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 0xdf3a6dcc9ea18a33eecbad4b30d42cfdc34b9e73b44e41292c1d2e0615a9de6f. 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/82e44dc0-fc8d-4ef3-9ade-080219691c92.json and https://artists.proofprofile.net/proofs/artist/82e44dc0-fc8d-4ef3-9ade-080219691c92.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 0x4c95e9914b98350793fe3c491b188294d9275dffcba58c2753d9828fba3ebc2b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:47Z), 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/QZWFU2504811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3765e7f1a80ea1a80147414c07a508148edebf65b0b6086fad63dc7e66975302. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFU2506908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5881c705589798801d67a4b228ea4f59d156d9d190d0151565ec9ab0fa9138c1. 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/QZWFU2506919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6d7d043bea6bd189ad915dad4810ab3b9b731621e2d6c9762886a5900ca108. 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/QZWFU2506905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea691490f1cd1de5b953695cafa101716af45b303259f562f7beed7e1d61952b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFU2506911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc6ff9d1952ade1c8d9e3bec0c5ddc17c20989604e14f4d5f2f3e353c0eb9ba. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:21:39Z), 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/QT3F22531883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a9d9c4ab27a56a88d87a7116f63f1329600184867fe01b89256cd720baf40. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QT3F22531877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749451bb100fe44750df72db1599fdc4ad0b15bb79cd8fe2c1ede34db40fd07. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F22531879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c586151be35d5f3f3460859d7609a00fc9574a8d53fc6cac34a68a97defcd8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT3F22531880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8796012143737b2c187f35b25ff1ec981bdc95617fac1fcf9698bf21a64c4239. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:56Z), 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/QT3F22529417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4622625d5536be6789442163ad0e18461b1d521a95825cd91f668b8ebe951fad. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F32549701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e1eab9a3700526455d6a11cfb9844e0df0114485d27bb3d093db284030c94d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F32547768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061f12715f26c6a4ba8d468177e5fba114f62962ba3bab072db560c2650077b0. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3F32549699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0645bf5307a9828e28f8acc49c98eddcb83695c53167a322f80d06a4b2cb8b20. 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/QT3F32549703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738d6832fbc06541cb87d2cf70afe55d5bb94a9298e2a4af42a962587e570e73. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3F32549705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8072be522e0a0a4ca70c70500e5313a0df721c31fbbeb491e8036c67f4c57327. 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/QT3FE2549922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8579df06ce7bc8dcb9121612e6c2b468127f4391fc48e9a9310f147c5d9128. 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/QT3FD2528338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fb7a1893cf93f70e87e794a706f8b512aaced0a7b73b8854c98a8fa85eedb3. 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/QT3FD2526581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aaaafa4dd9ab81e4d9bd96e2531eaaf88bfd6bdb0a53b50d786f6eb4892c76. 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/QT3FD2528332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c081a525b87805557407bb1f1a95a9dc21f48fa1c3eb466d272ac40e4fea966. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:42:50Z), 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/QT3FD2528337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca6d5a899947036174a5d8c2848f8c8ca36b9c0c1cb82e7676f125c9020fa18. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT3FD2528336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3037cecf715bbbd35c6d8997992dfa4abe0d2539281681480985e09d568dfc6c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:16Z), 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/QT3FE2549913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766e4b7d11c610a85c4be775a0fadfeaded96634413128d412f1175a7f021670. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QT3FE2549921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c673daeb514cb5b798f697c60c439e1905c07826d876964d563944ed1ebd1. 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/QT3FE2549924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e51443cde8dbfb007f7bb74cf5bdb1cf8c631e0a447d80842b5524f9354aea0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT3FH2581412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe4f54e3f814914f6724a61018e2cf0b6ea3490001e05a8e50ad0e4f74d78e4. 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/QT3FH2579243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8955a13c0d61a233c4eb33404496bb19550b4d6de5b2ce4a591afb1275d3ec84. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3FH2581406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff324b3f9f73f402721f3c8b9596ea743c75078aba1aa216bf9a78a7eb87c1e3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT6622578821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc158f2e86329f84cdf11d266f762b8de17780304861c7aadcca2218b9d8d7f7c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QT6622578819.