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 0x62687f5a02fb3ebca0043d8e8bbb25b93ff2845f13656468170cf1f25145ffd6. 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/4bb71709-59ec-4cba-8c5c-b7f1e4641d53.json and https://artists.proofprofile.net/proofs/artist/4bb71709-59ec-4cba-8c5c-b7f1e4641d53.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 0x020cef7cfcc983691f4dc80f432935b6ebee760fea8e91fe8c7282c803dd0aab. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/MX4971507889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ecac0a5e228742387968c15b360e7788f2b874a40e64e9c96c2939bd673e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MX4971507892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea616f6defcdd47afa55495cdcabd56f9378722917e787f5fa74896611edfe4. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/MX4971507894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485fb7fbde29f43fdd207fd3f5c943ae8fa9347c4c569e5467f6b53eb61fbf22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MX4971507895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaeabec3d14ce023eb3d6c937742dc1fdc2807504d0a312c5ce0d4ecd079388. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MX4971507896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb15e4b85d625c6a3e8449e84a3e17c006673a2eda45b76e76c0ac6e040d09c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MX4971507897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3780c926626b0e54236524f463ef0f0c0cacf62d38f85534ca9b50d4667e77f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MX4971507899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7df88d74d8de7ada799c5055b74b437bcca7d3c31fd252162566b5993dc843. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MX4971507900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe72456bf4b1384ebc33ee5a442017098ca9d446c8c5d325cd387aed60f174. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MX4971507901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4579ab67418676f092ed4a37edd3b1ca91b2bb381e0af49a66a8e80c0e00d314. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXF369533458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9fd4cc08ce8dccbe8163f339f7a15da180ccc680c54fe3dc5fc82368981db3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF369533461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb46d7ab97619385127063bd51bcf519038e44f11ee646b676e09c41a656ba1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXF369533452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe83703d2ce1714edaa83484be1ec44d166fc29dcddd2497aa3c20c59a0ab92f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXF369533460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64721368f9229c0cbab65fd96cb82085232db72d374882abe2a03456a2a59c01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXF369533459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ec6cf6e5a92db537c80480246e4c2c8a3bf47529a8cb5d9e403e8c0887b78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXF369533456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23214cc11c5425de60453601ad9d4c00070992b3afc46884a53dd551b843ab04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXF369533465.