1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xef5b4471eed5569afeaadb7e39ffdf2c1616e8cd4c03a38f52a279446a2898ce. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5274382b-b349-4d7a-a105-bd7d1afb3d47.json and https://artists.proofprofile.net/proofs/artist/5274382b-b349-4d7a-a105-bd7d1afb3d47.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 → block OTSBitcoinBlock must exist at that height 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 0x9bee8e533bf2f872c131900508b9df1b370e7157ed69a330b631d44aed692161. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/INS189612833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faca482a8606572a1b1453a4a550a1a7615963cd4adf52dcd0ce41993c71e11. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INS189612836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be4fec292fa66e70ad88206f1a16d5e3034e496a21fc374296d81376e9dc702. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/INS189612837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54dc5ad40f3c1727ee59728ddcfc66515b0aec019008dfb2b60e36e97ae13b5. 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/ING120902256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5213a15015b7eefba16a635b67b8e0c74db98bf3b95301171ea8fb8ca483ba. 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/IND301300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c617e2df758b95701ec4e98591611b2508f9b06c0446cc8c69624e2bf5023. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:23:54Z), 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/IND301300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48dc5723237bf7eda8bbfa514a45515e08523aa949ffee2f771515bf2558464. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IND301300912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf202118d3d6b0fecca1a125ed00a27f9fd508f56afcc2fdd6a32b3e336e58da. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IND301300547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb49993f693c3a5b7bde7c1930c787bacac36effb773dc35b38a500d3feea1ee. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IND301300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bd6ae3505ceb0c33ebdbabd39b0c81c46bdd2fcc350c12ac0dbb92f7d4dba3. 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/IND301300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6926b6fae29711099e32744ff34ada07eb1b73bc04d5fda6c6be5111c51c0773. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IND301300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991494985d42404bcd4370a93ddf8cc57269243e34f3f436ad4a33729fdc9a88. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IND301300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17344e6412c485c6a0adbce49a003c8993419302beeeb379ef3f50c4fc930af9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:01Z), 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/IND301300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60d0ee03dd291dcc98bcf9874748e0d477aa1c452fa3eb833c831175b76201a. 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/IND301300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800a8a8b6a931afc876a7e9548dcfcee3088aa3ffb794f1cb346da6fb4812b43. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IND301300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd233b1891fcca7c03ad7c97130ecda3d5cb84a9d6f0f6448c3cae6a504edecf. 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/IND301300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40adaa5e7760f999ddb97c86147fe512d5fec94c0a2a79c00e515db563d3db6f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/IND301300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955cc2c21be2e63209568b1154819dcbdc0bbcc5ecd440e153a22c1810bd1fa8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IND301300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92eb91ee91aaedf2e037a62656eb897226e56ec5934096afa3ceb92f9c8f0d3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IND712005768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969b57fe78b1a6fa3019f036c958d66830b3ff56ace9043e7e3ce29201f870a2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IND712005770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051574b8e5c74c65eb79096dbde80d0ea8682f30361e43f137a3da88c672f29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IND712005671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357dbe02f7887046a8417fb9923398aea034d3f59e53cb78400fe822aca7d8d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INH512029136.