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 0x82144c5d183684d090f14eb2d40de9b1dcad8445e54562cf0984c2933ec1d6fe. 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/9e3503a3-075e-4836-bc06-798827e0253d.json and https://artists.proofprofile.net/proofs/artist/9e3503a3-075e-4836-bc06-798827e0253d.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 0xef463640e39286306bc7a89d45be22b160096d169b02243b5b9f067c70fbddef. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BAA052231218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e2124915e1bd9fa9310e9155eeabc7ab90bdccdb58e1651c283f2bd1309014. 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/RSA042400826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf38534ca2bb5e89d4f472802e051416c97715c5441a611a922248405a2e17. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:03:29Z), 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/BAA052231225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b70dacf6acffc59fe17f76d5421ff6c705880cd4ed72f729dbe9dd295d20218. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:52Z), 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/BAA052026267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3223065c3ec3c1b9e032ad2b1e66fe8fc88fbf9f1cd2d9f29ff255445a6f0788. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221813123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40198e535d45498301bb9fe29c36049d2cd7b1c848c2cc81ee60d9afe4f3347e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:36:35Z), 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/RSA221813130.
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