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 0x98ce93cebe109c66a1a7765a8258fa30f0fc921e6b3566856e15e4593cf4525b. 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/01e288ae-ceee-493e-8798-998b163f89e4.json and https://artists.proofprofile.net/proofs/artist/01e288ae-ceee-493e-8798-998b163f89e4.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 0x4fe57630a4f04c0ce6a35ca3ef65dfe82e627128902cac54bb45948b30118f31. 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/QZMWW2322274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eda6dee87cfd46ae56c22940de51270cb837ab9c29efba3207353dc7c5047b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZMWW2322279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e89ae05fea6a7ecf8e119efa0e1515cc273c592df7c6b67bd82e13a0bb8453c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:55:32Z), 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/QZMWW2322280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe57630a4f04c0ce6a35ca3ef65dfe82e627128902cac54bb45948b30118f31. 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/QZMWW2322274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf59355136d37b16ade7cde1eca6f314e5cadd7ca3e0b58f347e7683d20ebf22. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMWW2322276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e89ae05fea6a7ecf8e119efa0e1515cc273c592df7c6b67bd82e13a0bb8453c. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZMWW2322280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b4cdc32b68d7cf3104c46eaa40e7ca288dca4e1904272ad981ad8d646c0b3a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:58:47Z), 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/QZVFR2301782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60fe7e5abea70d8b5cb6d40abfff7b2723261688517ba257b0c4e9231051ba. 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/QZZ4J2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ad92d145474f3d49fb264ad9e358c6c93e48ceae9df9b919d585e22d65b371. 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/QZZ4J2400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34cf90bff26a4c93b1aa34712612d94378afe9c2098204eef51198b0d04fc7d. 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/QZZ4J2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0f0acbdceda635270012bb9d6a9407b9e2af737cafa505a511008bb695dc6e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZZ4J2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db257b932dd5aa567ac8bc7d26af6577f9a7668fabe0e7a5a03fe454bccf571. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ4J2400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea96c6653536d397e28c039376059bb7ee0395233de697cee6c89c5164ebe4d. 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/QZVFR2301780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8344c36c99676f4c55bfcbabdb739737d07464b2c957c75045fd37b0eb5489ab. 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/QZZ4J2400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75a214bc5dceec2e422d24eda67e8dbfbf674fb8c582333f3d2d83233e809a5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZZ4J2400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b36515e3556146a886264e4b68c769c8b52f4585f5573666afdfe49ffda2b92. 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/QZZ4J2400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df4a5fb7f76636f86806ee2eec9b78497d7689f2bbefe243cf5d0c15ab24c61. 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/QZZ4J2400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf170b618e5cb60b924991539b9f5bf88d78b9d7656c9e95c2596ef7ca745637. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ4J2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fe8c2b8e819b70b02d03f1f7022c28849d7eb192140a2ef99107bd3851a55a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZZ4J2400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24af5a6a30f15ae82b711524dff11684566e8f574cef12c33ef3a1e5e4fc23dd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ4J2400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841306f4d2ec9d205db7a04f42c045c906c56c7320b6c340289643d5597f5d2e. 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/QZZ4J2400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a1680745991cd4ee1f65959e3ecaafd7406726b3f7d951484f7209286688ab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ4J2400463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c9504c913b5cf88f342fd92527d36ea1b1583cb1eee9c19cb8b7c6971cc929. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:26Z), 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/QZZ4J2400470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13c6284b1f3a6db6750f8b0b2802e5c91805b9c0d889b8f705214864ab7ea18. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ4J2400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e045cd03b71368e3a4080475513018eb4441dcbcc22bbe3bb751efcb1feeec3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZZ4J2400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5888869b1a96e1a62d62cb00074f8c51465315d99bfe10920b90ea652ea845c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:07Z), 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/QZZ4J2400599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfeddca1f2943ec59d76468c1ad61dce9d8c7d9a2284f0a7068430b86be3aa7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZZ4J2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd6fd43b678f7c6b6b6ef263c252426eefae51d0ba69d3c372e5abadca8067c. 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/QZAKB2384404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c04a636358fffed4103e8e48e306912b0a0e8149a9bb268103f8ca7f101549. 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/CH7812403548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab42b71c35431dd27bf241f929965a783a5dc4e186e0f8a7776c1f59ced4396. 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/CH7812403551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b1808084caa1182ffd228565618ccd23848138452c9ba70a55849a791f7f5d. 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/CH7812373187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e75b262ee0204d200ca7b3b03d0bf92813bf7bc75ff07a12afa3c4b97db4eb6. 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/USANG2499318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ffe938654ee9fc5260a479a102c2aef6aae3511c79eb10f7d2f3c3943a698b. 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/QZJ842400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6f935016755b48b3ff83825125932e02248aa371516c6b9345a90f90ee52a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZZ4J2400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75931e6b0462a338f7fa495d1efbd29d1feae53cfcedccf9ec4b2276b4d9e2b. 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/QZTAW2539824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75931e6b0462a338f7fa495d1efbd29d1feae53cfcedccf9ec4b2276b4d9e2b. 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/QZTAW2539824.