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 0x32679274111ae60753663589fd0b9231e9c2fc295a58fa4fe813b0db6d219a49. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2459f58-ac26-4158-ad5e-a7dac3c742f8.json and https://artists.proofprofile.net/proofs/artist/e2459f58-ac26-4158-ad5e-a7dac3c742f8.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 0xe40fae13dd6fe1c19ab875f52ad5190971378ce262c06b027e2a34a7948f10bb. 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/ES5152300907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01db30b601fc3ba0c1b67a030b05bd71a8a26cb3e6ed9697e9263942b76642be. 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/GX3Q92096165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db9e2dfe38cec5fe2c4fdf2ebe292bef6095c587b862fb850eb0300470415b8. 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/ES5152300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db9e2dfe38cec5fe2c4fdf2ebe292bef6095c587b862fb850eb0300470415b8. 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/ES5152300442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d3af9c45c5efc1a5389fff82a3cacafcc8a9485610ae7cf10785775617319. 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/ESA032017301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c1095482f4f1a83de0fbb813ae3da8861d9b8e2ba159c5ceb91fc23e515ce4. 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/QMFME2305890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9132a1e42e3a9cd5b070c0fd43a6e0db541cc4f673be1c2dc2f90e3da80d754d. 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/US7VG2293891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c02af698e8d03441a23516cb859b521cc30baea9dfc52552e45790192aad5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES65E2100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72a287036bf608e441e31283bc3ec8c349526677d2b9665dc389036be958463. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES71G2122451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b142ff44e331732f45d3a69c13961c5481e6d279477a167b902a7b899147693. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2137682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1255d12dd0445ba48bf66a329d8b50b69f4771a7db930e25621912723d061f1f. 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/ES5152400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414aabb7815b0271dddb2fddf7a2c031e861c1fce557b85101c84668e631b99f. 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/USA2P2200946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b57c23f21696c6bb149c139251f27cbe120e225f15f3cbb94126426e967925. 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/QMFMF2333060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c08b3a15f51f58e901e529bfd0ce68ba352ea3127123da3506cd82d375a355a. 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/QMFMF2333065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50c68f3a987defd8cebd6d51b430335349c30fbfce742fe4c80a3d4eb3ece3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDA62359885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135329800eed952e316a0694266ba1611c292e669163c04920a4eb712c26b76. 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/QM4TW2367636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec9504f2aa6a0546e2c414cc0f7b859758e29e665a6dc6245565a038f4ac072. 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/QZTPX2295905.