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 0xa84a0ac5f6275a9c1544b83688f75d151b3ccfde0bb6e57900c7c39e1a7f4de7. 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/ccb7e803-a15a-4847-b24c-ea03bb0b1ac2.json and https://artists.proofprofile.net/proofs/artist/ccb7e803-a15a-4847-b24c-ea03bb0b1ac2.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 0xa4c51fc967934fcd997bd66a7bce7c1b3e012f5a6cb1af6461a25349a2350645. 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/PL70D2200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56936dab1ca436308524c2c8b7241688fb46dd077dacdabfd089047f0296658c. 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/PL70D1900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f54851db1ac0c93457b58db00bb6e8eaa8570a02a60613a93d5a9159ccd68. 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/PL70D2200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dea54bd596f22f8b3d7298a42867354b08ca30c1352cfeb204e2cfac884d45. 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/PL70D2200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2317da3e530a876aa1cdc53948d931a7a33700f26e5703812d1d13e5177c02f. 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/PL70D2200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc728f6fd34567cebe9a5f76d6903006a5e98ba518b71ffd8fcacbf58d8da12. 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/PL70D2200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ac0ffb419e9589dbe69c45f7ef29b84619ca77fe3dbabc49dfaadc4351b69f. 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/PL70D2200230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b0e3a83f12aed97d93635ba6a2319bb568f6e1afa5128541a92531e1bb81e6. 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/PL70D2200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c51fc967934fcd997bd66a7bce7c1b3e012f5a6cb1af6461a25349a2350645. 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/PL70D2200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063617d35519b781942c3f76bb95870864c0997010b743625a9445ea3f9f6ae. 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/PL70D2200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33ef7bce344d54056a436f616892b9e0ba4262d95b548afea402c39fd1ac3f. 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/PL70D2200221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9573bc80c8c0560ce4f461e1794d57aeb3e553fe72c48713334ab0b7a87207b. 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/PL70D2200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6976d3c802b3eda7a3e4a392800cf433a4e3cd0c1b04f851c568af61e23ad7. 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/PL70D2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7a1650bf6f380a79e6ef98008ddd90aa7e67588d5f4e1c48467ce5b6321d87. 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/PL70D2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8c162f89d8af0d081e1f1482c19a5291217ee67f6a5506dfb59ba230a0d4d. 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/PL70D2200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92d43302d3d0245de12983a8d48247ae85eb143e6fcee114bbf3c423c9db507. 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/PL70D2200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2945bc7e6af3e456cd86d534ccfa1220dd251b8eff2debf108dd7937e7db1d73. 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/PL70D2300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238cc9ccb5934fe6ea8a4f1d855055a9ce6f1ca487c02e361d8224cd606e760f. 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/PLUM72200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73665de86314a9f12a30a93f402279320815d662988eac5bd88fb408507a116. 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/PLF241705282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440924d4d9b43b1a62d1c787c3eda88690d05467d4f793ab6ad8d2bc992c3d2e. 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/PLF242211687.