a906406ddff0cce7e7b6. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CAM460434258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792e3b8c021f4bd0d7233d0385802758a0eac735652507f10007fd1def3748e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAM460435973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad12b16f2777b700995db12648b17e4a456f1a6cd0fe82322d40a86e42b8651d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:22Z), 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/CAM460401454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c3161f71e6f38fcbddd14a3fa9683460d1348001e7c1eb302d17a88a6fef10. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CAM460401446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79d5a22dce96caf3e196041195992b76b6c906aeb969c7c07195a1fbf429590. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAM460408020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5787e97bee7d51bd32b9acd4b552a3165128598744ccfe872f819dc06fd536. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CAM460407816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dcdb2ffc4e2797302b5e4a9de879c41c4e3189e618e5d31d38d0702b943c00. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CAM460407925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeed7b6dd213c8f13496327158f9c7c3a84dcf5bafd919b96b9abb73bd26018. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:54Z), 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/CAM460407984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f21daa014ace10605909e77f2e9e9c4e1f65d093a8a7e04b1557965e56edc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAM460407988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2534c9a7a33332c194085253e7dea7efc846d69a0374ab92cc73f3d14447eb. 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/CAM460602866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2486568d3af0d0804b2626bb73fa5a188f169a837c2e3d0f5e8b95fda91eac78. 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/CAM460417694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcb58270be253b6522137f9adcdff6ddd9d7deae3b35837765ca48f625ef9cc. 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/CAM460401394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3156110bfdbbc5c67ca2f595f83d98f61869d9df654723596055d4b99304c92f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CAM460409961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde006490e80f88884096a9f4ddb59a12528ba9a1cfeb9a73246b7877fff820d7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAM460401447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfeed8e0554f21c09967d02fab686b25b0d4679f550bb34956d8da5ea21d22. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAM460403152.