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 0xd33dc491e41299bdc79f74eca11361f2f393b7d936d2d161033799a036459ff6. 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/efda0d3c-109c-4976-a9e0-5e5f712e9163.json and https://artists.proofprofile.net/proofs/artist/efda0d3c-109c-4976-a9e0-5e5f712e9163.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 0x7c2ac7a0545f19ea3f9aca03fdec747570793a49874d90361e6822a034d8277e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMBZ92024362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4b7e25bee7a1798b4bf0ee5e37e46d7fa561ba60e928f73acd4db9e1092952. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMBZ92024366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132d2af5efec9141155253034b484b0bae3447f51fbed58014c177fb70bebd8c. 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/QMBZ92024368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a780ae7ff88756f33ca31882d5b9f8ee0e6f0179c89c0fb9f5df2371c88fa9. 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/QMBZ92024890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947378e8ce2a7e605d53aa337fd0b9208f630fb75b40d57610bf35132987d73. 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/QMBZ92024891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8765c2119a45e1a166e79b100efa96e9da0000b7a210d44d66c2dd17833deb4c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMFMF2016338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde26f8859459cc86ca0801b7ecfe3c44ea0ddf65fe0ae2ab5aabd91be23a1ecd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFMF2016339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef18e8dba01d8398851430d20d0608cdc63b9b8c8585ebec704968014f1122d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMFMF2016341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c5ef4331eded38dca75857fed64b7086a3468a7127111cb536455b55c72fb5. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QMBZ92132833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c18b96c102278792d1e21150aea985df3eca6d98c698edc529e95793b43ad7. 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/QMFME2132647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95357a8fc0a572b5eb54613af6bfea4666046a3beb6d4109fbc1a0889865c072. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QMBZ92132838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb442a0154dd9cc2a5aefdb40ad915872496c8be546e64f84788df02e7f9d136. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:59Z), 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/QM4TW2281064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc013b5255a8ab09b59cf3f624075935150dea903a83b6a4bef2d7ecb01f271. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:26:18Z), 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/QMBZ92292025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d8836063be05eff0518cd4494f5367686919d8df1454afe60e40d3fa971076. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:28:19Z), 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/QM4TW2349848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c84ff1653fd8db8be3de4c641cb14620c5877cb2929c68e7aa546660a5c3f95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM4TW2349856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd22c07ade12c7ceab3841d097eb2e489b3300b7c75ae18ad83147e6c42a8893. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QM4TW2349857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96acd83bada81bc1aa1aea3b748b25a39539ceecc35113577066da0858b00275. 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/QMFMG2333411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135a8904278e7f417c649a86ea91f23fc4bef9b15cf0d3c791939cfaf77f7dc3. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:03:25Z), 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/QMFMG2333412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3b98d7083d908a2a0fdd84f2d3d75870f41eba2f131751b4b8b0d2fcb72323. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QMFMG2333413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0619a701045857b3762948cce187b255c89206e601aff0efccd05bfd44a278d1. 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/QMFMG2333414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2ecf19f8818d293bfa8522f97d83407c394b1efd6e4d02b66f270b4742055c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMFMG2333415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc22cd31d2e882bd2d136f2a3f37d9efac7147eb43a4d77d97cf1babc575dab. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:25:02Z), 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/QMFMG2333416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fb693d9954f47ed5ddd93e65ef24e9207b939e79e6a9a3ffbc82b4ba21ae20. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:56Z), 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/QMFMG2333417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1ccce26bd279912821e816efcc74d86520ee8f839a394a6ce94cd62f6f0087. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:50:44Z), 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/QMFMG2333418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f413cb2e87cc60f6186ef0e1cdae44e399393039aa1819ca9ff80b68233ae5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMG2333419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54579c5d4b2272e0561b12a37f7508040aed9d8da4332efb8f5132db6c9bb19e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMFMG2333420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00762a3635247ed841bbf386dd79a81ac1bad301f5f5e058430d061aad63b54. 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/QMFMG2333421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01475d7435437c1bd905dc7f3618be6d6c84aedebf7b1f6a4b6efb77572648e8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFMG2333422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe288d885e12d4c500b0e9d0b5f84fc9e4414db6cd7010569552788bf5330226. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMFMG2333423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28a4dcaa323d5abb9177455b6c3b9365290c88bb32db80d884acd7837f6d07. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMFMG2333424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46440319b23ec7fc4dd5c884b71a2368a57872277fabacdca5fa371a9dde523b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMFMG2333425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32424d5a9a99859dffa16f68bc439cf233f2394340e46c3f19ece2d04e8dc8aa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMG2333426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5ac013a29d09fb3c827c116d4d08e76e24f1cc7b77f9894fdb33dc95941c0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMFMG2333427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dedacd8a36921c5608b1538a14c95a511e650f596e55219b7cc98a5c3e3f79. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMG2333428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8fe5700cce3031b683c26746eb2ce461b869eb2a58e9c019f392ed9dd96627. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:27Z), 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/QMFMG2333429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa690b92ebdccc4f5bbf89d508452c9306c245143333278da8bce71b1ca0645. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMG2333430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e83de01d05f7fab8af09c3e02b343d0e65cd36ad119f312aa422c6a2cbf0a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMG2333431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7eb6167a7c6fd4dec496848ad3e6c56b81dd8e1c7850a16f399566c7e289edd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMFMG2333432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb838ad5399689bd1062a1df9517c158df3f520c741be9838104785e2383ff961. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:48:06Z), 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/QMFMG2333433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af488cfdb7f72f60d5a866bc2ca949acfd0ef910035036b747c75adb456fd8d. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QMFMG2333434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a695623d6442ddd29f5573f7989ae32e3f91e8a5e0e1a0bbe44e404d6656f. 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/QMFMG2333436.