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 0x6f0b0925027133e66f2b68b5be17ce1ae61432d90350f64a5480e5664ae16b65. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35f31337-5034-4357-b025-af66461c4bd7.json and https://artists.proofprofile.net/proofs/artist/35f31337-5034-4357-b025-af66461c4bd7.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 0x82926f9a14c7b70a4995330abc61363ef081dfed17e4032c98f82e458b821888. 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/SE6I32400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4519e0b37bd54c728414bd9ff427ab562dcdb941d859956c50d21b5383a1530. 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/DEKF22300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07e50e97273216204353ff9d800093287a6e8b313c8a394012352c079374130. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22101155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa751f2d783fcb61d1537b74c035232824d5a93a1fe6711756d854014deba5e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKF22200151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0732138c5473eb9b7e18b9acba3a3021ed79b9f05abffc1df74b036287ae8d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8e7b6f2d2295dc5cb0c0c0e746eeac435ef7759e719e825e7c9ccaa71d7eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22101294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607bf504c105de118bdbb4ac3f785bd6a8e3a428a7b4c71343a0ff06fd4fe10a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033ba831d6b68da0b9bb3ec45ab1c6a93cfdba19a3a4b028e839e6eeebde720f. 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/DEKF22200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161172b04f85c1a12c6fd61557cd13d6af08c4ed62b2754bfdb85196754d71e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKF22200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3346ed3d4df30f77be27f4b65a30e159cafc4127b090d71313e7776c64a10e. 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/DEKF22200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec406c000e965fee86b586a2b6022f655d276b553ada60cc2d2f1a10f93495c. 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/DEKF22200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b0de7f3c0d88203d13fd29ff353c7d73401b4e4b85c74f341c848dfdd616d5. 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/DEKF22200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9e51f035d7287eeb674b806429f2c0a42ad4e1346473553cf845fd0f258369. 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/DEKF22200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17be6f51c1b1b50670c95b640e5a35127dbb398bcfb0dffb20e099d7aa992683. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20999e00eb5346227479f35b7f640305d47b701260cf625e02cd80ed23f54d4. 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/DEKF22100745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697f748ff1ea6944ef93fede023481d42528d3a66e9ee21669a0b8c8383bbad5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKF22100930.