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 0x19df56054fd70728ac5fa16b8b65b352a47b24a58e4d588baae9a99e714a7ba7. 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/a842cd70-5369-4086-8173-8547bcbf144f.json and https://artists.proofprofile.net/proofs/artist/a842cd70-5369-4086-8173-8547bcbf144f.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 0x6a6a7b02a119d243bcc209a7dd52e9b04779371d026bb8d24e1149f31869de79. 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/JPS801958561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2496c9a1fcaa0f29506a65eaa8e1d7326fd6fa8e7d3a4f68ee0197086985f5. 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/JPS801853501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887e89d5c0acd9505119190b55a56bf40644170002273f766e125fb962b8c2f3. 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/JPS801853504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78d086880d1d274d7ca7aceeaa9ec87585de392d8dd2d0917d8c1a1f9c3b61. 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/JPS801853507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d284a8454f2ae5e13c25fdb9c8ffb6807cf3142b2e53ff9ab640b949b63f14. 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/JPS801852283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9e3793d79ade41233b58a0e273dd5b52503864f2de724ac52b4cf0e3344e20. 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/JPS801852285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6ec878db9838f35cc11ab6193b5a775d1c17d76c58b08b0da6f0bdf97eab1. 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/JPS801852286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd72edfab9f97ae41c02d604fb2a8204b191579f3680fed12a296fc8f99b330. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPS801852287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba57f3e52a8b2277a197b12857479924283c01ed8cf83c26b2b222ea46dfd198. 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/JPS801852288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3c4875c75f3171518073cd3f1150a57f974afd1dd3e514cfeddfd8bdc11cf2. 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/JPS801852289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e151b873b24d184ce0b8b0832969a236201860c9265a972658127b645e80489. 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/JPZ921807001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fcfcde7eea74293a8aa73caff9bf895c0b68d25e688832c0c63daaec797449. 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/JPZ921807002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf11ce3a1fecca0d25bd8f2397b2350752badbee4ab8d5593f3f90c1b2d54833. 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/JPZ921807003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec835407dbd4da86d061e3cf7c8a0693b9129841e6104be38676d1f40c81cb. 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/JPZ921807004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14d0d51b743c5f8ea80391ed9a648155d70741e096f69290eec1677a018e0d0. 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/JPZ921807005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0cf2b24dc62e16f8aa8cbec9672ed008635f5401f1c7d8d5cf513bbfee5d87. 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/JPZ921807007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937853fdc4a6359143f0973cd668810268ecfd89350fd4d48ba5f99d7f516352. 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/JPZ921807008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d43ef5ed30e612b01eef9041763b3281de359843609635689fda4bf51508c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPS801963858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59849bc5e6f3e0d4c11e5505ae8dcfcfa0b34af6539eba95639226b4f387fb. 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/JPS801963859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc5398395c7e0686e22ee32c501c166f96e5938909ec2f23b1c0b9b90f62db. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPS801963860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf934ef3835c25ce52763fef7f08ed29fb09f79c72a568b9b59c469baa651599d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS801962418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288d63f8c4abeff701e01b4e9fb4a1d7eab260df24e1fcb5dc261308f0a81cb0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPS801961798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d284a8454f2ae5e13c25fdb9c8ffb6807cf3142b2e53ff9ab640b949b63f14. 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/JPS801852283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d201b13798ea3804fabf7df91780e907a025327ae9923c357c6c459d801bc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPS801839449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e52967cefaf83ff09d5b4b2e0c8a5cac8e961703cd45cbdeffe567d44c313a. 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/JPJ901705470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c703518be2e9f7e538043f052b7794a5f548bb65479f6ff67c8faa5b75c31ba. 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/JPJ901705480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34925916bd7dc83751ba751ebb94e94d6967c18edfdbca079ae5b44a36d4578b. 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/JPJ901705510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d84a6b00ef33aa1f41a7d77b84dfeed6d704d1f9f29f8d4f05a66172533563. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:47Z), 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/JPJ901705460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823c74d4950dcb86d26edd1a3114cf95afc7643505a47d3d2c82b1e0ef8811e2. 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/JPS809911191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e67f9b0b372c9bd1f27bffcf95bfffeef77a56e9004d54d2a251b7d6dbc99. 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/JPS809911192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b1c1761948591d2667f336d3685532d48c528923e17de7fde359f875222bad. 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/JPS809911193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90d9fc9385a9a5482906c638f2d9adc8382ea5816a27dd1d4116ef00580ea95. 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/JPS809911196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb0d506ca942925af0d7a122914c63423b5b0926d974b00cbb297f88e6faafb. 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/JPS801852980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0de50907ab01fa86c58a3ba6deb42e4983aeb3c5662a912653b3f7435c08d0. 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/JPS801852981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01184b4893aa3de7dc3d079c36b4dfc9dd7915504b04f7c55d4f6c09f39e3192. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPS801852982.