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 0x9cb59642b88a68c88bd8fb51c0545f869b16aaef6eb3d6be1ff965b3001ede79. 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/da3e7267-8b2d-4b11-b592-2e3729dfc75e.json and https://artists.proofprofile.net/proofs/artist/da3e7267-8b2d-4b11-b592-2e3729dfc75e.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 0xc6feeafcf498876c9df20ebf30d8e7f8543c4ac195070d3e7ef43f7df4f8a33a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda5da9f03523157b563cf71380ab300b777e2b7d0dccb15f6768214f94fab1a. 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/JPR502200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2251fea472b0190d971fd84f6b034b432db3c9b60b186be00364bfde0fd48b4c. 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/JPR502200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045879819de833c3be4173aaec3db490a1b180a71053c26f5e3e5bf590e9ce8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465f9698acf283be5c5787f534d7f62d6e794476bd9dc7401b4c347b8a27e430. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292daea4e2894e813ea16880dccc2acc262f5ba0a4b90f01daeaf64d2b1355fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4eba193e82864c7b819d73be53d6f9147a522ef118da732a754400c58a96a. 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/JPR502200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7ff1ae58099dbec37582168020f36cb4a97c6bc1569486d4296d96902d7a5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93d5c0d6328361568c4584f3d1d2107e1665bfca11355e523bdbb220475780f. 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/JPR502200393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5c3482e44960c31853b61cf9d0b0967ad823b579a88e981315813f986b8d2. 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/JPR502200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63fdf8beba6a81f3b5b3736edcf4181a61b88a7ec9ffab6f7266514c8d873d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd0f2640d6ec408a1eb7f385dd3174e267a16b2bf7617112f9aef988a92294e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPR502200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39db186635c097c9d0d488f626730568b01f2bc4387e968fd93a55a43380926d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPR502200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb85e70fd3c3e58748ab5bbbcec4f71a9bb18efea8067a324db45e9bad47b22. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPR502200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4baeb587f2b9078c4eede848e2e5d8c33bf7b45227beae849dda96ae56bfe22. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPR502200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698722fadc5ce3e0f00ceaf5fe64b9185458de2d5e970816e8cf58383394a061. 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/JPR502200410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4154f84f3963b9c349e51ce86dab8f468ca8e72134331982176bc1d3635538. 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/JPR502200411.