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 0xb017e4b200a095a17c5ded4bd9b65467c87e063716915331cab30bf1fd9f5793. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/305a86df-4752-4aa1-a80a-08d029edd6be.json and https://artists.proofprofile.net/proofs/artist/305a86df-4752-4aa1-a80a-08d029edd6be.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 0xd22e0be4ee10fe42b2a572036acc8a9117f3d834efc01e1a5371962c2159bb6d. 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/QZWFK2352562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49b5729a611561f09d4d89d6db1472a9410e516c7aef7e7e8f908f5dc1b3c6. 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/QZK6G2383605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24666235c95f633c09fb009ec2d5dbe75c3f66bc4ab429d1bc3cb49d95a60f. 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/QZWFK2352563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27072cdcbf47bfdb40f0dd47c79e05d69ccc98ac82a240df264f1516a3b820c. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZTBE2341263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c8da80d3356efc3d1f69c6740a41cbe9a32aafa64b85f927d97e2185739428. 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/QZWFK2352565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20cbf990876023b385aa2aca95223ec81e08a8b8e39ae5e60866b0cb8c322ce. 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/QZWFK2352566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9388f9acd0e2bf95c277bbe14b2c9e518eab0d2ef39127788eee1b7e04a0f10c. 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/QZWFK2352567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0230d54745c1f12267d28b551155c832b4d68a4019defec1357ccb6eb2e418. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES72441577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27072cdcbf47bfdb40f0dd47c79e05d69ccc98ac82a240df264f1516a3b820c. 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/QZTBE2341263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce83b23ecc7cdcbbd4a9ae9452dd93d889115db14c577f7188c0c8c981c3f5c. 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/QZES52338986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984cce256b86b834726a8f2a54defe6624701222a9119e1bb677f15630a73662. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBB2267996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdf1a2882284d81682e594b71e4014ae6eceb94f6a81d24ff3976634fce9a2e. 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/QZMEN2235879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4baf852270a24ada0d0f7b99cd5234be6d3cac390a963b6253ad8cfafaed124. 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/QZMEN2235878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e42a904a15182865fdf96a8c5f7b9d0899e8a1a494b2a206221151aea89684. 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/QZMEN2234690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2bb6f8a30705e46ed17731a80c303a39f7f0eb5eb994011b2abb8494f794af. 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/QZHNB2212457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d69c200ca3d8ad5d8de547fa8032c90e0095a6fa76381179e03ee3ce4625893. 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/QZWFK2473874.