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 0x0e211b7274d09a570ba404db0814acf4fbea0d3c5598f510c84cf2aa596e0868. 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/87eaa48b-8334-4c26-8600-004b94313221.json and https://artists.proofprofile.net/proofs/artist/87eaa48b-8334-4c26-8600-004b94313221.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 0x38a3fa1034b867ef4700a651477d242ace2fcaa0ecc019becc849a8d7ebe15ec. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/CH6542046437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28126616f3c316386f362fded54d69fbc04db83441ce2d340bb5adbffae7cdca. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/CH6542046436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59dfc2fe68ef762aa850b22fc73209b1e5083ae6a40aabb54b583a0f93fb76e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CH6542046435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39d9c22bc0e102f3491da28e234acfaa62572a74b46186f6b6b96131e251e42. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/CH6542046434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4292e89419c0af1524487746075fd5a7a85dd632a3791a9d6e76f4c83f618270. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4733affd358f2488f21ef46fedd575ca8073478922edc71fa7923f4ccd417f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4cace1119cf04548a03ead204c041976e2a41b96af7108fb9a52890fae1fd. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CH6542046431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4afafa01d6d87ca44e3a4e6f00c367f1a496dbfcd15d6e1d50c5caef82d3e6. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8086078bc331ca4e63e085d8b15bc48c75aa563c32cd44dfdc11e7a926b23546. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CH6542046429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41c941a47f8926d7d5245641ead452b7c7aed234580fc3047da6ea56a5f0b8e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2522367ae3fc37f5685a34ac05e45592113b17ce54441588fc926bf1f939c9fd. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33330b88bec30d21af276baf2eb2e4b93271697f62b915d4a3c21f844765ace. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CH6542046426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e7a06bb4a9b251b453ebbee0e329e584b14e2730d620217c6382438532a7a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:50:18Z), 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/CH6542046425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acf026a87d71e0eb1eca820356ce78f9a1ef72af964b087f7538bc4a37d6605. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc016cc1465e044f02b9e024bc79f9c1ec61b43711904012434617534117568. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:38:39Z), 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/CH6542046423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc1ace24f68b4d512db97304c66ed345a1af4c29541bff411cd45e38ab03cd4. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542046422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578c4b333c415e64f466b88327e37b4987124a577ee4bfc4bf14855b0c6dc50b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:41:16Z), 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/CH6542046421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e148cbd39a044a602959d91941c23229027689908dbf58a8d8c980b762ae341. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CH6542046420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8490815631094e7c54d05775f058e41c422a0c5fc746f678e0b3f156ee16b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:42:33Z), 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/CH6542046419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf101b72076c504130c9f4f088167664cbba039637454855ec59efa8ea38274d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:48:19Z), 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/CH6542046418.