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 0x48d48bfff118498494c6ccee7d79f6747e03f042575734d9905699fc252e0693. 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/feffb32e-c90c-4857-adca-99decf5b90d8.json and https://artists.proofprofile.net/proofs/artist/feffb32e-c90c-4857-adca-99decf5b90d8.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 0x21b4c854414901130b27532b679e794d604a9f07000343c3d77dc840f33aef59. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DKE6N2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181ca9feb7dfcc69c4c3b5b9130f732c8befdc3a9ddb1fd516a1fbda470a89e0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:30:13Z), 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/DKE6N2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d964d93ad1967464e93b54b1862662d6c6cb904aafbc30c3576ebfbbbdf5d97. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DKE6N2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d334a5033f436d57ad24e54f794b75487611f9b4badb986f6de2055b25af38. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/DKE6N2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c73ca360d2ddbb40e7d76278d1ab8d55ffc811bad07e17d02fbe2a34996e45. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DK4V62400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2582334617f19c261d0ae6362a4ebb35ba735bff08651ba395594d6a0d6f3fe. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DKE6N2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cbc28e417b0bf3d5832ac1ebf11c33a21c7c5eb1b64db60ddd2b3d20cc0d67. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DKE6N2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9485626e7b7db684de9c35c676db1277f4b85f23657fcdafa0ec0f29d26ac20b. 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/ITG272500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52222130d4c13beeedc26f5869d1e2ca9f28a755088820bfa81bfea252a47ef4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITG272500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52222130d4c13beeedc26f5869d1e2ca9f28a755088820bfa81bfea252a47ef4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ITG272500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c8e6ff542b6708a873c5f556a2ab31caf38cbdfe5e7ee43de8caaa185c3886. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ITG272500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9485626e7b7db684de9c35c676db1277f4b85f23657fcdafa0ec0f29d26ac20b. 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/ITG272500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55685aaca6002f16de50c4cadcc253e89076673f32cb207c4debb1c8fff446e5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:52:31Z), 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/ITG272500482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9485626e7b7db684de9c35c676db1277f4b85f23657fcdafa0ec0f29d26ac20b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITG272500483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435d125e2e10e37cfa57ff4a976fad638f122b20ecb260f6bbeee1012c643624. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITG272500484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fbb1c281acaa1f1394496e72c9b6123011885ede3d61f778cc5615475d90b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ITG272500485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c8e6ff542b6708a873c5f556a2ab31caf38cbdfe5e7ee43de8caaa185c3886. 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/ITG272500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3a5b497ee67bc490b4bb59fa9ef68c4877155ab2408d72aec4a56eed03d2d7. 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/ITG272500487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52222130d4c13beeedc26f5869d1e2ca9f28a755088820bfa81bfea252a47ef4. 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/ITG272500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f10f7d88ab9f39f74a7a85ee915daf3975efb95ba80d0f0bab8097d476cbf8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITG272500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7e713d17ae5e5a221bd97955188dd5481d43f85e44d68cd70e1db799b5729d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITG272500491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dc0cc6fba74e3d8c39900c5fe5493334af6b30ae11c936429022e3983e3c46. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITG272500492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f5c35cd1e6eb343a1f5f18b399ebd6fdc381c629c49525371f59053814623. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITG272500493.