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 0x42e4a06bd280b0dbf18fcce5ba1a8f7aea11f8a68d115e3e31775b0f03e80eea. 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/4a7724b6-0812-4172-bcf1-9a3328f38090.json and https://artists.proofprofile.net/proofs/artist/4a7724b6-0812-4172-bcf1-9a3328f38090.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 0x483fdf85b7264326c068ffd7c7f64754da133c8431b41ab172b70084fb0e707d. 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/DEZC62259270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec1e9873a7ea61b46b40f4dadb49db42552ce64513015fe669eb6f4e9df14a0. 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/DEZC62287338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512f091acb49f1f67eb85ab8658a0ed5680d65b313f3d4b08c38057947d9013. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:49:48Z), 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/QZMER2367349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ebdaf6824dab5a306dfb852dcac31add6f551d9dd1e2340b6b2087d47fac6f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:58Z), 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/QZTB82334955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4142e24952f26d3b04741d0a84ae4acf41799bc786cbae900284fba4abc7cb0a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTBC2361155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed5b020160b40cc1698e12cd78c1fa4b7951dfc304b10051ea0db8f3f669edc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR2394980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4b31bb0043bad3269e59cb7f2f32f43f29e776b06994b7bc98446f1c82fb2b. 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/QZK6G2497284.
I Swear I Saw A Spark In Your Eyes Last Night (But Maybe It Was Just The Streetlight)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f04090b226f3c863720ceea52134045904edf8fda6714ff545101702601bbf. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:44:46Z), 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/QZWFT2520998.