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 0x12f10ddd7f32d1527b3512a027366e3455c7cd6e5f9bd5f773592d980c262d78. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dcd6947e-34dd-4977-904d-22e0ccded244.json and https://artists.proofprofile.net/proofs/artist/dcd6947e-34dd-4977-904d-22e0ccded244.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 0x4a3a276bf3e57bb48cdaa474d17b1c1cdbdbfbc62ca5d166b8a262b8771e3e05. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:30:59Z), 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/GX8LD2502350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd97a848cf75c88ecd69374d7747785f977864ad69dfdd99cf2452b8cf2d0618. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GX8LE2538223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70277d4d5e5a8c2a05fa53b08cf6e294bb373b97d580b1d5230f744dad9993e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX8LE2560389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f57e5b83cbd9000830dacb618848368e44c28e0e218879ab46ce66831571b0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX8LE2515130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8fb0f441a4edd85c03c29a0f4ffdd6c7a3514e54c956539e350205952b8f1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:24Z), 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/GX8LE2598985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0859b2cf5b10871f7eaf335dee8fe96adbe11d9f8c6ef33919660591010d0b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX8LE2553725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3a9e4cf298d03d738f5ffbc16645533251af1e8d8b2677f91f9e1770bfe8d0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:05:44Z), 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/GX8LE2549258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ec6dd9b624332026346e9c6892427b92bbcc516384a42a830a6dff082a11ce. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:49:05Z), 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/GX8LE2532436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f8510e03ac252e8dfdc15dfc3ad839bb24a79547cb8c1790318b508a5ffc18. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX8LE2566180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13b92968a87a8287bc433b70d1ee5813ca41b97d8588e365ef13f8e916fc5f. 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/GX8LE2579083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dcc121184d3476e32ea95ceaa68eb079b1d4799904a859d46ec73baf947d72. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:14:41Z), 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/GX8LE2585964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed33836aa1d96f105668228ff7251a8cb546bd9b26fedc0df15e115a235b4d5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX8LE2520027.