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 0x74fae60a66965c76ee8ff84820bdf2ef1a50180498d728e8241096e55ee9787c. 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/41e97f03-5007-4b30-9dce-1f7e1826d87d.json and https://artists.proofprofile.net/proofs/artist/41e97f03-5007-4b30-9dce-1f7e1826d87d.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 0xecd914e691527668dcfe6766649ae912a85042b8275ba4320a9c2e93cd229f88. 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/DEZ901601250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a03fdb2a3dabbc03a11a9e511e6a24291234269bd3d9e35ab965081e6f16424. 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/DEZ901601249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc798844dfad6105cffff4c1d30e4b99e02751a7faf2de6dd303bd9cf5a1a4b. 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/DEZ901601247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f6012f65e0871d9c231c4d3e2e17cb1d850aa959003ec3a80c1c0255253c0. 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/DEZ901700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33151e41842086453b3edf7326302025eb70cbce0d23d15c42b3ee832b5a0cf1. 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/DEZ901700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebad1deab27d52cc1fa6c42b4e1c6336aeb8ca167a44fa959f6346b1d892f59d. 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/DEZ901601255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190f4e4a6371d899cb3d11564664173458d545c4117b2bf669cdbdc7d1f46c5e. 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/DEZ901700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96617888e9a4b9adedd5e083f69244c71beb9bd419f534b3e348bf2ca8ea56. 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/DEZ901700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f56a961e4a7bd8145faceaf80ab3f4b7509322accc0adc54cad36aa1e9f67ec. 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/DEZ901700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730dee7c0a263f100b84ba3b8523cd4b6b250a7b11a298ab0c8826fcf6d94195. 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/CH7812410135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402819f4af797bacd2dbd6690c8729f6c07bca50eb51e80ba19c5064fea31309. 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/CH7812403619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c7211336e91cf242b02438566ec6b47cb086c4a8f2b46fceab667471a18cef. 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/DELH31900587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe192ac7b43f2ce29414f156bd0d4f1f536f4555b4aa18a7125f17e05ff79595b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/CH7812373157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bf8335fdb505035a7b6475033eac711f18fb8b5ff3d5b92a4ce00691ee086a. 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/CH7812372895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ce486754878aeb8468c593cc6ba5007c6192a9c3cda913ed48d9d5534c3486. 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/CH7812358928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5e074e6153d23507a30fddcd65a54784431b5b76e4021a6b42f224521c5aeb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH7812357775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79541a9fefdf0dd7c247be312bccb7596c80914c2c25f995d45d8ee2b413e464. 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/CH7812355039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b48b2a8135d9512033fca0a2fa507395c92ff08750b21dc02eec7723c4f81. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH7812345165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa857229971f6c3ad5d7c1483f4f26bbed49a7e176784d902e2c3b475b8fa0f89. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CH7812342730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dab92f8ee72fd22aaec4c6b1701824f79b79c4db3c991662a20c1acdeb5a12. 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/ATEJ62200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc16efe40c675b9db89b3f19d873892a5ea82da9730a793f5b4d9aa56132324. 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/CH7812218393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c5b5e2b3b4ebebd892c6cbcbc6ca92f80d296d3b3df9d8383edcb59ade9b7. 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/CH7812217375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543d7e922fcd0dfdf195f8a8faae91ee648bde30ec0dd22a6aeab62f84cee7c6. 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/CH7812104817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543d7e922fcd0dfdf195f8a8faae91ee648bde30ec0dd22a6aeab62f84cee7c6. 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/CH7812104817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca12df369127e4902547756f4f1539d2e7308922d6beb54c136592c975fcca8. 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/CH7812104819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6039ae4a8f369f354209cb6f1d44c119f222cd496ce46188fe32b1cf87d089. 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/CH7812104816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ef0cba8788ee7f6e2bc330b0095a880078b8ef48526737b1209130027c70e. 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/CH7812103836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6874c25e75c8dfc2a01de9e110cdc39142ee66fdc29f16f6cf7cd79de6240419. 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/CH7812197916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adf3c0622567a9cbf04693fb6689b8db35d8b22c48b2d6baaf77baaca1ad2f3. 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/CH7812548257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bbf211bfe697d9d2a84f021c3a8693daa29c9fd93978ce5a4e7c866f36ab47. 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/CH7812543278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad80f56e539e18170bd468c9b9c28ece99eabae01ae8ab0cada8d174e2121d11. 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/CH7812540243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1745c92d45dc3e5f12dccef044df12e8ed5fd9cc197111840e56af1dabae86b. 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/CH7812530603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98189b8d7b3f02546bd43154dd65c36fc143aba74a6ff3ef675787ece5a76c1a. 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/CH7812422134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657285acab946f7ff5df9703101681aa75ffeb1a1d17d5becc048e953fc7c2b8. 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/DGA0L2425571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb86b1f2746f76672a7435a1ea061fc371d956d6ac9821aa7f9c861326c95ef1. 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/CH7812413544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12b21df0cb720d482481c947ebd28a3fb703f206062000e7b15ad4e7c286138. 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/FR59R2032727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac225daa615040692442aa3d9fd94f11ef153e9dd35905763ef21d39c414677. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEPI81901006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e71ac3725f48e35d3b11161a13977ec4be16db2630f3ce09cd229cda3762e7. 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/FRX282092446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89f29dd115af1c10c68a9628063f9fe30e7e6f74aae0144250ec35215039fa. 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/DEPI81800297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d58b7c1f8193a61e5bc4b18226989af7b29245323539018929962cd07d55e1b. 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/FRX281929173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5131f08b25a92944987fa2dd540c382a43dd04c360e97fffd710fba3dd8e88f9. 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/FR10S2097208.