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 0xd3dc99511d6ee42464ab23de105d7dc965c228e198e6013413f842cb099ba6e7. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c35216de-7082-4751-adbb-c0b940d3db06.json and https://artists.proofprofile.net/proofs/artist/c35216de-7082-4751-adbb-c0b940d3db06.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 0xc2b3567ea4ae917facf49cc2f30d9ce383beb75e0bf7063727977c5024930b98. 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/CA5KR0005576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf079bca1e53126599775010cad1bd81b9a7e5abe1c5716f3856a49c8ac0732ef. 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/CA5KR0005561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fefb31e2b04d9828a4b4054ecbf8bbac0ba8b6837f2d8e826289829c972154. 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/CA5KR0005562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f151d96d3d1fe7602f292c0eed7d191125124310c5fe9305bb977571b677b3e. 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/CA5KR0005574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d2802ca967f337f42a5f897479f7dd77b6cdca01f08631480037fc0be772fb. 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/CA5KR0005577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d7ca2b43b4ffe00d7db70b483c040f7bac47df423f2a6b76a078fa4871a30. 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/CA5KR0005566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe601226cdfa4a2b342df6e6e10fa768c66afcf44c885e87e3d87723c8c6b7d74. 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/CA5KR0005569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a15794e1988f420c4bbc1fb7639bb435e388f7d37f0c37acea546d55aa8a69. 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/CA5KR0005575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b5bd570e979a3d317e2c61a323acf94827bfcea4bbac3b071f60c340d23a7. 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/QZWV32464330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eb2f42e9fea179e3a24192f7195921545d34789995bee681bb3a52661dadb0. 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/QZWV32466650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51edd7d0899ade57ac6f0a6cb41938ab00fa9b11a7f7d8fb14b7e8fba905d860. 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/QZWV32467503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4075c97cf35f233ff996451f466a52acec4ed6a977f1ad77d8b49e1d65f533be. 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/QZWV32467506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eaef754702ba241d7cc5afb09bb885834fe5cacb99a42c4dbc52d3ab842c71. 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/QZWV32467511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0826ff82b15b1475b7e501dc79f16dc3df61e256f10c4f06746833381a2443. 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/QZWV32467515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7419567479322aa47712ece4bdd554e39f2eb5b708f6e453c0b537f18e5fd34c. 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/QZF8N2055181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26155bf39d2bbf1c585b1e4f16172d2fd71cae7a241f793d35eeda80f403d68c. 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/QZF8N2055186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5690eadd5077f0ae9b424dbe51929286e996914879d0452a135317ff80195b. 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/QZF8N2055188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528fd0b6e6e0958bf76fc9f7d84bb46af6c71696e28b163715b7d347c474f388. 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/QZF8N2055192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7eea4d0c683f44fff0cefbb6f7b572c493a01cf8a481ae090525ccfb7cb4a. 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/QZF8N2055194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ece661c400dcab8744cbe0d00a415d14208427182bd165836f144d27464ea0. 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/QZF8N2055208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8fe40e914d4c8b3fc2024949e686e86718b24ecded17b5740791c68e5211c. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZF8N2055212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdbac72270500a8c6a93e1375b6af2d69bb9dc58f9d2d7673e00fc86d2c25b2. 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/QZTRX2123667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd2d30731fc3cbf91040a7ee93e1e594fbb0a87342e73f054b7f4d456652733. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GB7YL2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb72a7b7ce1120c02f6ef99ec207de5808496da998d23f7c1231ab0ce89e386. 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/GB7YL2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fee917de971fe0bd08e9e34c721afb1f33c3062431f264de21f283978f0351a. 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/GBWUL2573525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d7882a0e5c2f9883dd8f17148ef58c27d824b5e6d39cd6a646f36ed0841257. 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/QT3F22434653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd894dda0b6d0bf149c69889703ac978604fb9e44d927f8352c907a7e34883f. 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/CA5KR2493592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35439538dc7a71b3f4bd0410e9d74684abeb2f857fde0ed0e0244c1513f95a19. 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/CA5KR2404751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb3eb02dba5d41b10a565c3603db3a9eba709aad9864a680bb410bf2c6faf98. 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/QZWFG2309282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfcd6f586b264db9403d0d70e8382799750e3a330c29b42847e35d87f709301. 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/USZXT2556507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0611874a4cb615a78b1ed1dc8727102819920f5d3ade344652fa63796ac68. 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/USZXT2556508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510031932dde2e248f1e77febee0aacd768874a391dfc1e8c699ad51a727cb0d. 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/USZXT2556509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30b51f677ccacee4d4a4fad7ae3cab6142ab969dfdc36187ab0a723a3ca515a. 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/USZXT2556510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee415602d786ed7a7b0cf6fb5c4d961f42781b324d2b841258fb908c481374ca. 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/USZXT2556511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ef5bc3c3046d3e3acfe8a1442f83010d95ceb6bedf0b1d3d3214301ec06fd. 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/USZXT2556512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aba8c89103b27a144b96a37f89fc61d3e03c05cc372b0ccfaaca2d9b2feb3d2. 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/USZXT2556513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3355c783ec17a5ea7e78080d327dc22ef76eda9ecd591f94abc0f180aa22b9e. 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/USZXT2556514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae05eea7993b433016167d2594c31f7bf4350dbe3208249af75558a006dde0. 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/USZXT2556515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f948bc1eb47327249f8f2875bc05d2851021ad95195d616d1e8dc9293cd4a28. 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/USZXT2556516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e3edd2a1bab0c2b098e1d6cb1b93eb65f5a499c83faaee0fd38c5561c2486c. 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/USZXT2556517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b215a74f048dde48d6a9d8727e05260f87bf09fc65fd5fd6f548f4b4d1877d. 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/USZXT2556518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c502087473fa31964b53ec34c3a9cfb638a957f6cf02b0ef00ac76c8d64ef0. 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/USZXT2556519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631d97c8ee04475258dd4e1321635eff072c561f6df6a2a497d6b16555faa2cd. 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/USZXT2556520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6674de042fe4f29bfce41e658d29f57e466747e8387a11b58fb45c436ecca020. 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/USZXT2556521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf914f584ba313f23abe5dce124fc66ecc8f59d36046d40c42f8f53d14a39c133. 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/QZWV32411271.