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 0x6259e6e4dd8453e04821e9ac948136674a06fd34ffbacf3b37de31cd71923202. 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/7d8a5401-8f01-4768-9e6e-aedd69106460.json and https://artists.proofprofile.net/proofs/artist/7d8a5401-8f01-4768-9e6e-aedd69106460.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 0xc90d24829b37be6c46257c691361caacef28c0d03d5e7e57249ba4b69d314916. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU6567239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bf292b100e3bbfba8708d312bb16d3875fee2b4461c5cf3c18a13bb8904e99. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU6567246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c10f64d5e094cf1924d83c619d86f39c198c7d68dd7d684387574c81f993d1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBSMU6512151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbec755d50b740072eee6b62eb25ce8de3148a804994a84da8f77c45c037f8e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU6514718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f86c49c4d219953968c88357e8a91ce4b56230ea385fce8f462d5a8b76705d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:40Z), 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/GBSMU6514722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd66a805f28233290552d9443fb65ce7197eca5b773299f6fdd0a718d208214. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:05Z), 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/GBSMU6514725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b642cdb4218cbaa46f3f052ea2edd94b9ada8fb2f05eed6eb176510a2abd22. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:49:01Z), 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/GBSMU6514726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc91a0b7064ce4996491e62992c85063544e3fefd7c3200db6bc489e8de1efd6. 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/GBSMU6514727.