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 0x2b40252ddd21a8b104230432840a52d899a0a2fc00f96b7b464f29a83e150508. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6a6d8d9-b304-40a0-94f8-a689f5115215.json and https://artists.proofprofile.net/proofs/artist/e6a6d8d9-b304-40a0-94f8-a689f5115215.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 0xcbd46aeb18bb7a8a178dd68b28ef1796c6bd32a37e73060deab103619bc42d99. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEZN82463118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921bc550a30c4b81327b924353273e6cad4fd4fe10002577eac2226135b41e4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZN82463112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13097093032663a6dcb395a7ba5014fdf04440dc60e6a27d0ad0aa238035056. 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/DEZN82463063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63d8db53ee06cb8695707f1f734eb3676d7a6eb7b5a44bcb02f2466ea9f94f. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:01:57Z), 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/DEZN82463096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9885ee78091bd2228a062833f8509c911eb6a39f148795d542ed45dbefeb7ea9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEZN82463108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf35a3b707dd67b9d38f81b7d3ba247e9a99a0cc2ec939c857ff5930f788187b. 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/DEZN82463116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fa2ff39d82a09087d16913566e14f27a3f3c27392d17b59fa5fe4f2b91b356. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:21:06Z), 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/DEZN82463094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef80773e1020f9235e4fe09243afbcff45f6351f97e3b46d1a37bcfd783a665. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEZN82463088.