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 0xa35d295e3ebcf82e92a48cd2cff6ac10dfea6270f89e3411e460d59a04729305. 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/8e5a5c71-7954-4f6e-87c4-f77261aeaece.json and https://artists.proofprofile.net/proofs/artist/8e5a5c71-7954-4f6e-87c4-f77261aeaece.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 0xb8ef91424ed881cce9b9a353ff3873d37027881a6cfc24cb4a58a037ca2b4dad. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTBD2465277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fa6c9db6b4bd69c84a306878fa216d162467354edb7c33fc73c257217c5ca7. 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/QZTBD2465278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7f6e7da2228c6bd84a52fa461920ee648402efd7592293521455691a1f62d6. 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/QZTBD2465280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6070ee872d7d3b9118786a5221fa76d5d31f512b598bd73507e09ba665e31cc. 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/QZTBF2469409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16de84477d59c4e8269f568494601669a3e8511c1ca880ff5f67a82d01d7e452. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTBF2469411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2568352a65df36d129b640d4713e428cd55ea80a4c3d49b263e9d2cb62389c8b. 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/QZWFF2498362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5ed701e5693dcefc2aa065f57000e2d6a4f1099c2be63ccd4fcfebc4c63cc0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWFF2498365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0fe64713154a779fc5adcf5a4aaf8528b21a857289ad943a920225d1858b6a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:50Z), 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/QZWFP2448032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a95e4e3395cd6dc4275911a0321a063f41755ec1bfa7dbdcf4739d9a56329. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:56:58Z), 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/QZWFP2448033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922b5c815113e3e14e451d91db034ea70367fdff5f4316427f01eac04735de22. 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/QZWFP2448034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3ac4389d8bbfc60ad873533da0bb561e33edac8a13c9bc53e1f296f6381f6. 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/QZWFP2448036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ce0cf2192a31b2de66e663b2603b2395e64f3ee14a2c7903391856d752ec84. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZWFP2448037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbf9987efa24917da33a6b1f6411beb39ac72a16dc111dde4f2189166328f77. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T21:21:44Z), 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/QZWFP2448038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c01c3700e966d15d6a2ab0c2e1f1990102470749aaa19475e8cd70a90ef1e9. 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/QZWFP2448039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcf361205ad989f87bdde356d1f2a148a2876867434b099fae56e4dc583346b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:43Z), 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/QZWFP2448040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21851664f1ef11232a32829b045871d904ae40cd1241657149e58526be09bda9. 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/QZWFP2448041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c41634a1d176a5c1d935341cb03baa8e37330113812f304819d5de0cac3a0b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZWFP2448042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85177bbc0e178061523cc8be860ec95f219da67ac7d1412baadb4b11a10b0713. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:24:50Z), 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/QZWFP2448043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c343f6fde86be5e89a4b53cd4eb2f73ad7ea04cf36a62a9e87bf5bc6c20833. 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/QZFYX2581565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d3958d22fac38b231c300823f745bb6005ca21caec64fde4ce8e4c2a63a6c. 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/QZFYX2581566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49405c217c9d6e43e8077c04f9b755ae1ba51ca148666ca0c8ba4ef61be95006. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZFYX2581567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda97695370e0eb4faf6548f80e83f0bc2bbd40bef4f2a484c58f620c13cf2b45. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFYX2581570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b75c09591adf1e71be5a9f541971ac77f0c22ae311be93856e64f91686774. 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/QZES82545587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f53e80c872c1195c517cc19530f613f73ebf3de8d1d01ef8f08a44ea370bad. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:48Z), 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/QZES82545588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b23ccb248e8b24beebeeed7ec3e1a057d31fff5f2a054ba50620d1701cd24cc. 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/QZES82545589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bdb87d672d6552d147b2dfb6e9af6f72a5b063c103e67722acdc10128cbbe7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:25Z), 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/QZTBD2465264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc462b04b4b89279eae76bac0cc28a959cef370a52d2f1c6d9a72607fe9791adf. 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/QZTBD2465265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd4e295855d9c30b244fd82f533ead7cd9513d177bf1505b5617fccbf497c5f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZES82545591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8f59c4df0aaca1832d52026307ec6bbf670274c2e5c79b13d971e7629ddcb6. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZTBD2465262.