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 0xfe03ba73aedb85288979fe6ace89e910565c8b0bd53f9de2e56a11f2775ba3c2. 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/04f56191-839c-4fd3-8355-2bee45ad0bbd.json and https://artists.proofprofile.net/proofs/artist/04f56191-839c-4fd3-8355-2bee45ad0bbd.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 0x0577f1205fff1084834e6146857264397e3f8033e60a6a5ee529af93d1f3fc12. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES71G2243696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f193cf916af9a60c1b86b9f861419685323de3ee300cc4fa77fba923c4b7b9a. 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/ES71G2243701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc47f3be2746676d9711a14119fea9c567d4c62a639768d976cbf659b1d484e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:20Z), 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/ES71G2246924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07b08c872b8f7c9f645fb42994dfb369f9e04ac7ac3a662404895961978bfc6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G2246929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b8b48daed51cfeb7a40b7677a8ad61d1acc8b862b785c086c6d45792825580. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G2246931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3ed9d069cff3766540eab479a830a989a2298161fb56cf6af18a00d9a7781a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:11Z), 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/ES71G2246933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e87723c5d6e01d43f967329a636eb501caa2c93553068ee83dccc7ed469d48d. 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/PEIF21702109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cca6fd9b1629f42eb62cb43237dd1b63d9fc2236b22f1a0e5dea62cbcab30dc. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PEIF21702110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b014687dc48a085468b769b323fde11991dd6949387961733d0f833c74e70. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:12Z), 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/PEIF21702124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c5550404f3d333cd3addd137b7b1e17f326090a28792139dfc028046ddb48. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PEIF21702111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b25eb8ace382f85d173d004f6979a6f6795c5442ac8fbf659aa37f9f742f17. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PEIF21702112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d6aec5fd8003fcdebce91cce14e4f73984dfe8f0da333e196ebcdd8d548d7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PEIF21702123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea84078a0c55c7bb28ab140563199e3d58af85692ea151d06f044e521343be8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PEIF21702113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa535f36c3f08b26838f9b24922b63a4bf2dae0cf1f10ba848e03f8e9eddb03ae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:45Z), 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/PEIF21702076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d108f2d5587b210db248f90edfaf08e463e2e48abef9aa086489c41bcd88dd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PEIF21702098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96790c9af701f93f50f8da105914e2c7d37e2d8ec2181eecc0fea6aef459f830. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:11Z), 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/PEIF21702114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a470addae3a7be206d5b38cc1e1e88dc9e3b45ddbfef9a97af48f574daaa525. 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/PEIF21702084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ac9b96454d24f5ac6f867ce65839bb5dafb583f3705920cfa199d026082d13. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PEIF21702115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eb1c88401ecc75f004ccd9676bde4a1888ad490cc95947770e79aa214cdb19. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/PEIF21702118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ff62e14907e9545a6d87c9160d3652b051b092fc0c9a73fa1d5bc2667f32ba. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PEIF21702072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95c266dcee007e564126f5667cc20a019db0a5df761dafc9bb7b9300f8d8d53. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PEIF21702127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca758bc5f2518ea18168f87514783663767e16f75da80cd21dc9e14dee5850e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:18Z), 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/PEIF21702093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd5432b7f47137bd6b3b74b677b3919073837827e1efc18756709584a1ebf3. 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/DENR92296009.