1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3c2b7efba4d509b8e9905bc90c843804f073dcee34eaeeb3e93ce119e2ddf048. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccdbc5d8-f7fd-42a8-98f5-3720dade0908.json and https://artists.proofprofile.net/proofs/artist/ccdbc5d8-f7fd-42a8-98f5-3720dade0908.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 → block OTSBitcoinBlock must exist at that height 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 0x25ca4d60f04227fe6e88e6003fa389ad8348966b375087e3dec595b19454cbcb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:33Z), 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/QZES92209533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae554f9fc64066219229fe282b42eece056a457c8bf5ae01d96449e65d2e5a33. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES62207699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd408abd2027e268b37875de351be1e76bf1d203e18c16dd80c37a0f703729d. 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/FR9W12317803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c92cb254a33325e387d1490e134cc72880f64e954d668947d18690aab47dd8d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:13Z), 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/FR9W12317804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4af86179a3612a2b689a92ec3fb7120f00451f2d9ae6224b1c3760d91a73f51. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:57Z), 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/FR9W12317805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe15212391b7cff6f660650b81a742b8b97de93c2632d3c45c078f0c73df4144. 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/FR9W12317806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ad4181f450d8b535d01d2a8db035b6ea1d48f298491b11f04d071335b27eed. 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/FR9W12317807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d977e0297fc8f87ac41b14f5dbdcdbfb8de6b430b75084391a8943ca426a1a. 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/FR9W12317808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5622eec24119e274233c8b21202bccbe9ccdeb9a1856f67b8118448af9bab6e5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:03:28Z), 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/FR9W12332010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671e957200fe47d40998599220877b7496c205920bba293153606a3fe2644b73. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:31Z), 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/FR9W12332011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85dbe469923cd3d89e9b88b0a932f8cc6c73269ad2a4c0a48a2a93d3445ca8. 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/FR9W12332012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb536bcc8e8d196d755305a261ba952e0ba76ab09edd01dd2a1e6b765432677ca. 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/FR9W12332013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e821f913d0f7916d6d63f315df92cad835e4eae76daf46dc4d1e9dfdbef22c. 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/FR9W12332015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b016abb74fc456427865a2ee5f902a32ae4c3fbb7ef24c3c890c5608d2e6a3a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W12332016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4439eb7709d8f7fb2682728a8d80eeddf8498a1309d80f11ecc5832580e5f10. 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/FR9W12332017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeda3c8a3010de5847b7eeb4bf4a81ced51b5027ae69c49572e497cec9568902. 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/FR9W12401867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ab703f5daa626c9ee7e2f8f307a5f996d4f9492c376919c1d63b0aa212bbea. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR9W12417196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7ccd60a8b49348dac54887d21bdd1c8724a58d7e26d1ffb600294b0688b7a. 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/FR9W12417198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0993111386139ff782ae2ad183282352de5001af79bc2a8c689678d3e528a7f7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FR9W12417199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4117e2589ec8660cef0b48ab665af9fbb2b03c6b8e75ccb7b14cbe4c5be7bd74. 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/FR9W12417200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7583759d7121427255f27b81c4a5df61d37ae8d4cabba6b389649576e2c1ee0b. 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/TCAFY2143286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f90e8dc40dcb0a9466b3a26ae9b40be72824a53afe05906a9ddedbd34cbcda. 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/CBAUX2512204.