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 0x5a8d763afc609a63020875eb556f327d6d64418a2ce0a2e342edcf443789d492. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8e0862f-d042-4d77-834f-3ebe77d1861a.json and https://artists.proofprofile.net/proofs/artist/e8e0862f-d042-4d77-834f-3ebe77d1861a.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 0xf6be32971cbaddedae3306d19156ee2517d9fe06fc34f05bef9f25303a75f3b7. 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/GBARL2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4376ec4040aa73fd9026ba197f7b4d42a0068759e29579f437aabf30c32db3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBX722100653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40be2b76cf403eb89c71e3168d24162809f96b988d3d6f2c9e1b56a866dd25f. 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/GBX722100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6cc1247b02e7b0a76b6bd465819fb989ff5fd622b86249813c6790af3b10b. 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/GBX722100654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2763d41aa9916c5770778f4abf2842960592e846276f017df63d4f24c462dc8. 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/GBX722100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ffd3e7325ada4463877891bff57278449293baf684d9e02c9b7ef32b3a07b0. 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/GBX722100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6478121f248236619ff43cb04016ca6245d962f803af681d063ccbe153dd7. 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/GBX722100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3966a6ac4b7111fbb6a0fc094336ff2282fd7f484a3e6161bacbf79211f08c1. 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/GBX722100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702e1cd006ab0fa60b982d06f5fbe5594bc6860415604d2bafff4330d25b828. 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/GBKPL2035092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671837c9b5a1df9b22a3c97f526269dfbed2e19d35f476e512f7eede3ffc6d13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBMA22053218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10ed1e9033f9c3e82609fa5304acc2684a2d7b45334698cd0fa131025f1aec9. 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/GBX722100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa55482e657b5e3d3bb1e7c4640ca64f79cf4955986bdf9a99aa58df4c428aa5. 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/GB2LD2410254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e0a21f749322fa4727c41d05513de141750795b7d0537665acf11491d5aced. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US38Y2408633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6fd94720923e3a04f68fc4b6cd665258f6e1ac4fdd996f06a318476ee74715. 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/GBBKS2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4628aeef3c81268d365830f9340996d58d424089cb715d4e52f4fa4b98d4fc18. 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/GBBKS2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1216dd654ca2b510a80e66199b7671bb668880327ac37d412b01b6fb2b334. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKS2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1e34c9ef67d1256c5f74b7b88bfe4a4be31ed4a8fce22f24e9ff80f6e20217. 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/GBBKS2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b36a076a6ec612eaba9fe6736d914d45a30c41d0cd4f833a87fd47895200e. 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/GBBKS2300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f071f9bb67156f770a55c0ba278798f1f665dbfad2b0533f15fe5c352e425da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKS2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077a7d739f9993d5c163c1044c1827818a5615aac0801827cf613b161b98e9e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBKS2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f76f9337b7a2e621a95d25aaf9a285468b3def39ef67f9805bf4bdf06d68e. 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/GBBKS2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b36a076a6ec612eaba9fe6736d914d45a30c41d0cd4f833a87fd47895200e. 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/GBBKS2300216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f071f9bb67156f770a55c0ba278798f1f665dbfad2b0533f15fe5c352e425da. 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/GBBKS2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ccff03d2dfbf7aee73ad65946f00e555c7588d860b346c0ce0476dfba63088. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2321601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9859bf327b1229ec59a3d794b61cd814245f52b52b15d5cd63839bee4a06ccc0. 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/FR59R2298485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa7ff924cb81f9abaaf3b05e0748ad7a4feb57a4bf6861d07d3ed3b96234d20. 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/FRS182123561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40be2b76cf403eb89c71e3168d24162809f96b988d3d6f2c9e1b56a866dd25f. 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/GBX722100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671837c9b5a1df9b22a3c97f526269dfbed2e19d35f476e512f7eede3ffc6d13. 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/GBMA22053218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702e1cd006ab0fa60b982d06f5fbe5594bc6860415604d2bafff4330d25b828. 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/GBKPL2035092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814702f8dec7a039956e1f7b1005a20ee1a9826d929d5e268d5edbdc47b22c5. 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/QMFMF2300995.