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 0xb9299f17f1da625fa2fbc08e9fb729208b6f50670fee972ed2a5fae6813c91e4. 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/5f19ade4-42ce-425b-a50c-2f3f312539ff.json and https://artists.proofprofile.net/proofs/artist/5f19ade4-42ce-425b-a50c-2f3f312539ff.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 0x4f363cfb4d1e2d489ec2f1b870e3ff877c9da164b39500e10258392a1730dee8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRS182056262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c838005417c80f5192182ccfb7179fd569a72b4cee9cac7f5fd821a688bc6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRS182056264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c421238962365be927b48ef375e368378d3384c50e2ca45f996723f474350c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRS182056267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508680beb9461f20ac6a127463ca8eef7a621fa16f430543644b3cd422bd50b. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FRS182056268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c488204bafd864b07abd1abca28502a1e34818bc2d9018c91db270a62f886a. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:11:55Z), 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/FRS182056269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a723809891eaecd9e73146b9a7d785867a8787a3c8b596714d380f34bc60b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRS182056270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85540c50dee85bb31628280aafdb99e397bc0ac82fa0c05512b5069353d20bf0. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FRS182056272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd6ba24cb1d0f0756bd9c51df76260bcb926f12770223f7a071673f213e8f21. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR10S2319991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc9e591fc56f746768103b44aa52ceddfec577a5226652c736fdde275a321a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA082326403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb9fd3d4af25247180cd0e9d1cfa555d0966b18b3a50df11b38bb9ac5decbcd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DGA0L2365425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db768687a06160af7c0dfa1e4ab76bc109c8ce839e2df0fa2766fb4d1458719. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DGA0L2365426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f82e975c98f597b38433ad937dc4ed23a4368e074fbc77f948362f2f592492f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA0L2365427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18835dce2abde74f9a73855ae4a0102662157fe073ba4111c89549243d02333b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0L2365428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bd8881e8fbd391031db25f51e4cb7e2fd6ef3092916e541de9ccf4cfc3e7f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA0L2365429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81210d1c9fce693ba486d8ce3775af876bde116aa0051b2ff3d279e747230fa2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:08Z), 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/DGA0L2365430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac4876729ea2fda2ff0f525cb7de4cd0eff84e167feadbd572e441a0ec62854. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DGA0L2365431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6dcf6f50fbeed88dd35234394c230f01b375254bc8a7fe43368a61ec0b0988. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA0L2365432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab81896e69a31c839a9a436bef33dadf12d6c1fd7d4c8cab9a4b23c5a82bb75. 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/DGA0L2365434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8146075ff4d192e902617530e061ff32ad8760b42d5f1dd5de23c8d10469e1c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T13:00:42Z), 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/FR59R2521008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551fa58e416e6d49b228050d23f30c883d297a65d29edca9df7805d41c8b13d6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:11:37Z), 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/FRX452555098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddce41c125342a4f07efb531be57e7e3985d757e50f7e843a577a9e003f4ce2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:26Z), 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/FRX452555099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bae34508b4271f2324de70b9cb1d5334f5c3d601efa058bd452a72b06bfdc3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX452555100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d075acaaf4cb3142ad6e5e356bf02ce562d9d1bdeb4ba54440f41f2430d201a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX452555101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60df8264200be17f89aaf3e170ca17befd7605294fb03f044fa8f6dbdffcb66. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX452555102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbfec697bf3deee77d054b99eedc2ac142687925a8cb0db63f82260e292ab6d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:59Z), 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/FRX452555103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1752382d4afae25a196dd2063209344bbbf5d8ad7b8e33b11c53a5f0167a2e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:08Z), 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/FRX452555104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a195bca7b6c39337937b658d618c2576105c08d9ce82912864b48b37330f72b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:00:47Z), 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/DGA062587573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121461d4b1666dd0363c36b5ab07d0109412e452e707540a14c77fa11402a169. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:05:49Z), 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/DGA062587574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10296a4283c35800c23d9ac67a1c061ec86d84e42b07bd70cb710de78d5b46d9. 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/DGA062587576.