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 0x594001657ed0ffe7dd0bf9b5157b12117c802c8121af7f1fd8fb50b17e25b0cb. 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/30128823-19c2-4c29-969a-bfecf52948b3.json and https://artists.proofprofile.net/proofs/artist/30128823-19c2-4c29-969a-bfecf52948b3.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 0xe9506d4a9434c28012b43ed11fbbf4b3b4aa6cde2a0e37a56465f719f55e7b58. 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/BRGOA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc49216adf3eb8b2fe26412c60c375b1dbd9f50e4973d72759f22703921e9398. 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/BRGOA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06df01f3723bc4458a9a8f89c5ebca6e2841fc37e067c17bd8c253fd824337e8. 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/BRGOA2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9506d4a9434c28012b43ed11fbbf4b3b4aa6cde2a0e37a56465f719f55e7b58. 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/BRGOA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d412738768b802284eabe2e825d155313881edb7e6b60e08eb4b41b369da9d. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BRGOA2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3934796c420b200e4657221c6eb04ead943ca88364e71d57142bc94effb1891. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRGOA2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1700666f7d4bccaf346b8e55c9d9732e0d9c9f02a16c6f6e515f04a25b551. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/BRGOA2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fbc26ec8bea2f42942cd1c8da8b35aafc4a9d8dc5ab241fd5b309825318ba7. 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/BRGOA2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc59a79eea054b3dad7a7bade57b46a7d318fd80475ca3804b58a98486ff47f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRGOA2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ec08a1717d1b37937142fb1588ea6dc191181ef62783dfb06bfcd761d3c7d1. 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/BRGOA2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c057892819a28f8183cb6126d1e2c788f982b0ee886f9489afcda9fa6ade9. 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/BRGOA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10455cf5f656d8e0f806a7c69b932e466328242f3fbbb5f9864128f090e58a79. 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/BRGOA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe862198333b0d7fbf10b1f249417e74da02abef364babd93d1cd818d5de5294a. 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/BRGOA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3ac7b6d716337cd9cb7676929d820b8a46435a6fea1275619e42781b0c544. 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/BRGOA2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60a2e43dcbdc620aeb77012a49bd742d4bd76efa3b66cd7003ed5dcd4d401f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42095c3eb6d9fd8902b828101f76d67728831f3bb2a3b1a3356290480269e1d1. 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/BRGOA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca3080b227fd8db75127b5195235c25545c3dc88ff927207cf35ae8e0b3f5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61092779e127d2df43ddc15465fad32b202015b34c4fcc6fca60019c602a6d8b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BKW4W2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e0c717d658cde2f7b7381f9cda7d8273748e9c629ad217d03b0a5c6072069. 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/BKW4W2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ad257849d4705d8514bec84ea18461a8248a3d659357e7e1d569c6e48cced3. 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/BR18M2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1fa3362f5da59433fe273f4fb1a9a0ad9bc693b8b6d72844232e19dbbfae78. 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/BXW402200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66389f23dd2c72c4838b8a63787e62257522b4b6013dd055373e291b689fad3. 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/BCDDG2000004.