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 0xe9541777d0bda95b5aecea45abce349592ec3e71d858270483247949ba8ccaef. 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/3952643c-44ef-471a-9329-11b562684645.json and https://artists.proofprofile.net/proofs/artist/3952643c-44ef-471a-9329-11b562684645.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 0x602d733bed27097ab7fa7f35d07b910f102c766674984dcc9a57d5dd80dd569b. 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/QZNWR2339799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866e55aa20a5031a56ed4f0ffb734a54d8e459a52aabe045bd0779364069ad98. 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/QZNWR2339800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0f7401206cca3e092b28c166b80279dd2fee5b79048500b9d4fd80e3e208c5. 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/QZNWR2339802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aabc7b8d186cad319b18f11e92c5b735fc37c3f7b8f37218c654000fa27799. 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/QZNWR2339803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f69f02d9dae263b451520bca9fc4cefd68851abbf7c60c41c5685ae5984dd3. 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/QZNWR2339804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e4baf7689a63f1e815d0300f80d451723eec5600e766392bbe62319ea498d1. 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/QZNWR2339805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1508e69eb36ba3583b7e81e60d2b5a57be65951aeb9b4482e0d84ec5e642b5a. 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/QZNWR2339806.
Shakira: BZRP Music Sessions, Vol. 53 - Saxophone Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1baf34034b37f8800b1126c4c696776cd70eebd7f23c973393d2c24af925ca. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZNWR2339801.
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 0x654428541837fa31309e2a064a6bc21c9d0dd461b44cf66d4c288c35b01e0f20. 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/QZRP42282651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7321a79c4b14d41db7173a86f9290b1a3e6dc551a06a373bb5c7adbbc754dc. 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/QZRP42282654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7f2b150f8e0e3a99f75b86c69e849a53e06c61a1f48d0c4157eec47c591ad4. 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/QZRP42282655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e78c159a4f7695a45c10d89b89fb115226d50b7ad8e2d29e78423d81b321160. 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/QZRP42282656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313378462eb5bdf0f1540b4a79006edcc5bad2cd18e97be587d65d667284bfa1. 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/QZRP42282657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a04a71755eaaa7f530bdcaac2783b5303235d4fafb699eaff0618db329d63. 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/QZRP42282658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e506bd51bc768e31e3e61c51357afb7131f469e446e8c88127294e6c100387. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZRP42282650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb8ae75afd1ada951e7fd2be843551d8665679b4bc0e41c4fb053d850018752. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QZRP42282652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd044b2ed2a49ec1fafbbc2ff5c477a9e2320d44f682b4048e49a43a1b82aac5e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZRP42282653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea10db95e21ecf3bf1e2e60f8a0cf23caa3a1b943a1756e55d6c450779fda9. 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/SE6XW2161559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ba17ab631fb03d0a804ed526bb081021de4365eec1ab1aa7bfea8c681811c. 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/SE6XW2161560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025ac40dea963ee3164debf3f70572986aa7e8bb5844074c24d8dd51f65a6f8. 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/SE6XW2161561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f0dc8de9ceb6f73fd41b1acaeaf496fd508f8d3e06adc8d8b671ad84d19996. 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/SE6XW2161562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48fe7205536ecbdde51d5d24740ce3c76b1693d6e73b25d28b6052a08089406. 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/SE6XW2161563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ca0104b40a08e11eb6f45f258980e25020e3c533f75834c739e06029436a6. 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/SE6XW2161564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9c90c9426ec6e6a1049e449b03b9612a72407112217ead7983bcedcaa10a73. 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/SE6XW2161565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a1548d7463fdb25e04a13c048f3efe584b2023d5c262e0dd0232d7f8ee694c. 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/QZTB72302558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a61b0ac5bf35476eeedfa153148a7db735db257ca7f5267373f432e2d838e0. 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/QZMEM2258642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4890c6fa3b2c7071592be618c478eaad8f7f48eb6396b68fbd6b830d0d39dbf5. 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/QZK6Q2234021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1aaa88e1e3fffb6434598ad1fa1d7898b92e035e635680734f318a448c71a. 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/QZHN72242678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8962abaef77687366193be6cd5c7682df32f823f1f50599398257eef5c106cbf. 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/QZHN72242679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758ae5734a4b34630bbf1da13565fa180cd8d0ea573dc2af0202df1adc8eb6cf. 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/QZHN72242680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d305177ac88d3ca4e1a47fef1baff9b28f7dccdb7fb8dc9a0d0e48be67d4461. 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/QZHN72242681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8ef12c48ac6eb0129de9ca25dc3adc3d90a9f1c412302a5b8f8a4a7bcf530. 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/QZHN72242682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6c6ab2dcf83a45dcefc48559c7291ed4fb01fa7bc4ef75d5eeb4c3de077a8a. 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/QZHN72242683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbf52ee936aede40843ccb7aadaed2068b80ef1a18abff41fae250202a4cfa2. 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/QZFZ72228101.