1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xdf14f08562624a968c1cc9c29ffabebc41d0554c525bab12cafac45e153827a9. 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/b1a43fc0-ea3d-4570-9d99-185f875e9924.json and https://artists.proofprofile.net/proofs/artist/b1a43fc0-ea3d-4570-9d99-185f875e9924.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 → block OTSBitcoinBlock must exist at that height 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 0xa2b8f578b4655e018b4145aa619e16679d8bcf34ab2a228c8dedcf72b65a0116. 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/QZES81905562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7a9756c0552a9ad202e46d19fee11e682daa8be399278ec726f52101bea31a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ72000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb6343088cbae641b4d5e77f8563fff08a8b9af5691cdd1c79223db47db99b2. 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/QZK6Q2027711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cda1892449a7154c1d91160912dbc791b3441deadc2302c56953841999a1e1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZK6Q2008667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44e516d5f80e1d0b28614457e2a7528fe978538ff024b402722b039f676f4e8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:48Z), 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/QZNWT2036467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24400a403aa2097cfa1eb14d8729df960e64071ec9b5dd6115ef5315757a2af9. 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/QZES82174854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4880d39efe7f45a5ebc0e79a51b32103c8b58836f559267b210ec73d6de9f6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES92144921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd431accb497d84e446aedde5c7245a281ce35cb1a94a6935bf3bc745cacf7dce. 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/QZNWY2168048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8438a428bd3b2f604f878fcaa3ae41f85f5998e2172387602f28f0196f8b55d9. 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/QZFZ22270505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe0038cdd56bbe2b19822b7724be132062249a0fed8d9dd74301bd948339eb0. 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/QZFZ22270509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8c16bbf7f0edd16f356278b26bcbba812b3c188d29695ed5d777af0490d10d. 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/QZES52278759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4f33930daa0e43f7a878079fc5431b0a108f8dbd6e78ea9a4cc3fcee85b2e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZES52278760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d38cd034c0a9b330785b49aedd8c1f4f87aa9686377c3881af46238b0fa7e2b. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/QZES52278763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca1460ed8cf958e58433272947453734c37595e68c6249259891e6913c4817. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:16:00Z), 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/SGB502236389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730b95d464a248c4b09fc3241351d751063359ce498e61caea5967acc0002fd. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZTB32220144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dca221cdc52123bdec29c7ca353d04f198b936c9bc816976552cb7559ad2f5. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZTB32220147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401c715209809c7243c0478849c0a3db017062a6a660f29b73e5776d9e1c99d3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/IL6652305517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cccc4fcc9070f7f216be382d6318c121c313d02c12b2730aa6d88df7bad8ddf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:12Z), 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/SGB502344181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f967fdaab028842518e126bb92a5455db7298c832286586cef5fb2e2a4284a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGB502344180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a6464066031d5b4773d209643de3222ab6b2d142fd084881f0ccb328c48646. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:05Z), 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/SGB502344184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f777f7527c9ed34ad72b247edd8293089c94857e1de018f4b2053ecaca090e. 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/SGB502344182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719eff059383c03faff2642ab50ff5405f562b21775208420a72e5fd06352519. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGB502348702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fab8b2fb0a1ff2f3326d59e18acf63de8087269eadadb959e23512117366bf9. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/IL6652307155.