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 0xf480d406fc34164f6aa22d37cb51ac9a188a4605969eb0befac288b141140a9e. 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/a4949598-0d50-4d36-875a-db6642af54d2.json and https://artists.proofprofile.net/proofs/artist/a4949598-0d50-4d36-875a-db6642af54d2.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 0x14b6c123d22c123bf9ae0eb78520b3e64764c4ab1dfd042399b7c619a6e20fe0. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/AEA2W2344332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4889c40c8c6cf995729db810e08681ef225725a7ddbcf1c7d2c2fbc333e7dd4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T09:08:04Z), 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/AEA2W2344335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3411810a3a30afacc1bdf45847b6edb01551687c3c311cc64cbb1eafeac07153. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AEA2W2344341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4a2638ed7a0f2c2534bc59899c2d8f6202ac367d15844ba97bbe82ec82436c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2321496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d53a0ceae896127d2230085ded244f1119fa034ee5a5e2a6d7165feb7b370. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2321497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06442389e6ab792863cd66f3bd19557085a781b98dc74dedb749f3beecd288. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2321500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4021f17c876384bb62a561306eaea79d84cae4a881a7cb4fa78a9474a75ce43d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2321507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668df212328bdf3ef33ab53e9ea83ac134fe24f146970ef7bd9ef970843597f2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d77438980bd1774f79a80009e708b000b358904893321bacade1a8d2462b69. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80106275ea14ee9b0b2b5051b3db45c030b1c74eacadfbea668e1b530bba4d1a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6c6eb11eb37673e990a257677b5451a9c8b351c42e7a8cf770941ee43d86ca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2321278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43d61b159c0d9559dc7c51dd77a00ded0c14696617578641d0d5c91804a0006. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:51Z), 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/GBLLT2321283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a59cbcfbaff3942463686c2c7f7c6250915df312ff048d8de144fce745c9489. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2321284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703d89e85ce3c06f80a44f343ebc28c4bb9b84681d3e469ba446dc8e5bdfdf94. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2321549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2277505e824268b7f54d640d2e839858df53e8499db85b08058375301ead7604. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBLLT2321553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bc6e97b3bb56bf74dc7976243318ef45cb1a4d7d81c1c26d6471192f31ff96. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2321561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206266d5775068bd2545d15602fa89b755f98dcd48f223c3e0db556718b2eb04. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2321562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b883d1988ce86c27cb6787df5aa76a282ea398f7c2d4fa06789e7cf3e38b5. 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/GBLLT2321563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed28cd0b789b5cc1a4ae07a2d832183ae73ca6a80cdca8d380dad68c9f94b90. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLLT2321564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4142c43a3d81113819a70aa6f8f88a7be2d11cb56438eb8cc94082fa06d15c. 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/SEYOK2308234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0effacc281dbbfae34614e8e2199f539e58e5e075cdc3ad8104432760cb4e550. 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/SEYOK2308237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfed849e43aed307bd760652c6ce77631e6682f72e713f051a098ef66e7ce92. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2308239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9d254042bb0017cfeff7b22a848eb71429993fdbc0a57e4e685f920641e2b2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/SEYOK2308241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efd0db28b8c5e766c90000eb0838178f5d6799ed42587b70c2d762ffc801e7. 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/SEYOK2308242.