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 0x9fe9799ff1e4a6e8fa99151e0341d9c9de9db300487f11a9ff0a027da765149e. 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/db87d7b5-8f6e-4ceb-a4e8-45298c5a09fd.json and https://artists.proofprofile.net/proofs/artist/db87d7b5-8f6e-4ceb-a4e8-45298c5a09fd.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 0x5f2ce8293407f4f1c2078770c34166ab612f026422eeefa97818a63c22daa4c3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB2GX2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffced839ad3a759c842c1d23ac77e12339e2632508daa678d0435b31385b09b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZZOPM2108939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6caae60c192f8f39fe3531f898d4fee4a061d4395c391ba59c2f6d22637f31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6TI2176826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d05d5cc057fb79430eb05ab0ec5e92c5d6a39d90d3682524c617fc13bb6289. 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/GB2GX2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3d3d802bb112468ab2378d1307abab34574080d978e1691589422efa3a4e09. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2GX2100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726c33d869508f0a23cd0287df9f532ce409e8ae12ed0a7dca5ddd4b9d035f41. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2GX2100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d05d5cc057fb79430eb05ab0ec5e92c5d6a39d90d3682524c617fc13bb6289. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2GX2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc9f4bd3f05ef94245440d51d4c59f376df9733f6164411686f119a49489e5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2GX2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399304b2007557025886862bf89da282c340de58620c470ebf98d51f0ed7922d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2GX2100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2096a81d6a7ca9df6d2a5230f652b6056a496beb24853b2119e5bcce46400346. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2GX2100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5d47f21f563e0344189e4dddd58ff3f0fa58bc5595cbd68e658c0ad8fc17bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2GX2100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0973cadbb72f44fbac05d9dec3ae7e41c2724d45e11d8c6971c332a6ca257ffa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92341844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800bdafa7389273aa8b131d139cca0040241a743dca358d733567a48a7ba6d0c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZXT2351008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc5e1a63bba3f0c25f6c4184c5a838f461b91c4453a289916ae407effe4bd5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZXT2352242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ea799155e20b94f94c639157db024b2013decde7f90ddc71095b0e7ce46c8b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2DY2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ea799155e20b94f94c639157db024b2013decde7f90ddc71095b0e7ce46c8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2DY2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c100df503616dc1d50891e68eb5b6d92e29c58270078b3f95bceeecf770eaa3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB2GX1900379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380614fd13cb270be0bc778e8c49b0a4a0dd4732eaf608ea3a5d906fee7c7f0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2GX1900369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e6d810d58488aaec6f42c3388e14d7da8fc70224bbd67ad03bd713822dc9f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72308768.