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 0x2f442fa3f8d175553231cc25db4e67d8c4b38d3cd81412b5cdb1de0656e89b4c. 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/0f695243-1131-4588-932e-e2e4e64aa425.json and https://artists.proofprofile.net/proofs/artist/0f695243-1131-4588-932e-e2e4e64aa425.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 0x1052c240605d9239adfea26ea3b36bda03113506b3a4e5cd34305bf8e7d73902. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:52Z), 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/QZHN52239799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf486a42c8d8dbe10955fb442fe6516c330dec539a0c25e53db4df8de65d3b375. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEP2284182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35621ba4db92939d1c4af9d8a8c49c7043575b44059653a53338a06fce264b2a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWR2358735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a15e5831703fd56c13d019999c1e223e7002cc498963d2e6c6ea078907f6a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:41:05Z), 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/CA5KR2366611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20caef9a461b1e17a91bf33f6bedb6096458017e32b9d6d5ee90f292d0f2465. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:18Z), 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/QZPLR2334443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b0ecf22ef74c387cae3f5385abc887a457b78059d8f284970c1e0211606ee3. 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/GB8KE2319933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49d6d8b3deda3f3a87aede7278558eff82c93f1a8542f1c6ad98a1edac921e6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB8KE2319932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f647b8f2adebdc9e68aa6069264f87e3280560d251c58dd37eb4ca6fb1a413e. 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/SE6A92354734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edabccf732a7b4df193ba397163b444bd0f871330b1a624088ac8b47ad82c88. 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/SE6I32490918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33f010a7be411a537ee854dd59583f87332dfc2e5e8357d1190f88a7b5aeb28. 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/GBLV62317181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042f1f42c9a3ed7603905a4864606009a02bd6aad09170e32c75586ea16025fb. 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/UKZGC2402415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd3e5a65d79e273103d907906535816a74f3c1ee761db28c028ca305a42aed1. 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/UKZGC2405158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b9c481222a710564135cc11551745f4e29f4b6e0072ff4dc252f6f85edc6d1. 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/UKZGC2407115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf01c1760a55d5d95a74b18ace8bd3c4e5a7e6ee8a6efd4918aef71f93f1ffbf. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:29Z), 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/UKZGC2409234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d0f5f65ba6116184bb58c0898a92fbd70ebfa2eecaec70f7411a5af535a621. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:11:49Z), 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/QZ5FN2510216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3deb811bcc197801d69b5eba38a982110e99e94a13e8a90d24702f586bc77d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKZGC2502696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e222a592252f25a4202ba26e73504dc11058cfd32151657f1a7127c90dd2f58. 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/QZTB32580493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa870290aadc64c1d4777facc2ade87382fb920a1adee74d7625c363a6f4d66. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB32580494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387d4ce3bfe1f51c225bb3043b3552028c312813c0027bb5be7dbe9d85394f50. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKZGC2506227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee57fba8715caa436228d6d2e30169b70f8d1d913490ac1ed1281d5e3690fa3. 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/UKZGC2506230.