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 0x23eca44bef1c474cb74da33aa1519c82daafef748f5cd201f5a3f229b30958ed. 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/3a9be556-0c11-4f3d-aa0d-ec614832dff1.json and https://artists.proofprofile.net/proofs/artist/3a9be556-0c11-4f3d-aa0d-ec614832dff1.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 0xa587d6eac283ba0312fb2c037221e9425f7c1a46b1077e61826ba1d4b813056b. 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/DKKN71500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb133fd10ad56f7da47cc23d76722bc54a5e2755b9cf10b1b50b30bb3cebda47. 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/DKKN71500402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f01ff80cb0da17c389d5ddb4fdfc1dacb31f43c21bf88601e6a8ffcbc0e018. 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/DKKN71500404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c867c75abe71daa624b520229e46bae305f3a3af93eecf59a1be930061cd4. 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/DKKN71500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e3f14bb466dc6ce2c7b0322f7c78245b9636e67c51ddc6aae128b4c5e9b45d. 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/DKKN71500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675e4d10f720844c474aeadeb0665d525d00ecafafa008c9bf3be03c32332fce. 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/DKKN71300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123211b0a525554ef4c4f5fe0731652c8ecf7c3fc27e6014b5badd665a78b1de. 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/DKBR70402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc451f1f939812c7e16bba4cb87deec52d6543da0af35c81aad38b239a485ba23. 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/DKBR70402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cbb0bbe16e46286b9da372599350a95a7d6a86f782e706f172aded790c8d6b. 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/DKBR70402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c46827a77c7ee2b329cf563fc6347cf666f5ed839961fda4f32284645eea6. 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/DKBR70402009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffdba5f2bd1160aded5a60e374b0a32f0ff881107d4506516cc73d362fa24e1. 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/DKBR70402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36132b64c36e53b4733bc990fb70460a09e896889732e7823e8995b6bbbe1396. 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/DKBR70402011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e13550136f8869235a7b3423a1807123c5d7a20a38fe14427ef59b2bc202fb. 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/DKBR70402013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf58ea36f85156d8d0a4825fb5595caebb569df4b9594148203f7a7446195b7. 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/DKBR70402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0341a8ad5c5bbe76592da7e4fce08bdf857c19c4a37e750d78d571d3cbd98425. 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/DKBR70402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa0d7f2e04e62d1221e4528fef9ed60413762d2330ce48b945ecb37f30bc35f. 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/DKBR70402017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f00a81cea6c25e3c489328544cd4f9f0381fe1c06cc4ce5f40951659b52f3. 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/DKBR70402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a6f3e3880d060ef9202c89b749e5f4b9ec8202f9abf651b3902701afae763. 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/DKBR70402015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c83f2f126e0b0e7eedb52ead2b070ac38aadf760d54707e5afa0924b5e965f. 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/DKBR70402019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaf0900639436ed2bd08b3da46e5d2b5ee9f7f802e246bbe925eaa028718fa6. 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/DKBR70402020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d55dc3793b17b02730d8538184cd5383d38496d31056000116e50cc0ea54546. 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/DKKN71802001.