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 0x38cc823f3c51893ca3e6297be1405bc3dd8163f62f40e83698925954a4f4b138. 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/86c68909-3e2f-4aae-b6bd-a0d2ab0e935f.json and https://artists.proofprofile.net/proofs/artist/86c68909-3e2f-4aae-b6bd-a0d2ab0e935f.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 0x1e9c971755998e9832c4264afb87d93ed00a7f1b95efc87f6b6fd9f3758c2cf3. 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/BCBWG2400018.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd16361ec23117c121c0a147358f7d8de235754ec0866421e8ff4989a0ebc95. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCBWG2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161054b351d1dfb6f681d20071cadc237de9e137727c5d53d3d689e57fd96136. 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/BCBWG2400012.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a3d533632bcf7e8cbe60ae5d0735d95913060fa6789f6e41b259d9f8ae13bc. 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/BCBWG2400009.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9588afd8037b905e8b6cd9039be613d947ff85efe8603c01f7fde9b9bc647599. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCM9B2400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7701a9aa8ebf41e6458370ee8656c920d7ee3450e73638e7d1b9e12cba4809cc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCRIZ2301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a722743337eab7079d7d6c74463ce6688f2c0c184a0e49b2dec1f105b3cf360. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCBWG2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b44efb6bb3aa53ac37f1c5d1631ca9462f3dfac1f40c9c11399290d4124ff4. 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/ESA112427634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2c3b1dc219dbe92a811fa4e5d3456c36b757103d86077cebdc3a8b79ef2ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCBWG2300014.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ce9536e8d01bbb5c94ac576a20be39840f414f3a7212b83f43a1bbcdae0c6a. 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/QZNJY2348349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a98d3abb0531e730a3b8ce2751ef28fac2be133627f9845f06d8392e050f67. 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/QZNJX2304994.
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