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 0xaf9a119bb23569a3c320b6ce807caa2abf11e1748b09ec1e11b14e282ea9ef62. 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/e73fa75f-ed05-4441-b951-64547107ea53.json and https://artists.proofprofile.net/proofs/artist/e73fa75f-ed05-4441-b951-64547107ea53.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 0x92107759b68e03ec30f511386e916e0b0d0b3b9f87a589b262ca06195aa6b5d0. 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/GBQA21300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003d0b28c66a92fc769e71188b6d468d8ff28813e1268c5d10da15a15b852b97. 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/GBQA21300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b5e08ad75b05662784bd7d6147cc4e03d88aa0604de8912e4b389531083228. 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/GBQA21300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032dcb9992c5d56ba1c3dc9838a7f142cb2282f5f2998b6d7332e41d45e2f59b. 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/GBQA21300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712362b11f6258f2a7d74fdec149e81b7e7701c44fe5a4be49402a5404b9fb69. 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/GBQA21300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d849bd2c71bdfeb16a57f4c6b2baf3cd38a97f4e0daab0c82af0ea8a0c5388. 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/GBQA21300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68718d18ce2aacdb2e76470cc1e4b78866b8db620e5dbf4d20f60960267debd9. 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/GBQA21300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e9deb3510ffbd12454863699d148bbb80312c78ca8c3dc11c78b6d17039a76. 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/GBQA21300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17288fe67edf77c20547e0502fe8d0e1b38cf8989bdf1fe3dbbc87bbf59a389d. 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/GBQA21300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d4290a5e53549b1619bfe6319f3c437944b5265883475b3b848dee50d1ff23. 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/GBQA21300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258208263ce90efdd0fb9072b3beba412942567a572fdfccab7ab9affdce7188. 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/GBQA21300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b1a909df24f014e80b86084f68cf8f36449b9e4d1db89f7928896633f80a6c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBQA21300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6210591a410791572e6178aa7e215eb38ce0490cdf18283fb0c4ff82d67fa204. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBQA21300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748dbe5a6b95b4f2e499a557982e68208aab18caaa18a7f47aadfdee25d99f5a. 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/GBQA21300314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b4038949012fa2866613716b29c269ab00cd92eb6d10f74f38ac1888a5efc8. 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/GBQA21300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b0568016d3c3d19d945c77d6e0cca1a725d33bb21619333aa2381217f2a53. 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/GBQA21300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0be6e77c7f9547d06b4b722c3f089d818c5c17ff2cd4ec8243ef87dbacd14e. 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/GBQA21300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d2bf65c76c63a2cc2880f4da361ed3b322dd02e38c5ce3761915b73f2a74a3. 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/GBQA21300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f550cabedac228a5e3dbd327e0469611b5bf52d11c14e3c34691ff4645bd6e. 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/GBQA21300319.