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 0xebdf15fde6892370257aec0cb9d8d4fedd0ab1315cbea06a0821c83c02b07b21. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90cb8f94-0a0e-48e6-af8b-34533a6da855.json and https://artists.proofprofile.net/proofs/artist/90cb8f94-0a0e-48e6-af8b-34533a6da855.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 0xaf5dd14d3da36a3a389e43ad310508c0eabc50118f1bf44e2bb816751951ab7e. 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/SE6I32152655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941aeb1883e8f9fb67c17af34df16ee81bdd42b24211208f0bcbdb51e3afbc9c. 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/SE6I32152716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaee8724e5349aa794883f88d96e35be84a8a94de7a1da4f9d3be1eee1b3df5. 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/QZNJV2167292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9877cc0c2d9e604c548378d4bda3f50d3db3e229f3e81fa1e515c3f38c051844. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2167293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc0f06ded5b2674eb961d34e5b5e79463b69ae9936e8b31d15ecbb22285d7b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2167294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc3b685f9ddbdebcf1beec4ed8a0654c2b3bf2a62dc6577c67cfc3c1e1fe2b. 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/QZNJV2167295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473cc3d77043652ac974dfee326801eb70b5c17497d6853295b2d17a886030b3. 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/QZNJV2167296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b726f2a9fc7a091007f224ae535417732eef7e754fecd4dc503254f3915fd37. 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/SE6I32186450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992c83763923ec4f66beec40330ee2a04b99eefe29613fca4228f238a4c1b90. 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/QZNJV2167297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d41846d9ed09f15e6c343089bf1f534151f13fab9be4f31843fc4b6ceaf6dc. 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/QZNJV2167298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061609bf3fa422b7d69088493e3bd212647a12f6dd24a7bab43666f0e2eef74. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2167299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65081c3eea5e59db70bfcd1e0e9b92f6c1a2214a610e1f5ae622087919fd4b30. 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/QZNJV2167300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95043127592e831801c8c20fad1352a55207e8648faeccdf5f7ec99d6835ee9. 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/QZNJV2167301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686388694695261e7a298f114a4df8f0e30ea8d6de52798e00752946c88fb4ac. 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/QZHNA2094293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84cefb0fe7dde56f0e472ee50c06c83a355138f8275428e27f4ee299babd746. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEQ2301058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc04ca90ac86d173dfde97f218ae3c09f997411a7eeaec23473b691c3de5a2b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEQ2301060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43843583d697c432341fe113d00fb3313c3c787ae3ef8551273dee83f8ea49e. 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/QZGLS2022552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ec14e5ca85f917c0d5833a7722bd9f9b05297757d028132ddfdb37af8fa9fe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJZ2418898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cc9781d6eb75e739681648652becc03cef7d9668bb0dedb88337969e7fd2d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHZ52218564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c645012fe0f35f77b447ca13c8bec1d99ae8ae5ddb9ae3d5a29fff8d0c61a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYY2125697.