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 0x8f2b2b16c1383ec22544e6507c1c6ebf3f92ab36fc8c0abc9b1e71d8714b0155. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e5823ae-ee3c-4ce6-955a-8bdd810fb229.json and https://artists.proofprofile.net/proofs/artist/6e5823ae-ee3c-4ce6-955a-8bdd810fb229.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 0x76d8457b61891c57c38081d8f88981c243e9eef90c6f1fa7cbefe1464ba42505. 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/USZXT2351011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fb6f41f1dbc98887b5cf0c3356dc621f79a6bf3a40b4e87563460b615dfa49. 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/USZXT2351014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901c9d1ed014279d8f5325b2a1631d7d26bc2321a2a9b09e97e643d22342d1f0. 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/USZXT2351355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2f836730353e2efd5ae085875f184c8757b62d73323b9163ba8c10c7c764dc. 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/USZXT2351036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577074d20cf7ca963146d8cb977e4606005cf1180970fb92e07aa6b25a8b70e1. 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/USZXT2351365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e46633f3c214924cb60825c401c8ca07f2ce171346c9d8b43c48342c527981f. 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/USZXT2351368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889acf2b00d2d9c2960c5a9b4d54719caabd097d20440fad8776c7978c1a5de. 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/UKXN22368325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f6f16b433af505e6b1bd7bc4f6a3530097cce0a04681d33ba0c54c51a8b4b. 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/UKXN22368324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90d98492298883e498c0515d5ab5ddd68c7f15a6ee21abb9a58fbb6b02311cb. 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/QZES82276278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eb5386c4b5782ed4c53995967f562c52523711932b83a01e17b5911b361927. 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/QZK6L2121740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977ac76ef0d47f9807787f58c1aff6edadda085b489b6bce9f26489894d3550. 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/QZK6L2121742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f822f6a422b2a961027eaf612fb4faf088850f89babf14be4b26bdde0a43f1d. 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/QZK6L2121743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bfe17a87e5b5aa13228dd0f158c661d382a8d232c11d6998c7ed7fc1788c11. 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/QZFZ62123665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bace69df55a45df20699e407b80fcfe23e9fe1bb47c29169146b5382ed33fa. 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/USA2P2257703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f7e82547c9ae28daa8a892612f655d32c4a0998e9ff540b1e6af8f82dfa70. 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/USA2P2245951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922773e8c447edaff9130043f50595d7a1e9cde7bc12ac95821eed1ad1eda08a. 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/USA2P2257705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7b8824b4668846a1bfc6b3ecada18c9f209da9ba743c4c1eb6e774ec6903ed. 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/USA2P2249820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c64828fb4f3b2444c76b4a49678785d89f4fa324cb97b9e9844151588614016. 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/USA2P2257701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f538dfa85ece653f83ffa383cc95730f2c4ddaab17d6ceee778f6f2289b38. 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/USA2P2257702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21bc491523d5c3ebb8943d021721bead4158faaca383478563f4a2058baa2a6. 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/USA2P2257704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842f7e82547c9ae28daa8a892612f655d32c4a0998e9ff540b1e6af8f82dfa70. 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/USA2P2245951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26d17057941fcede68641714f59324bb045292646a465f7aa42a702687d088c. 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/DGA072471083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406dfaa17a8d8627758cfd14675a444971cd81b2b039cd65848c187ddf6d7ee. 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/GBQGW2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ce7c3161fd4ace0337c231bdd54a94330189a49d77b01475d89b007cdcc8d1. 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/GBQGW2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8b9f5bb1f2803b8b34397690fb6c4b1b78b87d19fcf72315f3a72d3d894d4f. 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/GBQGW2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a03a9d15d4028a5d88b088c22be9daee53e3ca874c71d4943dd6a85368fda6. 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/GBQGW2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d0858de59bf447b69ccc98ec512e136d9ed243c1db2d671ef6095b12c308d. 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/GBMEF2402513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa2ae20aae585b3f2fd5a160090cb0a64c8ec046aeeea5dcf580b3830571732. 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/GBMEF2402514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f59601621df5834d56a452edd7aaf380e4ee3d60926dac628553d3e3af1ef1. 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/GBMEF2402515.