1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x54dab755fc437a96a36ed4e2ba7dedf279e7b0accc426cbcbd92e7d97cc4fe67. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/337bbe15-6f5d-4598-a627-2891c1266e7c.json and https://artists.proofprofile.net/proofs/artist/337bbe15-6f5d-4598-a627-2891c1266e7c.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xb6eb4d6cb3469e85951dda7899168bae57930f723f8af0230fef4a287a2b069a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BR6211300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5843686d2ff516e34f4e8de27d3d7973d043eeb6d2d7b3e870531b441e933727. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:00Z), 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/BR6211300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f5193722d83849f5086ce059ed81010aa3f1d7495aee87973483a5674b727. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BR6211300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe783d58a5c2e5488bff1021490a4d4c27f70705cb72bc084d616056fd6a99540. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BR6211300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f8baf35e8fea5ce8e0781341c356fb9b4a4da259ea05f812c620c8f8c01d94. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BR6211300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49be63139f663bbede3d75fd4cdbb97e07ef38a9f0c5e6e1b26406ca0427a3d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:30Z), 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/BR6211300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4764922d24532c9f0891c3e51d15beec5688ecafc07fee2df1dddf886b1c6ad. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BR6211300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb963b0d36091a0d2adccf730e07cfa6c515b556662dc32af745d667112bcf2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BR6211300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f45dd434a1ec54aea6fb17c91ba977572b7cd782ea3986d95effb21fef6039. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BR6211300212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa50d2fe4b527210c140ce58a0950d7aa5cfb6c4d34025f1df7ba70b4f28a77. 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/BR6211300214.