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 0x31c7a6611009635cbc355d54b8b524d4bfbb3bfc0a03102dd40379ee362cac8a. 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/f37ccd19-559c-4aba-a435-cf6f6f986ed3.json and https://artists.proofprofile.net/proofs/artist/f37ccd19-559c-4aba-a435-cf6f6f986ed3.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 0x0f8022bf90131321f77aaef9e8d0a6afd91c955f9ea10d56aa20857c2526baf6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA472115674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb934f65c15b2b799bc3159d37645e1806290aaad7d24fdc9efc035a29959d54. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/BGA472115675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7751fe3c4e294cb1eca0cda4d64a9ddb5eaa9288f53420e8b8ff43880d4765. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:33:10Z), 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/BGA472115676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad125d9d879cbcc4cf7164a176321ae402ba85284e9758a743fafce7444622d1. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:54:58Z), 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/BGA472115677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6770aa1352d006c8820e21010f792c7464e110e57a69b2934e78a2b55988f0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:23:41Z), 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/BGA472115678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd90505409eaf48ae5a52432dce73987a7278571469d64de36ed6dd2bb9edafd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BGA472115679.
Over Beaten, over Kneaded, over the Floor....
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061fe4385450e1fad4bf892327b9cc6c785d45a69fdd0eac72fbb4970586cda5. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:57:29Z), 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/BGA472115680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b98e0d1a2fef50002b9349b655faf5a7510a476a1e9f4b7a4f49dd1518a2ed6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA472115681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7097d7ccb1735c5cd777bb523d5a8ae15a40258940bda86bb9e54a989f8c9d80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA472115682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f856ce6172a73c4f32701c90a25f0bcdd48f70fb152de54c0e5fa10bf9ed830. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BGA472115683.