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 0x16677277ed241d6863a89f554f2dc6b53ccbd87d8610ca2115114da55c6f9960. 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/afb79016-3382-4225-955e-494b4042e1ac.json and https://artists.proofprofile.net/proofs/artist/afb79016-3382-4225-955e-494b4042e1ac.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 0xe13acfa384364af25a344b758bfdd80657a6cb8b281812275b88ed1eb3067c15. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRSME2200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af24b6917243e517eda67eb77fd8e73ef344b4e460591b35288f4ed1e4e7541. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRSME2200478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a92199e3842f39bfeb4927105e436850fe876d452a1d32db29932cb5814c23. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:43:13Z), 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/BRSME2200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52ffcf96f5a3c8c81be2d7ee9a3ae4ce4140a764769522e053bd792a6ae2b96. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRSME2200479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef8f51736c81ef45dbbf91780113573412d6456f55bc793201428b4d0c7d490. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRSME2200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70b9ef8ac6bea19d9d837ea22bc0dbcb54cf9b17a9f7036e2bb6077a057b17e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BRSME2200482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d204b098547e66f5a79026bc56c78e11c29ac36506305725de0e81099dc16c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRSME2200483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed9234efe653952cddf1144494b72af5aa9cfe0e82e1032f4444c81a2d795df. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BRSME2300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a82ef780fa628e0ec805dfe28cdca5a5c17398b14188e9cf6340a039c294c6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:42Z), 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/BRSME2300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7d35546a121e3caf837b8f2aa413012cc7b8090d4443fd9847c49051d6b6b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRSME2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dddb5bf6950c2e3cbecc3f33b93d05fa84528a902b5155c08892b979499e0b2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRSME2300262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a04c94a8d1730190e0e618b9a42d92a9efcfeb9212678502800f27c51ea85bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRSME2200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae01ca1b5ba99127968cb8ca91a07bf4ae0d722901a184c209e3c270c11fefe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRSME2301990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896e2b465d1b9b3e0f2d9a71c28ae25a7d6b158760d91659eb2635d69636c51c. 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/BX4RR2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022a421537ed425f3c9276ffa5cdd0b592ae24ca1cd58ebf2981840199a0d5c. 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/BX16L2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1415b14d26d1ffd1aa2631dff914d39d8d08fd6679e7fea3f1adcced79952cca. 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/BXU0A2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9370baa224c1417e491c9882520b71ba82f1952c3aac7c0e778d5d2753f3b77f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXU0A2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9370baa224c1417e491c9882520b71ba82f1952c3aac7c0e778d5d2753f3b77f. 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/BXU0A2200008.