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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ea0424fcb8832df6b6e098baf0d81f86cf6eec7982721def1f4056b7688b8. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bb557da-58cd-4a7d-82b1-c8541ef110b8.json and https://artists.proofprofile.net/proofs/artist/4bb557da-58cd-4a7d-82b1-c8541ef110b8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4236bdaa02ccf690162d4785a483d1c3379ea6bb5ecce2cfdf7913e3f07e74c8. 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/TCJPO2190689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c04491d32f55e2c3630071b892c4fb042cfa76cab6af75e2bec447b7a103bc5. 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/TCJPO2190690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53365f6149e0673f4598ee48b8202f08f62bcfc27cbedef5cd599b66044793ff. 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/TCJPO2190691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87212067296b368473c3bb5421c5b82e2b89394a51ca6a26e18161f7fc838044. 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/TCJPK2061018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddf98c442b0afc520a3955a74b0536de05724742b7ecf05c1977970aaeb7221. 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/TCJPK2061021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e5d448bdd3fa63d095467954deb78cc478a2366ec99a0bbb77b02366c4a0c6. 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/TCJPK2061023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06ee7ba182cd8de33e0b2be8d0f3c70a85de3c44c9d8f1bf6b8597e411362d. 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/TCJPK2061025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bdcb802efcfebe4e9226f30c6636c01ec6e02ba85c0b983ca5f03017244413. 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/TCJPK2061036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420c166d698a0b0db2179b0fb9a339a259a498962591551adc769b3a7ce9eca1. 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/CAHQJ2138008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c337dfcdd3d19457c2bc1c9771fba023b05a6a08990cbbc160c4d1abb34a98. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCJPR2262127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4d2cb3c3dab150a8c1c29d349a9a63a080117c2f40623759a63fef023a9a40. 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/TCJPM2079268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31ef718c7b16ee79bbb6d445889ce42e71ce77f0db61461dac5c73beb4eedf9. 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/TCJPM2079271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e280f9f41f12cb26a7c17014f0f0f0521ad16bdb105ef6e64187f1a84cd13. 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/TCJPM2079279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f86ecf50bf98d9ce7fca892ad8a840090db352789613467da1b9b1f55113736. 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/TCJPO2189344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ee7e4ee82bbecf360f4f2f484fd237adb097a8e8199b55c68f018b66ac2052. 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/JPB602202681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1714cae8d926f02472c1d9b0eb67cbc9bddb09cce8f2f97b3023d937a0d6c10f. 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/JPE561911321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd52ef6ce5e30479363e9f6835551a4a63437269462c9f208e64916cdc63c2a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCJPZ2447510.
VOCAMIX -VocaTECH & EDM Selection (Mixed by Shu) [DJ MIX]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fef373b1a5c7b814ccbd4e9c9290ac1a4f811597eb0d3aef4d4a48506c2de6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS532400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bfee2046d0fa60edd540b4660561e335a4bb47293d3ee01fdbc424b45d2707. 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/JPS532400755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6ca221d5dba215ac836b4de0aaeea7a9170497e72efa28d7f14250b2493cfa. 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/JPS532400764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db81670fe30e6c05befa4dbd8fc253094d3c8882f7a40527ff6b249a8019f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPS532400778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21651c7574eee6386c86163563a72db9a516c485e8f9922034ddeb368d175a82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPS532400781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafca575f3bec49f271dba28e89707c005578868a5ea3c65674d9d85a490ecd4f. 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/JPS532400785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8208fd0d58a42ca622849154e1bd3bbfc9a7dcf93030805f7e692f26acb02956. 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/TCAJA2428433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4fc3cde0de397840303fbdd2d547f0316c1e2897619efdfc460e6d05d98198. 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/TCAJA2428551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f7268113b2180866d5efc264ad187e17380696d63f260abb2636fbce1145c7. 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/TCAJA2428563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1d8f4c0c3fc7d1e9afe45ec8509b9d537dd2a6c35fa0b16e8699dd666e3ae3. 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/TCAJA2428638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2a8ec801c9b9a2743da13b13a90cc6de0bb93a0be9981a5f0a38cd95d34d7. 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/TCJPG2576317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6676bee830bca99fcc1014c7e462520d26f5fa460de3b9ed74767a8c5bf2ef. 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/TCJPG2576325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2d5dc98d8924c585693ede99bb35dfbd14411984fba5dd430a18cb8bfa8e79. 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/TCJPG2576331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd223a2cc04ed0e45bd76c81b66e428c8eaaf745aa400c0298d2149a124770293. 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/TCJPG2576338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f9b0813a42e094e4494a2b44fa62fa0497460eff99d0afdd43e3f9227c57eb. 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/TCJPG2576340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8078072f4934ebab06fde2d8e8475ddbdb8f88661eb276651052d97585b41. 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/TCJPG2576346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8733be351c1a0253deed0651706b0fbd24305bb7548c312616714f1ba6935260. 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/TCJPG2576350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0018abb76ef058df0817342178f3a1bfa0f6b94ea8c243d820be767a71738f58. 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/TCJPG2576351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1b76775910d2bd8c5e874f3cb53032d6bff1aece818a48c19166ac56284307. 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/TCJPG2576354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1cda1838d879d11c53b8990a70bccdb03266ef2e7f29e25fd8e53f28308f0. 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/TCJPC2464308.