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 0x363cef7685ef8acb6d2606cfcce784a588657a64269be00363ad53217e1235b8. 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/2aee1422-1799-442b-81ae-2697f2354d17.json and https://artists.proofprofile.net/proofs/artist/2aee1422-1799-442b-81ae-2697f2354d17.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 0xee0809e03905ae9e9234f0477ce0180b72cef1185799a73adf12ddb146c704e4. 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/CA5KR2146824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f88b75242b9f13484c0402f0db1d4260de1e9b41d434f1634c8287b25f09ebb. 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/TCAEK1942690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0414e4ce46f16f488e9a0b001b4346186908a52174f870ba52d7b1f7c66e83b2. 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/CA5KR2146825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95644a00470b8af4d34184c5473a47772c7f13067845562e43308d00b95ffe44. 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/CA5KR2146826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeeec210f0295f8ac18fe014474f07b5b5808b6bb3aa4fdc9b771673b5bae75. 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/CA5KR2146827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc49a5dc9b5c84f33e367389115c396e5f33aadd288a62a3d4a3e341aa3c3dc. 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/CA5KR2146828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4301585926e88d3c5409c6c94afbcb28a6e08d193da6276e5bc1f1c2e45fad3. 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/CA5KR2146829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d90c10bed256f2511acebaecbfad9ed8149d0eb3ec66764331eff07bddd049. 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/CA5KR2142558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb11a9bbe20d294448522c08696d85dc245edf792f65f0ec8ffff77a4eabe0d. 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/CA5KR2146830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ab7fbe32a390a4748e2031c0bb3edbeb2a2ecbe8d1f3d2d90203f823646822. 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/CA5KR2146831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000fdbdd73855d1e4ff0599f8575df23f839c09f6582a51f189775acf4bec1c. 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/CA5KR2146832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3081cbae5b408a8cd4ac1cb6048784750b6de856e6bea22e5f5bd37d4adbefb7. 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/QZA742422191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6c2b41e2b1ea0358bad774ee51dde95dc80e8b6daf2e26153b2c40fe95048. 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/CA5KR2418596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828933d7e0108cbecf1cf73cbf5357f001a9daa43bd9aebcf71e8b5aaa4b3726. 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/QZK6N2371534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0e4c9e12af7300ec45b75ebcb13304ef2124088d1e4a377f4e2ca0b26c0d97. 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/USLD91742691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d90c10bed256f2511acebaecbfad9ed8149d0eb3ec66764331eff07bddd049. 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/CA5KR2142558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f69f7eca798bbe81d275e7e0f63874ef6ea5fc47a4f3afd77e937ce12c0828. 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/QZMEV2031185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3f020d8605a46eed1bc3dbaef323b6d5853dbcffa4ea2e963656104fbb026. 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/QZDTV2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f88b75242b9f13484c0402f0db1d4260de1e9b41d434f1634c8287b25f09ebb. 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/TCAEK1942690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fc45a49a43364aa7192642e035d9ad786007b807826a39a84c3077910e53db. 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/QZDTV1900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95c165cd2a9f31e3d675c7c8bf5189d7a299f330a05dbca5e7b4ec81104a081. 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/QZDTV1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d7f2891ae8d94766cd050f0084e247e8899fd18fb4f889596c31a1b8fa7aae. 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/QZDTV1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5767560dc31e007dd56438d84852c7a1852ef55123141c7f3a23b7561ef73be. 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/CA5KR2070740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5652f7e75291ff297dbe451bda67d4732733f60aacb6f24b2f74834941ed44b4. 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/QZDTV1800239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0243f1ba2dd3752017a9524a9565dbb2320a49fe9bd75b1c293a4b4d012af7. 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/QZDTV1800197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0fdbaf29ce4d746611f17f4d96e39b62e8e8df1bd00484a1a62aae731b3e13. 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/QZDTV1800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0bd57e293716de6dce47bff5ef47ddfb09b0785caece42ff8c60b6bb9e4f73. 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/QZDTV1800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451940f366e4bb93339ebe4b2605a387494189efeefbced3b7408360489b10af. 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/QZPLS2262255.