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 0xb1f3d58a41e2f006e4bc8aea4b119112915d7e28aec68cea9a98c1dd7786ef3b. 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/f38e2ebf-ab48-4b03-91a0-5de53df6c8d8.json and https://artists.proofprofile.net/proofs/artist/f38e2ebf-ab48-4b03-91a0-5de53df6c8d8.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 0x8199de4de611cffa24a5039c1a2b294f40485ee9d482c8b9f8d3168502874f7e. 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/UKXN22402973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0176bbe5f7fa176a5d859d64b878e78a2591da6c2540e80d170b90626e923. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKXN22402975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa330d85f343ebca001547db429ae98bab513dcfc21bf92db6ac3ece4269d062a. 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/UKXN22402979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ea132b7d0354e2dd5b8ee587343f2348756f7a0b047ff9075741961d475016. 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/UKXN22402980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9854ff4a8f6947f94130bd00b400d7b49aa8e7809adaf85442a92fe82bd8346d. 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/UKXN22402981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25230f255edca483ba92609b3cc0b266adcfd0a729bb5d1a3fc2f2ef317c1bac. 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/QZNJV2246369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd0bd258f2b34c6d970442cb988189f6d0325141a449feb50dbd7f4885d31a. 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/QZNJV2246372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fe1702b9c30904790a991314463fa9a07bf302641852cb70cf0c8352889658. 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/QZNWS2001247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49d9dea3a0a6b12ba7496f8ea626ce485cd645e0635a7404709e8336f7f96da. 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/QZNWS2001248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b0213da581612398150945f60f0830f740958435260e6ba2a843f97937d863. 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/QZNWS2001250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d2676ada424dab16c5abcaabe3ae4963b9780ce3653fc9b5d6cc8de2d90cb7. 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/QZFZ62027520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6e54d8205107231dfd5a442e74887bf9b32e9b7ed139d44e5c669558f7cf82. 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/TCAEB1945740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d020452815e1ce303227bdfca4fe3c8d6cce4f57bb4888daf2cdbadee019a5. 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/TCAEB1945751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c94caaf9e893672b9200584ed52eac7d764d89bab760cc3420831c4353ae6b3. 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/GBLFP2393701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65a60b1dfd400ee1810a6e86fd75640a1fce103871c3515d323a617db90f678. 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/UKXN22316070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b029c94e0da146edda0c6a86cf4fcd8ba85da40bafc94134ac7a7beb674e9a3. 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/UKXN22316071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519415f3097837289ae75739a40375a6300c6f4ab1a544ca0a45be57b41b4beb. 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/UKXN22316072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfa4c302295d3e9fc829f99d02a49cb9a727aef8a55035829198b33f82905b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP2330194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919167afdc6c793bc510e6a4cb4d7424b00721156a7e747572d8bd2ce8d0b0bc. 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/GX3Q92377830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410eea420c59b67436c67837d7da164145d1805b7cbac7bed72afa3d56e615e9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ42396896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4392fb8450f8c4aeb758672b933b3c2e911498418630cea80d5b06624fb10c14. 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/QZTVM2241099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d210cf1675953f29d9effc54fd4811be603deb0065ec9ca3aee81a3a18688f. 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/QZHZ52185815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c957810a7b658178078dc3346f66e1b42ffbab422a632c1385007a6f0f6c26. 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/SE5BU2169647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa2da86088d7cf5714b5d4f4032cdc4a53cfdabc5b28bd5fd95b03452996353. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6N2016455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad72f3a87937085573ee1358070010344e95dcaccc179756ef150e96c8a25f8f. 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/QZFZ62000824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d908bc57117bbb447089640703c2e46e9969ec0ce7b5147eda195a3f3ba29a. 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/TCAEK1908221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901c9d1ed014279d8f5325b2a1631d7d26bc2321a2a9b09e97e643d22342d1f0. 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/USZXT2351355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577074d20cf7ca963146d8cb977e4606005cf1180970fb92e07aa6b25a8b70e1. 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/USZXT2351365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e46633f3c214924cb60825c401c8ca07f2ce171346c9d8b43c48342c527981f. 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/USZXT2351368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09d46884ebfae62c044b240b842bd176b07b34705006112f6051745f205efb5. 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/QMFMF2300990.