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 0x536a5af3947b46e02d1b0325d7634ef5c13758123607a89e562168e9c15f4fc7. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c713a91e-bf75-449a-bf27-a94128dbb344.json and https://artists.proofprofile.net/proofs/artist/c713a91e-bf75-449a-bf27-a94128dbb344.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 0xee2ebe9d4e138393666ea75c8d882043dbb4c496250bfe3dbaf27bcf4e2dff74. 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/FRZ052100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c95bd37ee5edc89e7b0711abd9bb036043602a94f684def555726ac48718f4. 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/FRZ052000585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e18cf5356ec10da2e107b4cd6f180d988265d3e818ded99f88a01ce7ac205a. 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/FRZ052100631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bbdd7313c9a72812302af01be603702894fe7030a638ab18fa3650e4ae85b4. 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/FRZ052000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380d0a81ca1807a7d4e4a15dfcde4d9d82bcb067f3ac310c46a968277f342f60. 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/FRZ052100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312cd6facb61ff9be7a118b045faddbaa30bbac6d989473ae6682d3d331d5f46. 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/FRZ052100577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcde2a6f74f4fbf4d462ce2a611f272eaa5cecdcac74132f99dabefde112401c. 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/FRZ052100581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92c3564f9f85be011e8c2ed6c1594b464dbf8574350813f33fa7cbd06ccb052. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6541992959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098972365017f30326ded69a9c96917fd103857d2aa04d9734d5e1d565d0161c. 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/FR9W12335317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c5e50e62d1c8a784ff6d7145a3383b1e6fefea8f14d8e26038ed815deca8a. 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/FR9W12325761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3a9a0cd864fa2bbebffbd0447c480d6de272d2d24e17c204de3c9b59c01251. 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/FR9W12315701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3a9a0cd864fa2bbebffbd0447c480d6de272d2d24e17c204de3c9b59c01251. 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/FR9W12315701.
Chanel (Extrait du projet Bendo X Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380d0a81ca1807a7d4e4a15dfcde4d9d82bcb067f3ac310c46a968277f342f60. 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/FRZ052100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bbdd7313c9a72812302af01be603702894fe7030a638ab18fa3650e4ae85b4. 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/FRZ052000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2390463ffdf9aaa30ef698828195d2f196401e33e8e594051a9fb4d3ac7453a6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZDA72178163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25e4e1331df7fad4514aa3e59fce8facbd571914227886e8d645bfdc39f676f. 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/QZDA72178168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee57bb9e8e4cb8f09d15962f33b4dba4be2545d94b24912f8093609edb50c3a. 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/QZDA72178170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ccc994af0e41c31a6a71313c6c5df9abfc3b6f0bdec88977e9bad1c60ed09a. 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/QZDA72178172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a306a8efed07f5414b49b663573644ed55581b369d4cfea617c7fdb66dc590. 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/QZDA72178173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb4abc33b604dee69c12a3ce041c24e485f5e07cb33baa82d89eda4470108f. 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/QZDA72178174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f5fcaf633a6f9c20369504502c0ba7de33a45b3cc945298f9efa498d85ca08. 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/QZPLR2206053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e9d12e24ca9937b4053444f27986c3f5c21193d6ef649d2e7b9036b1a348f6. 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/QZPLR2248364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076b9f4f3c4335c943a4ebe2cc4bbfd0af44e1ed5909add4723fd5f2520f7f04. 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/FR9NG2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe817ed56ccd8fa4937ac5abb214b77a2ff04c4e7c30ce395712ee44f403b08e4. 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/QZHN82128229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9477e1527c0fc7fda71f89c1ae1211501d6b19e2af1533cfb116189f89142ee. 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/FR7HV2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3832938c723e56ceb8e9173e6e50dc0bb05d9354a7f27b9a406348f932d976e. 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/FR7HV2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a3d34c911df75b2343c4eb366836cf3c50dc9ea9b6dced279eb596629c0a5e. 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/FR7HV2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4ac0d45ec15c8fe6a45cf8e1cae731ada420ea1858fa0265f72dd093e8b589. 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/FR7HV2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa716819f6b945d960dc41f945e39ce4fee0334e0556dd5d47c81456ab626234. 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/FR7HV2300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc41c15c9aa1cdcb03fe736fb2d5889b4e9bcc29e3d90ab11a4f85978d8179d6. 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/FR9W12127562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a51c4fbd1d28d5688f2d20e20600ae0b02308b76a9ae2fd57dbbfa7309b5c6. 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/FR9W12127051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d220d60fede44f4ccf352739c8fa9c56a9211972e0e9a8ed9a395df70c0bdcc. 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/FR6P12101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc93869c11dffb1149d4c2840864078b9d2d1589afd6b1a85db1987f105acf8a. 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/FR9W12127573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e75c152951012188e19d23c503bbdf83ed1c1694d5d8f2e808fe4d2211e86b. 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/QZMEN2328229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3784aeb6b96617c4f6dd44fc3db29093e414493a1ad91d66302006418b03373. 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/QZMEN2328233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7293672fbec9f300faefe0bdcfd240f1b7377f84e5b73619f2f6e255081f0d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEN2328236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f088ed04b6231840cd2fbe9cc528dd5f7ebaf1d664dc2ab2a38d60fa10928. 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/FR5R02213342.