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 0x75c09d22fc1f4929f573d0cb590d9bf08a10c52bc4fd9af427ca471df939ec98. 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/a96d30ae-9d2f-4e93-826a-1eaee705f596.json and https://artists.proofprofile.net/proofs/artist/a96d30ae-9d2f-4e93-826a-1eaee705f596.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 0xa9f998d3743951456d0a3c2aa1e709425000bbdaeec1f0cfbac37872ca1163d7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91739194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679bf084ab17107203e33ddce339c958e865e05e64decda8aecd4e4987339737. 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/USUYG1423270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4046a41edeee5b635da14f79f1768591be7d6a950396226019fb2b63034f91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91739198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01be945857f4bcfb844e3eb9003a4f85e92b5caf8a0bb29408d0783e3bf59a8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91739201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d53785014bb5ee1d9f46c4f43afd96057eb4ec9d056c98ce82d290500442ac6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91739202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26c042215739719ada3b82bb3ba98c184fdbac3bee6211a3c0b149947def75. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLD91739204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0e55d9fe2c70358a847b1c753d3bc92e08e71d15cc902c656695fe583246d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1362746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe945ae2fb7629e6bde718adc41f222f4eff840d83a0b79b8c4e7daaf15eabe08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1362749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4972ead0177f21ba2bca007f493c1cfce7992d6545885cfb3eb68e70035e277a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1362751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc5a12a694424d27f1d49a004962e7002d2870291bf411f99573fd2d46dbf7. 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/USUYG1362753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8855a74589a08f8ccb34218ff9c43eef8d6ffea97226bdbc318a02f9ea4ffd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1337294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd3878c33462229d06e37da975ad63ae924f1bfa4e059eed4de1a00d245f7fb. 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/USUYG1337290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c002bc88ba17122180fd67a5121f8fa77d8941cba3bc25a0ce3bc1dec2c11db. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1337292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e44eecfb3c4965fd5d49a65da9614405ee2138234eef96b389c7fae511871e7. 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/USUYG1337289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7631e922aa1609a4277a7b6404d1c5f90574b979c7905bcdeed0fd34f5350463. 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/USUYG1337298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5472feeb52a5552cebfefbfd7c33876d91bae1e8734f4cc86aea352a922c0e5. 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/USUYG1337299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5e9acc2a73e96d5c7a16a24c2f0d5201443a796829c9f88f04ba0b21d5cf78. 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/USUYG1300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd6f0b7125e96ddf1202c1123c835bf9b124a426b63966433c74a882f4688a9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1300750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999bab7e028b06cd7ba0419d0c9b10d112605e03e80cea2e224067d4543d7e89. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1300751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcebecdc725e8b983d01c18a27f0a752f30f55eede3d64704faa9323c5afc34. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US38Y2411727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4ffa45fe236f79a4101b0a6c949ae4a3d094c8055ac3cb21c59224e988a93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US38Y2411731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4c1bdc2dd692b4fe4d7df8b11592f40649f89d6bf6f6b7d0134701e229be90. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US38Y2411732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d6c2ea3fcbbe0ab16ee9951776d6f3290ed481d72b9dd9f90e003acb22fc9e. 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/US38Y2408427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbcfd95354a0c737ba72505aec3062b5a6d82063098aed9aae3737603371421. 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/US38Y2403687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07609aad783e6db14c6c7f9c5ccdb75996b811cc904b5302de209b1ddabb453b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91752798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13613ee2a4e244d4dc9850b8e54f4142377e1a1fd26b8cec55683e0247747d1d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91751369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679bf084ab17107203e33ddce339c958e865e05e64decda8aecd4e4987339737. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1423270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375d1a4b367bc07efa9fb3f2cd7e9b32863bcacbea8b615db0fcf1cf7fb5b99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ5FN2112496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd124e4bc97a0872f18b1cc1205f903c52a74eda403a2ab8ecf0f62c3007eff4d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA052058293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cee779460e0b86046809c793b730eaba32506bb0aff93b574a6c95b1a8a539. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNMX2121757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4628391558bd6dd17781b3889704b2eaa7612af35345b2f0cef03fa7e728bb51. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNMX2121761.