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 0xb5ccf492f23c4f27058b0c9c8af0442d4d03712847e50485b799d415d19dd237. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81a7f38f-3151-4c20-a684-de8b091a48db.json and https://artists.proofprofile.net/proofs/artist/81a7f38f-3151-4c20-a684-de8b091a48db.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 0x10a7a921a44e8cad7cc5fea49157eeefd2182b962fffd9d2fbb9803af5ad3680. 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/QZEQU2102115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e837df5abb1bc05364be87cfb669f0f46fdc2d4a9772e467f4c0d5a7a918ac5. 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/QZEQU2102117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb343a62329543dce56c419b913b52eb03e90cf0e070e604398b23cea1b04e97. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZEQU2102119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d36e7e89c1dd5586e3b308167dfa7589716495a5442645a98b8ee4c874079a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:26Z), 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/QZEQU2102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a90829c9004b491dcb7ad65a97c6573b84ff529156f088131ecefd451e09716. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZEQU2101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7170614bf8a8bb680e1d4facda148d6ea6de9da3f3ac7f47b9526ccad6054b44. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZEQU2101401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa045df748078ad9b1dbd2af9b1d70aa1a240a8d6ebc1137125fe99d8bdc888. 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/QZEQU2101391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a66b3af5948c248b2efdd5d99bc0a7b5699246f7096ce3fcb890bb14668e0d. 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/QZEQU2101393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6720bda7445f86f958b74ccd40810d69a5199f017324caa860a30dfd2d12412. 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/QZEQU2101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451723d3539a20333c2043df21a8cbb4fcd8c5761178f71deeb6607cb2542067. 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/QZEQU2101413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e7a76da55ba809be61a488d4cdb808279545cf0f802321513f5b4c327934f9. 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/ESA112321921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b7207ed86ab300c243a79b9c0c4941cce381a6dea1cc919e0e62440316c068. 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/ESA112321923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a3ddb3d5e2a9feb189487e26e2397cc49ff361ba4c64886abc06398b207efe. 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/QZEQU2107656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde26cb5a8568969139c103d76c0941ca45070011e07768ceb35809954096d7f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZEQU2107660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ba84d45b2a6d08b2c1d0e54110a78999caa29b2912a62a48474195bb6aa0b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:07Z), 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/QZEQU2133645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16e4f4e5b21632f2862b82d2e98f5db466f95bb29e6be8b19f869f42606c0a7. 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/QZEQU2133647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97eda6dbb4b2c3790946ae4b29fb2d82141c939808151bec266aca56bf8a073. 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/QZEQU2133648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75792cbc8c7ef094346ca63b8d654d9a9505c8fcc6bfb1e18e15e5dcead5c408. 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/QZEQU2133650.