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 0x6f776c1f2597ad27b5991d63e09b736616c0cc18a5f67dc866ee83dd3d790068. 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/cad979d2-6e24-453b-9665-b6e64446a34e.json and https://artists.proofprofile.net/proofs/artist/cad979d2-6e24-453b-9665-b6e64446a34e.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 0xaec8a69d47d2cdd1f2705dec4faceb6bd9dfeba51540893eba11bcaf8c51799f. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/MXF069400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c8e4e1e1a009a93a0151ae3d4737cd99ec56a627c77d98e61ea1b1c83cbfe2. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:23:49Z), 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/MXF069400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbafb2fc1d45c662d2342fe59f49a0ddb44f74b758720f8cdc1d999c1b38542. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/MXF069400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e2883cb026eedac480df6800060934b7606d28c78b29ec17ea365494febada. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:03Z), 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/MXF069400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf282410e53ec60393315dbcd0bcaa6fa891e6b5d492df71a1a0ffe821e2edfaa. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/MXF069400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd452080ef72711c4cdd8873161c441448d67586322755df9413d87c09b3d6d30. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:22Z), 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/MXF069400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711ea1976d9a767f4181a1b0f1e9a0be9d28e135a6528bf2318a95d607e1e415. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:28Z), 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/MXF069400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010aa2392126c5d70b1aae69e3ba00843cd4edc57bf4b93367f0771856b3c57. 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/USEL19500434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62c7cdc1923bb418c6e5bdc3afceda70ad4f3f31c44a2346906dee2ea23c63. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:42Z), 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/USEL19500435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5f3eddaa4cfa1544a70dc07f584bcdd72c76bcbb4d6cb263e4204b59b206db. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USEL19500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e52acf2545dc2a2933807602a62e22a9d78a4c383b31ba02c6d856f083eb3. 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/USEL19500437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52ab57dc8296b326090931cbbfda8a48fe97cef4fde1f4fd95764787c5046e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USEL19500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1ca3df446343f3f9792d9c1faa3961b2d3a23cbac0729b8398a88f8d364ae7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:56:50Z), 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/USEL19500442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50107ba21c876e94f0d7077c5465200d804ae7c23b9781c1f1c64bed1a44ef0. 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/USEL19500445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a3f35595cc9b135c5299ebf6577dbe662351a3f6df36b83f6945574871b2c. 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/MXUM72200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b797d9397ee2bbc19e98e1814530817018d64460333f8f4ee25cfd7a34e613c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:18Z), 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/MXUM72200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce127ce91a35df855b85b35b07689c0b234079d5cd090b31fd7075e3625f98b. 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/MXUM72200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca118671da3c3a52e8fdf0ef5a72c45f725f904df2606b113f49ed9a975c997e. 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/MXUM72200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae1784d308fc1b2081377aa07adfd738fae7c972de18e026b16b6148f2fd8a. 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/MXUM72200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6960c6a6ce31d02b69b131276691c4a13a0dc292fae223e3790928b16c735a7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXUM72200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d150ca01a6eb3b937d9cae8b21de900d19df50bff6b06e3abb15e15e4afd3d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX3741502183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a77e8f48c52dfa36db56e7191201ced45104279db2369da59a0884b37639679. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:30:30Z), 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/MX3741502176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652dd60122f7636fc6ec7a4cce6cc1d0cfb2ba3d056856a6fc380332b291ac92. 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/MX3741502177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ea4332e184b431163cf03e8e7fa65fc30068909acacdfc2887dc73a0cd643. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:36:50Z), 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/MX3741502178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ad3931c67d61b02c118027676dca7590731e7a2260d996ebcdbb699e3129b6. 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/MX3741502179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a858fe30e64af386ec264426ae3ba4072a90f039907336a9a90c884fa10ffe. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:39:35Z), 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/MX3741502180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2096b09de752f0c59c9b762d70317985120245e49c9dc011520f35349e88db4f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:38Z), 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/MX3741502184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d53e669f0c31575a3f13ef4be0d64cf01fe905dc838b4d2238ccd45607f8a9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/MX3741502186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c4971d28835024e00807c97ecf12e6a6451367404c71f51fee202d65246634. 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/MX3741502187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500074ff214709ead3e38c8a79e585024abdde5b8bd9100dd84ce0122b18a1c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MX3741502188.