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 0x9dc39a08bd6d063bc5372c247c7c7539397259d811c1aef78100761f5721b737. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3f8cb7c-2154-4392-aff1-0316057d6534.json and https://artists.proofprofile.net/proofs/artist/c3f8cb7c-2154-4392-aff1-0316057d6534.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 0xa9f6e094b824a93b7789dcc6ff9341d7c3dffde35e7fcb6d47206d1b45c54fe9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZGWW2046872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d1b4fab315ad5be054b2c1c459f8b1f4d9f7b6f51b21c1a032ad5111870cb. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:03:30Z), 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/QZGWW2046874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0669ae36de82952cbc2ef8326821691f48ab85f14ba73519278ab93ac6d9cff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGWW2046879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e4347d1ec510b880cacfa1f59a60c2221e82675d85b1c749af600d3df0ede9. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZGWW2046897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d930d80c8cdd7a7cba9d56c5e0ab78d8423e2b3209d7cd90a5d2f250996504b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZGWW2059147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62261e9c9e6e82ce146f2a393738b0954c45967331c52a9691d5ab7e60c7ad3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGWW2059154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e0661621e82cb6be92080074e8c03c7a462858cb84e3cf9a1ebbc32155bcce. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:21:08Z), 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/QZGWW2059156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8252cfb1d5eb347aa4ca1f84db04394abbe6cd473ebed6a34a3ff6f441b6f8c. 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/QZGWW2059157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7264c9ba9698e7ed6b5da41d80bf8aee1e9c9a57e6f109f258c6100118bdd3c. 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/QZGWW2059222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0661c6b6b0b7329e7405f7487f6ee6642f7f6cd23c99a1d69b4040c59054f47. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZGWW2059224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7103e8d024ebcfd237f112859a1eea56f40b26c216abf85c1806b9dea70b513. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGWW2059231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e4f0d055d41d72e80aec1080561e4562480f3f7e18592946ac215c252b76b3. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:36Z), 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/QZGWW2059242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4142ff4e6c6f0d5e0975fbd09c71d5570d2b584671f16e4b4513c6883bba3afb. 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/QZGWX2052061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9690a0bb0d23d02610e13f6b2c314d8152ea829810e11e12d2f1546912069. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZGWX2073308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4e96be110d5b23591ed40c5ec99132aa9770714771029db53e7c41b19607b8. 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/QZGWX2117006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88902c20c02b429dd776c5bac14fb2d8be56fe727ab529ea1ed494ad40fea177. 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/QZGWX2116980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb03d0593ab302c57d7582bc35ecb93cfacfef99fc39604dced061831ab11fcc. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:26:16Z), 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/QZGWX2159461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1dd9d3f3df99e74cebd96acab801b1471656619ac67d56a91e6ffec70c4ddc. 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/QZGWX2181036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a264f61532992a8aec2634587dabbc9e6a5e6f83e0a95f708b8be7a2dcc8b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGWX2201899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b4496abc706a61236b2366b39032427272aab51e5a2eef888b86f9ae57d7f8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZGWX2170725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a721362bd65915c2577045967ec4c0685e0d4787da6ac5f938501670dda6ff. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:50:24Z), 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/QZW9L2223257.