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 0x7d30ca7f69fbd0959c969116530f0c8de222cda5e9711d3233725a30fcd03058. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a00ad239-21d1-48bd-a652-08ff830bdc80.json and https://artists.proofprofile.net/proofs/artist/a00ad239-21d1-48bd-a652-08ff830bdc80.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 0x287c0e1f0d451fad5e284a9ddd31af895fb4eb6be0bf58a14abadba7798cfaef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYNS11941351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a3c11c4cd454746243432400046f3ae2fe288961ec60a5e170504edfa9734. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYNS11941352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760ef63a678d3b4645f808b2d096c4cc01ce4fdf6a8276f475523b20a0ce50e9. 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/MYNS11941353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da90eb0e10acf27eca4281d2754b102c8afae650ef4ec65c65c42d6ee2bc08f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYNS11941355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b103939830d222755e9de8abac68dd6298e4adc1149beca9f1f5e66aafe0f28. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/MYNS11941356.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb297f7e5dc90152e56516ae9367ec6b9a6add19df1e7debeb643b359affba474. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/MYNS11941358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68675d16f8fbdff750088a45e0a82cf35381dff6bad3ef7442b55fad17150603. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/MYNS11941361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11eeb3057bfd512085e8ea1ce60b00111d10d41011abab1d7bd6b26887d80eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYNS12345415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c927e1175323a82c4fb258b70683667c3c3c7b97ec694a92f91f16f7cd6251. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MYNS12345416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd00c19d76953387df0b468da6875dc494359e18d5f9a72303bcd2c19df5992. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYNS11839210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd06b9fb61358bea516730a3968b6d77cf58e536deed5359eca9999a9ddfc24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYNS11839212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3e717754f065cdc1de664d749610c9f81d03bc1aad1de3340d436e1219bc58. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:45:44Z), 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/MYNS11839214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd84b1e06065e3ded163d98ea1ce2370f36bff24d987978232ffb60ed2f8107d. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/MYNS11839217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba522073606df63216c06118213f8df62060e9b118e78ea3af9ab92a718736da. 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/MYNS11941265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760e83c9c38736d128f08bff5a96a831564d6fdb8b738e12ff6e67458df355c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MYNS11941270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ac873fb49acfb24de61c3bc6bacc6fbeea552f72003022b946bf74e7292ad. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MYNS11941266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d18ee81810506571d3441ef127d02b3c14948f423d749d56249d3599e86da6. 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/MYNS11941295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4c4ef8e66f33bf6c1f80f21cb66bf1a0a53efcab5e098ffab5f590ae15dc54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYNS11941298.