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 0xd0d021dce33e0d2d008da6b80cbe854cc7b594c1d2961af4d5e268fcf4f8d802. 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/6f678c6d-1ecc-4c88-bb8f-f97eeb6a1543.json and https://artists.proofprofile.net/proofs/artist/6f678c6d-1ecc-4c88-bb8f-f97eeb6a1543.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 0x511c56b0b1f573edbcd310e180b741d8f4637208c183c29fdc53b93e957186f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUYG1473205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856cd613013bfba2c2d6efe23b9571598c1b43e2eae96550f4200810d86ad8ee. 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/USUYG1531237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd871de221b0739eb6b508edb8bd51fc99c4a9858bf70947535827be6a27c518. 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/USUYG1531238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555317c9b5922e6350de823050d956ba965f6ab1a76ebfe5217df356f111cedf. 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/USUYG1531239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc387aee6a382283a9a1fd7fb938a4fc463c2d228777ff5b054f518acc9b890bf. 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/USUYG1531240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a540726b1b8f70f04be100d51bc8657c734d18d9aec4aec3fa5d883b44b27. 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/USUYG1531241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd51cf019a2b941ab81717ec4e14cfaab15e8eda4b20335ecb979579053738b. 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/USUYG1531242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b1c9edf32147018a93e416fa4414abc2de1b7b6b9155c93ca66bcc30ade2c0. 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/USUYG1531243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe180b9b235a8873c92edecee1b3c9048f19091272a479838cf133c20add06c11. 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/USUYG1531244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0957fa77bc9cfad8881c79e84258b820cd8488ec193bc01517ed528e576bf8e3. 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/USUYG1523909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12622d34ff082a91b275b6f577e95bfd3244fb3c82fd7529d69b606abdeabfd7. 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/USUYG1523910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe7ff13168372e10121ef0cae78554ea65440be83c9e76322145b0e03b1565. 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/USUYG1523911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c941007c4a85ad15fed9a9cf1e9ec58c0cb9eb025ad278ee473f2f502a29677. 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/USUYG1523912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a9a33c83a2204421f98e2b9746c40b0d094c336b12e357791f5197d13a375f. 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/USUYG1523913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc45e0b14960d23632b453e6aa8d0879a8de0aebb03a58c7d2d9c0b4d6f185. 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/USUYG1523914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867d0f6b7ef5f342ee3cbd8a9487d2a0011345321898f48369bb7bc0e932148. 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/USUYG1523915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7d67db8209d1f45f05bb0e753cf8862c336bd73e36f09be64fae2a6cc63d8e. 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/USUYG1523916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619aee1e4535ab5f184cb414645f5fbb4aa94f713807ed6ab9998166b67d4ed. 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/USUYG1523917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0957fa77bc9cfad8881c79e84258b820cd8488ec193bc01517ed528e576bf8e3. 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/USUYG1523909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12622d34ff082a91b275b6f577e95bfd3244fb3c82fd7529d69b606abdeabfd7. 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/USUYG1523910.