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 0x89f4845a5dc64c7481373d4affd6bf6356ff06b4c77cdbc4c620bdf36cac1304. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09ff2958-b8cd-456d-8751-34d486fad1db.json and https://artists.proofprofile.net/proofs/artist/09ff2958-b8cd-456d-8751-34d486fad1db.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 0x3681b3efee9c36aae41e49a61f7b8b31c426612434acacce5fa10371be1ccc3f. 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/FR6V81097952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa258da846163bde832aeaf8a2edec379ff0f356ddc04eb126ec0b12a02313214. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81097953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a10e870f494589cbd0b048e1b3f43813675d3b09cb5b1d14b61a14e56e6a9b. 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/FR6V81097954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26888d9f68cc70582a698735a33b784d0768919ff6c24d521bd5b1f44f12e7bd. 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/FR6V81097956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be96dadb91f6495f7da3a2843ec58d9d3812d043b11d7830693948accc6319a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6V81097957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9cb74018f4239edfc61fc7b26237c02d040ca7fc1fb63c29f1abe373c50d50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR6V81097960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9826a789d070396fb02b0b528b00c8b12024626a22c3940c5fc3d3b52a34c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V81097943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ec7c54e38a813552624dcb8c5a70d1d6be282e81c6ae22c62759c508168fe. 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/FR6V81097945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a1dacc1c68ebff7e8f74da8216fbd9e3688b5ece1116b1fb67cde12c85e9c4. 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/FR6V81097946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed593b5111bd08b1773b1214d20d7ce3cf084d3635faa0032638e6e7cbc4c49. 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/FR6V81097951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ef658a38d1ee50fc470e4be11ca40604347b5d36591276b5c47e2f8fcc8c5b. 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/FR6V81077854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b34442cfdbf25421bfbbbb36c5c3cc09ae2d9abbba0a08aa1ca0c1d9fa3ab. 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/FR6V81077858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac788736b5d2df8a541fe0f24d0309ccb5822f798be377b1792490eaea9359. 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/FR6V81077859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e590ebb832a7c2588c7eb89d45df15f435113c0a1bd92b877df4f13ec34e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V81077847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee96dc3ef578246c76148b78ee5b840a973f8e36be179f87d2e68e85e7bfdc1c. 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/FR6V81077867.