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 0x04dd52baed3f03f5bb5354aaa133c6a168fea298790440562a767c61d2914d20. 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/9dbce3f9-acab-4116-9ba6-91950c46349d.json and https://artists.proofprofile.net/proofs/artist/9dbce3f9-acab-4116-9ba6-91950c46349d.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 0xb77c79d2caf0743c66b33a43836061abd948d8058b18b3c4d5a2c34a40f0dc56. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HKG732012285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4877b5ea7a4ca4942849291f72bc3d95229672d8d0981802c4b6e343ddbe38. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DGA082213676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31b49bfb9e86b378d78bd9d9a463e9f8a5a5991f616311994bb70813c0cef84. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/HKG732012281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df2eed737902467ae033c358cd70811a36f686de66a8d1d20bb94dd999de22c. 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/DGA082208448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7199be9bf3dd43b043853c68304197a3129acee73bc053be6ff0ec6ddd13e86. 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/HKG732117509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43167a704e1aa1eb5fd1f540add9a165f4ba0d243a2087b768b818e42dd57d28. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HKG732117510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca0837eacd37a5be4673dba1ed189ab4048ac4df3e71b81454d4ca3fa126d31. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKG732110409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a53c33b2a6932dea946fb64ac7df9773f9683d85b49d7ab810f4601b0f86a. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/HKG732235345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408be6d6d634f271cbf26c83fee20f4527cc5045e2f1c957ad70b0f063f62cf3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/HKG732235346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4fd770d835b00114bbdb11c87757340d0697b8e62c02fb706a0484f9147735. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DGA082208329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191dcce696dee22530701ceb0a163bf4ae1993771cce53069676dbb1ee9774b5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:18:46Z), 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/FRX282437905.
以渺小之名（电视剧《嘘，国王在冬眠》片头主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f82bb3154bd5b8c4dac201999dae645a92fca54ad38968b0e2679eafaa4d1. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/HKG732508049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13314c0c3ab1f2c8ff9b178f9351b48d3226edc5768032e66a473482ea8f9990. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0M2490570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1522005dfbfeff1f675df294bceeb4db33238860d146af48a92f192b64acc6b3. 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/FRX282316296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd255e088dc13880e9f6fdb4b6e1ed172a3fb3e58fb2f3d13289c4dc418de28b. 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/DGA0M2468753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe393a5118e68a792cca8184cf3519b1287616fc2a9baa686b2fe0217bc94aa49. 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/HKG732001976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee4d4d4b9bb5a0baf603423d852269d989ed780e468c39f0ed64bb5a355c345. 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/HKG732420184.