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 0x428aaaaf09cd842fba2041d9c9ff282325d44e425964873d729b1053d5572643. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52a8f249-5702-414d-849c-727b47e5084a.json and https://artists.proofprofile.net/proofs/artist/52a8f249-5702-414d-849c-727b47e5084a.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 0x58ebc7e1ba14439b799a0a0c00328f25833278559a9c59778b63b253b7ec017c. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/PLF242209266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88853e627de19904e6c0db2164a7bdb17f9b79416385b847f67cfdd503a88664. 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/PLF242209267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c427253fc20685c216e1f9938dae8f152177f42ed48824dcfe96a969c41cd3. 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/PLF242209268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb5d54ba2bf0997c934fdd84549fe2cadb9e8d26039dff35097aad75f0aa905. Chain 2 (Bitcoin): anchored in block 957034 (2026-07-07T11:52:37Z), 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/PLF242209269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201b6f46a0d8e29be892a75b0e026cdcc5696a2f695ad105e36c44ab78a76d8. 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/PLF242209270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15ec2d316dbdb4f68fc036fd960388622393053d00fe4b270314b0c3916f99. 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/PLF242209272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc878adced7fd352ac2ce97be4773a56f306fb640b436ff37b85f5e510fcdda. 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/PLF242208857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e3cdcc5bdb2eedcd87661977da997e1f04d82c32bb90c367190b7caf8629fa. 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/PLF242209255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8c4d49be3b01b09b82a2f58662a092fd4970a3695da437cd13b6539bb780c3. 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/PLF242208922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39fd20c4cd28e9d44eda43eafb5e102820dcf44a140ddb6657ec7052d768486. 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/PLF242209274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4926fb98e459c328111763eeed2e4654c6f7b315a5fadb7918880154c66df05b. 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/PLF242209275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b47df19abb36613f8f82aa6978563515611bcd284786a09e62a86276e697dd. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PLF242209276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e2e9a8871f02cf57bc30fad834c28ad083f96b5d077a45c8da5f52d8e2bd2. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/PLF242209277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3ce87c21c8c018d7f5ee8e1d8268fc580a389918f22c8663c4d32fd4d9c1d7. 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/PL88L2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fee082c884149691957397d2e80c643405d0ff79de4e31698a30007ee000c9f. 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/FRX762128748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c0cf7f55f56e66b14fc7ea6d8c505e59f88c392f27c9b603a34c9180c3dda2. 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/FRX762128750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1132085bb8f92e34640396f46509734012bc0cf93600760509f5062b76dc889b. 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/FRX282106927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e70592aa3d283a5ee1c11275bc70f202678bed9f2d63affbc56afd1a77fd8. 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/FRX202111929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a9fdb40f6215f080d0abc8256a5f5ec2b14d262fa8b47c54df3b3a291408e. 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/FRX762128751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1388c555e979a29daf701b82f46adeb0664fa8e57274a3addd4e503e00a80765. 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/FRX762128754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b8e0c7cc92a9315e5c0370f2055c579b6f07eb2651a2b6f69318678ee8bda1. 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/FRX762125992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9359c1836bad56b6b68cc76932449786ba21dacb7196688bfc735777b6110c. 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/FRX762128755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037cd3fb4eca149b58b831d0f6fb938d52fffa3cb42cc5a1d66a0dd4da6e66b4. 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/FRX762128756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2e7163bf9f2338db7a1b8d5cebcc8c74255e1b647bc58e4654783d0eb226f. 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/FRX762128757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925f33a678021334f999ed7348130eb85c5292ed06646cbbd3ff05a4ae8b41c4. 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/FRX762128758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1703617904d1a14bb022c7de1d9648b2b9397fe155898671795035802946deae. 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/FRX762128760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf048b8a2844dfc29ab6a876c9c51f83ce2a19c5ca9671c270593f0af16c39ce4. 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/FRX282167457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597bfb2a6395ed6db347fff263ee0c85185f5d48ec326ccfe89d3aa53f35a399. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR96X2116754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3953c4351edbf4039482d7768d8555cd38342fb1b79e833e55d02f6dd79ac9a9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRX452142893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db7f67046d0b97e228497d4b8961dd5e00b6d301c1eae1262862889d1cd6ec. 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/FR59R2226713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8e0e64ace893fcc99a9c37719cb832d4e05070109e28f666694452460b5e8c. 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/PLI862100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141a417780b3a43f8d48fdef6e9d778d7fcd78fe523039af5b10096c59a72e2b. 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/PLZ582300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ee007845c1e302dea9a1039c86b4f679f23cbbd1ba68481e5929c3c8000c95. 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/DGA0S2460949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b91090e379db063e604ee4ccc008ca2cea0436aeaf9ada9c4d0c91d4fb00864. 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/FRX452263786.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3138b865c31d4227a44780de70259c9d56e9f2d72f8ff821af966f7b34e6213. 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/PLZ582200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141a417780b3a43f8d48fdef6e9d778d7fcd78fe523039af5b10096c59a72e2b. 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/PLZ582300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99596bd31e3b98d69339965596a35be78edf7d164f44de74de8cecc3be51570d. 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/FR26V2020800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d8725c4ff499e481708ce2c24f32944315418823f03304242a557763d0f310. 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/FR26V2020802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf740ea79acf223ccc985b296bfab8718c4c45d3a2576177e6a045fae5f426b6. 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/FR26V2020809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fac664233dfb7291924bd652710ddb7bf269a6e71de729263622cde55d9a102. 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/FR26V2020813.