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 0x61a473f06cb86b065d2ad2707a38ea986fa60d76c57ca961c6681feb9c288fe5. 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/4b7c07b1-ca29-4e40-8fa4-21ae1e766cf2.json and https://artists.proofprofile.net/proofs/artist/4b7c07b1-ca29-4e40-8fa4-21ae1e766cf2.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 0x36ace395a8532215978d7d2a6a707b58e6e07215b0666a4af7e6ee9a87398fca. 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/CAQ521608004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cbf66488c9473962ad3979ff7f13733edaf1123961a9179eab982a82f9abce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAQ521608005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca89014f28f550eb5addf5372c3af8ee795ab0f0e29f8059672fe6755313d5e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CAQ521608008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3051416d1693dbb48c308e028a4cdbfd70a279266a7ae13fc1e5de5d9d5a9d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CAIKK1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a4cd32de02ba84e8742b1045a8be1061a99b7c58aba6d8b2b9fb5858a0361d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR5R00910485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9502172b50539bad90ab878ba881d05dc7f93b51a9e93000788575590a271af9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:16Z), 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/FR5R00910535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab05870fe1b1f53ff5b118132b256ed94134dadcaa164ebbdbf3d9e0868079f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:08:49Z), 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/FR96X1983756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b41f8b407ca94ea2d8506a8c1f3a5ee65e48b47e9ea39f47650a83311daae38. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX201922253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea70ffee6a7e2ebbcbe57c6206f740a2f67911aa78ac976a75e5e218badd0a9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FRX201990521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24451772a167bf93bf41fee2586b9b9e9a6c7c686c3e271fdad703d35855dc1d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452127909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356f240477a3e35ff73b8d68c87220380bd42f7d9746033618b7551387838c7b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR59R2113060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24451772a167bf93bf41fee2586b9b9e9a6c7c686c3e271fdad703d35855dc1d. 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/FRX452127909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f28bd99cb69ee082ea00ced0334ff510d4637cdd4ccfeda694ac06183e9ce1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAH682100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac989bca781cdc348821814cd8ba6e38b0f6a6e8fa247b6ce1dc8cea9df5058. 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/CAH682100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356f240477a3e35ff73b8d68c87220380bd42f7d9746033618b7551387838c7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R2113060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b63f6203c8e999beb280a3666b720c3177e36da28dfa55d7ac3da3933fcd22. 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/CAH682200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b241c78d4a143a1666e057a75626a756b24265cca52e28dfd25cfcd0c95888d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAH682200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33613e66e749cb6cb57f931dc1489b5d6ba5762105ca532f2d78baa2cef2fd2. 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/CAH682200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24451772a167bf93bf41fee2586b9b9e9a6c7c686c3e271fdad703d35855dc1d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX452127909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f28bd99cb69ee082ea00ced0334ff510d4637cdd4ccfeda694ac06183e9ce1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAH682100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cccfc8a633d7587b599138f02a300675762f5174aa10cb5f0cf2854ff432e5. 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/CAH682200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac989bca781cdc348821814cd8ba6e38b0f6a6e8fa247b6ce1dc8cea9df5058. 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/CAH682100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f2dc5525fe577acd01b0a4d94440efd53bf5096e4ae553e5379088fbfbe7c. 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/CAH682300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f2dc5525fe577acd01b0a4d94440efd53bf5096e4ae553e5379088fbfbe7c. 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/CAH682300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436807d776b93a24afb439db4b675f34b171ab294240eae41c84d529e5b622d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:46Z), 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/CAH682300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d4a24f8a2bd908b3777c2ae484c97baa324366250c23e9a6d9238781ec1e2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:04Z), 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/CAH682300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4437c83125ade208bf6778f33e86109e429934bb8181fdcc54855573ff9ddf. 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/CAH682400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc9dcade7d3bfb04177e741bc3ddcded9c8f4f3e753df74c2987166c6b432a5. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/CAH682400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bbe498e47161c17901567beeeb259cbdaa34489502e98fd2526ddbb1cb4a95. 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/FR9LT2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bbe498e47161c17901567beeeb259cbdaa34489502e98fd2526ddbb1cb4a95. 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/FR9LT2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b5ef188e446f0141edf36671d8ee11558966a0fa2321ab46edcd358074a26. 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/CA6AG1900019.